From 7e9d16abfe093f144d2fb6ab1ea89e4d04b164c3 Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Thu, 21 May 2020 20:51:52 -0500
Subject: [PATCH 01/95] GitHub Actions

---
 .github/workflows/main.yml | 59 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 59 insertions(+)
 create mode 100644 .github/workflows/main.yml

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
new file mode 100644
index 000000000000..10f558c02465
--- /dev/null
+++ b/.github/workflows/main.yml
@@ -0,0 +1,59 @@
+# This is a basic workflow to help you get started with Actions
+
+name: CI
+
+# Controls when the action will run. Triggers the workflow on push or pull request
+# events but only for the master branch
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+strategy:
+  fail-fast: false
+  matrix:
+    os: [ubuntu-16.04, ubuntu-18.04]
+    task: [r-package]
+
+# A workflow run is made up of one or more jobs that can run sequentially or in parallel
+jobs:
+  # This workflow contains a single job called "build"
+  build:
+    # The type of runner that the job will run on
+    runs-on: ${{ matrix.os }}
+
+    # Steps represent a sequence of tasks that will be executed as part of the job
+    steps:
+      - uses: actions/checkout@v2
+      - name: env_vars
+        run: |
+            test -n $CC  && unset CC
+            test -n $CXX && unset CXX
+            export HOME_DIRECTORY="$HOME"
+            export BUILD_DIRECTORY="$TRAVIS_BUILD_DIR"
+            if [[ $TRAVIS_OS_NAME == "osx" ]]; then
+                export OS_NAME="macos";
+                export COMPILER="gcc";
+                export R_MAC_VERSION=3.6.3;
+            else
+                export OS_NAME="linux";
+                export COMPILER="clang";
+                export R_TRAVIS_LINUX_VERSION=3.6.3-1bionic;
+            fi
+            export CONDA="$HOME/miniconda"
+            export PATH="$CONDA/bin:$PATH"
+            export CONDA_ENV="test-env"
+            export LGB_VER=$(head -n 1 VERSION.txt)
+            export AMDAPPSDK_PATH=$HOME/AMDAPPSDK
+            export LD_LIBRARY_PATH="$AMDAPPSDK_PATH/lib/x86_64:$LD_LIBRARY_PATH"
+            export LD_LIBRARY_PATH="/usr/local/clang/lib:$LD_LIBRARY_PATH"  # fix error "libomp.so: cannot open shared object file: No such file or directory" on Linux with Clang
+            export OPENCL_VENDOR_PATH=$AMDAPPSDK_PATH/etc/OpenCL/vendors
+      - name: setup
+        env:
+          TASK: {{ matrix.task }}
+        run: bash .ci/setup.sh
+      - name: test
+        env:
+          TASK: {{ matrix.task }}
+        run: bash .ci/test.sh

From 4c9d0ccc1f87c7f03d182b431e32702248406ca6 Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Thu, 21 May 2020 20:56:22 -0500
Subject: [PATCH 02/95] ok

---
 .github/workflows/main.yml | 20 +++++++++-----------
 1 file changed, 9 insertions(+), 11 deletions(-)

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 10f558c02465..8ca5f1caa041 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -5,22 +5,20 @@ name: CI
 # Controls when the action will run. Triggers the workflow on push or pull request
 # events but only for the master branch
 on:
-  push:
-    branches: [ master ]
-  pull_request:
-    branches: [ master ]
-
-strategy:
-  fail-fast: false
-  matrix:
-    os: [ubuntu-16.04, ubuntu-18.04]
-    task: [r-package]
+  - push:
+      branches: [ master ]
+  - pull_request:
+      branches: [ master ]
 
 # A workflow run is made up of one or more jobs that can run sequentially or in parallel
 jobs:
   # This workflow contains a single job called "build"
   build:
-    # The type of runner that the job will run on
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-16.04, ubuntu-18.04]
+        task: [r-package]
     runs-on: ${{ matrix.os }}
 
     # Steps represent a sequence of tasks that will be executed as part of the job

From 740d1d95227b51aaa9062a9f95ee747eb122bbca Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Thu, 21 May 2020 20:57:49 -0500
Subject: [PATCH 03/95] fixing on list

---
 .github/workflows/main.yml | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 8ca5f1caa041..10ffcc3efde3 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -5,10 +5,10 @@ name: CI
 # Controls when the action will run. Triggers the workflow on push or pull request
 # events but only for the master branch
 on:
-  - push:
-      branches: [ master ]
-  - pull_request:
-      branches: [ master ]
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
 
 # A workflow run is made up of one or more jobs that can run sequentially or in parallel
 jobs:

From 6b619cce10055dbb9b9205375607fa83e4eb1c2f Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Thu, 21 May 2020 21:01:16 -0500
Subject: [PATCH 04/95] stuff

---
 .github/workflows/main.yml | 11 +++--------
 1 file changed, 3 insertions(+), 8 deletions(-)

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 10ffcc3efde3..f7f7effbbac2 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -4,11 +4,7 @@ name: CI
 
 # Controls when the action will run. Triggers the workflow on push or pull request
 # events but only for the master branch
-on:
-  push:
-    branches: [ master ]
-  pull_request:
-    branches: [ master ]
+on: [push]
 
 # A workflow run is made up of one or more jobs that can run sequentially or in parallel
 jobs:
@@ -18,7 +14,6 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-16.04, ubuntu-18.04]
-        task: [r-package]
     runs-on: ${{ matrix.os }}
 
     # Steps represent a sequence of tasks that will be executed as part of the job
@@ -49,9 +44,9 @@ jobs:
             export OPENCL_VENDOR_PATH=$AMDAPPSDK_PATH/etc/OpenCL/vendors
       - name: setup
         env:
-          TASK: {{ matrix.task }}
+          TASK: r-package
         run: bash .ci/setup.sh
       - name: test
         env:
-          TASK: {{ matrix.task }}
+          TASK: r-package
         run: bash .ci/test.sh

From d83f54d72f78693de42e4ac472d3545829d812b7 Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Thu, 21 May 2020 21:06:01 -0500
Subject: [PATCH 05/95] directories

---
 .github/workflows/main.yml | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index f7f7effbbac2..686d57ad3e4f 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -1,5 +1,7 @@
 # This is a basic workflow to help you get started with Actions
-
+# workflow syntax:
+#    - https://help.github.com/en/actions/reference/workflow-syntax-for-github-actions#jobsjob_idstepsenv
+#    - 
 name: CI
 
 # Controls when the action will run. Triggers the workflow on push or pull request
@@ -24,7 +26,7 @@ jobs:
             test -n $CC  && unset CC
             test -n $CXX && unset CXX
             export HOME_DIRECTORY="$HOME"
-            export BUILD_DIRECTORY="$TRAVIS_BUILD_DIR"
+            export BUILD_DIRECTORY="$GITHUB_WORKSPACE"
             if [[ $TRAVIS_OS_NAME == "osx" ]]; then
                 export OS_NAME="macos";
                 export COMPILER="gcc";

From 2e8be83026b6d8aace04b465002881dad86bf528 Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Thu, 21 May 2020 21:06:48 -0500
Subject: [PATCH 06/95] directories

---
 .github/workflows/main.yml | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 686d57ad3e4f..567a681ded77 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -8,6 +8,9 @@ name: CI
 # events but only for the master branch
 on: [push]
 
+env:
+  GITHUB_ACTIONS: "true"
+
 # A workflow run is made up of one or more jobs that can run sequentially or in parallel
 jobs:
   # This workflow contains a single job called "build"

From 275119e586efbaa2218ae67bd47851cdc699ce78 Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Thu, 21 May 2020 21:09:31 -0500
Subject: [PATCH 07/95] things

---
 .github/workflows/main.yml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 567a681ded77..6a863ad31efa 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -29,6 +29,7 @@ jobs:
             test -n $CC  && unset CC
             test -n $CXX && unset CXX
             export HOME_DIRECTORY="$HOME"
+            echo ${GITHUB_WORKSPACE}
             export BUILD_DIRECTORY="$GITHUB_WORKSPACE"
             if [[ $TRAVIS_OS_NAME == "osx" ]]; then
                 export OS_NAME="macos";

From 61861066cbcb62a78834ae232fdef12f58abaf7f Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Thu, 21 May 2020 21:14:26 -0500
Subject: [PATCH 08/95] env variables

---
 .github/workflows/main.yml | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 6a863ad31efa..1b4752bb3751 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -51,8 +51,10 @@ jobs:
       - name: setup
         env:
           TASK: r-package
+        working-directory: ${BUILD_DIRECTORY}
         run: bash .ci/setup.sh
       - name: test
+        working-directory: ${BUILD_DIRECTORY}
         env:
           TASK: r-package
         run: bash .ci/test.sh

From faf2e8d6b5ac332d12f89021aee7049744587054 Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Thu, 21 May 2020 21:15:30 -0500
Subject: [PATCH 09/95] working dir

---
 .github/workflows/main.yml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 1b4752bb3751..4e09a1914d8b 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -51,10 +51,10 @@ jobs:
       - name: setup
         env:
           TASK: r-package
-        working-directory: ${BUILD_DIRECTORY}
+        working-directory: /home/runner/work/LightGBM/LightGBM
         run: bash .ci/setup.sh
       - name: test
-        working-directory: ${BUILD_DIRECTORY}
+        working-directory: /home/runner/work/LightGBM/LightGBM
         env:
           TASK: r-package
         run: bash .ci/test.sh

From b6423d33f1bc8b51b3c47326c5c043c0856b1a12 Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Thu, 21 May 2020 21:21:08 -0500
Subject: [PATCH 10/95] running a bunch of tasks

---
 .github/workflows/main.yml | 129 ++++++++++++++++++++++---------------
 1 file changed, 78 insertions(+), 51 deletions(-)

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 4e09a1914d8b..59db5bd54543 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -1,60 +1,87 @@
-# This is a basic workflow to help you get started with Actions
-# workflow syntax:
-#    - https://help.github.com/en/actions/reference/workflow-syntax-for-github-actions#jobsjob_idstepsenv
-#    - 
-name: CI
+name: GitHub Actions
 
-# Controls when the action will run. Triggers the workflow on push or pull request
-# events but only for the master branch
 on: [push]
 
-env:
-  GITHUB_ACTIONS: "true"
-
-# A workflow run is made up of one or more jobs that can run sequentially or in parallel
 jobs:
-  # This workflow contains a single job called "build"
-  build:
+  test:
+    name: ${{ matrix.task }} (${{ matrix.os }})
+    runs-on: ${{ matrix.os }}
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-16.04, ubuntu-18.04]
-    runs-on: ${{ matrix.os }}
-
-    # Steps represent a sequence of tasks that will be executed as part of the job
+        task: [regular, sdist, bdist, if-else, pylint, mpi-source, mpi-pip, gpu-source, gpu-pip]
+        os: [ubuntu-latest, macOS-latest, windows-latest]
+        include:
+          - task: regular
+            python_version: 3.6
+          - task: sdist
+            python_version: 2.7
+          - task: mpi-source
+            method: source
+          - task: mpi-pip
+            method: pip
+          - task: gpu-source
+            method: source
+            python_version: 3.5
+          - task: gpu-pip
+            method: pip
+            python_version: 3.6
+        exclude:
+          - os: macOS-latest
+            task: pylint
+          - os: macOS-latest
+            task: gpu-source
+          - os: macOS-latest
+            task: gpu-pip
+          - os: windows-latest
+            task: if-else
+          - os: windows-latest
+            task: pylint
+          - os: windows-latest
+            task: mpi-source
+          - os: windows-latest
+            task: mpi-pip
+          - os: windows-latest
+            task: gpu-source
+          - os: windows-latest
+            task: gpu-pip
     steps:
-      - uses: actions/checkout@v2
-      - name: env_vars
+      - name: Checkout repository
+        uses: actions/checkout@v1
+        with:
+          fetch-depth: 1
+          submodules: true
+      - name: Setup and run tests on Linux and macOS
+        if: matrix.os != 'windows-latest'
+        shell: bash
         run: |
-            test -n $CC  && unset CC
-            test -n $CXX && unset CXX
-            export HOME_DIRECTORY="$HOME"
-            echo ${GITHUB_WORKSPACE}
-            export BUILD_DIRECTORY="$GITHUB_WORKSPACE"
-            if [[ $TRAVIS_OS_NAME == "osx" ]]; then
-                export OS_NAME="macos";
-                export COMPILER="gcc";
-                export R_MAC_VERSION=3.6.3;
-            else
-                export OS_NAME="linux";
-                export COMPILER="clang";
-                export R_TRAVIS_LINUX_VERSION=3.6.3-1bionic;
-            fi
-            export CONDA="$HOME/miniconda"
-            export PATH="$CONDA/bin:$PATH"
-            export CONDA_ENV="test-env"
-            export LGB_VER=$(head -n 1 VERSION.txt)
-            export AMDAPPSDK_PATH=$HOME/AMDAPPSDK
-            export LD_LIBRARY_PATH="$AMDAPPSDK_PATH/lib/x86_64:$LD_LIBRARY_PATH"
-            export LD_LIBRARY_PATH="/usr/local/clang/lib:$LD_LIBRARY_PATH"  # fix error "libomp.so: cannot open shared object file: No such file or directory" on Linux with Clang
-            export OPENCL_VENDOR_PATH=$AMDAPPSDK_PATH/etc/OpenCL/vendors
-      - name: setup
-        env:
-          TASK: r-package
-        working-directory: /home/runner/work/LightGBM/LightGBM
-        run: bash .ci/setup.sh
-      - name: test
-        working-directory: /home/runner/work/LightGBM/LightGBM
-        env:
-          TASK: r-package
-        run: bash .ci/test.sh
+          if [[ "${{ matrix.task }}" == "gpu-source" || "${{ matrix.task }}" == "gpu-pip" ]]; then
+              export TASK="gpu"
+          elif [[ "${{ matrix.task }}" == "mpi-source" || "${{ matrix.task }}" == "mpi-pip" ]]; then
+              export TASK="mpi"
+          fi
+          export METHOD="${{ matrix.method }}"
+          if [ -z ${{ matrix.python_version }} ]; then
+              export PYTHON_VERSION="3.7"
+          else
+              export PYTHON_VERSION=${{ matrix.python_version }}
+          fi
+
+          export HOME_DIRECTORY="$HOME"
+          export BUILD_DIRECTORY="$GITHUB_WORKSPACE"
+          if [[ "${{ matrix.os }}" == "macOS-latest" ]]; then
+              export OS_NAME="macos"
+              export COMPILER="gcc"
+          elif [[ "${{ matrix.os }}" == "ubuntu-latest" ]]; then
+              export OS_NAME="linux"
+              export COMPILER="clang"
+          fi
+          export GITHUB_ACTIONS="true"
+          export CONDA_ENV="test-env"
+          export LGB_VER=$(head -n 1 VERSION.txt)
+          export AMDAPPSDK_PATH=$HOME/AMDAPPSDK
+          export LD_LIBRARY_PATH="$AMDAPPSDK_PATH/lib/x86_64:$LD_LIBRARY_PATH"
+          export OPENCL_VENDOR_PATH=$AMDAPPSDK_PATH/etc/OpenCL/vendors
+
+          $GITHUB_WORKSPACE/.ci/setup.sh
+          $GITHUB_WORKSPACE/.ci/test.sh

From 482ae939088e74e8bf29d7dccab495f52ff78b69 Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Thu, 21 May 2020 21:25:30 -0500
Subject: [PATCH 11/95] more builds

---
 .github/workflows/main.yml | 51 +++-----------------------------------
 1 file changed, 4 insertions(+), 47 deletions(-)

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 59db5bd54543..ddbc68bf5dd2 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -9,42 +9,13 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        task: [regular, sdist, bdist, if-else, pylint, mpi-source, mpi-pip, gpu-source, gpu-pip]
+        task: [lint, r-package]
         os: [ubuntu-latest, macOS-latest, windows-latest]
-        include:
-          - task: regular
-            python_version: 3.6
-          - task: sdist
-            python_version: 2.7
-          - task: mpi-source
-            method: source
-          - task: mpi-pip
-            method: pip
-          - task: gpu-source
-            method: source
-            python_version: 3.5
-          - task: gpu-pip
-            method: pip
-            python_version: 3.6
         exclude:
           - os: macOS-latest
-            task: pylint
-          - os: macOS-latest
-            task: gpu-source
-          - os: macOS-latest
-            task: gpu-pip
-          - os: windows-latest
-            task: if-else
-          - os: windows-latest
-            task: pylint
-          - os: windows-latest
-            task: mpi-source
-          - os: windows-latest
-            task: mpi-pip
+            task: lint
           - os: windows-latest
-            task: gpu-source
-          - os: windows-latest
-            task: gpu-pip
+            task: lint
     steps:
       - name: Checkout repository
         uses: actions/checkout@v1
@@ -55,18 +26,7 @@ jobs:
         if: matrix.os != 'windows-latest'
         shell: bash
         run: |
-          if [[ "${{ matrix.task }}" == "gpu-source" || "${{ matrix.task }}" == "gpu-pip" ]]; then
-              export TASK="gpu"
-          elif [[ "${{ matrix.task }}" == "mpi-source" || "${{ matrix.task }}" == "mpi-pip" ]]; then
-              export TASK="mpi"
-          fi
-          export METHOD="${{ matrix.method }}"
-          if [ -z ${{ matrix.python_version }} ]; then
-              export PYTHON_VERSION="3.7"
-          else
-              export PYTHON_VERSION=${{ matrix.python_version }}
-          fi
-
+          export TASK="{{ matrix.task }}"
           export HOME_DIRECTORY="$HOME"
           export BUILD_DIRECTORY="$GITHUB_WORKSPACE"
           if [[ "${{ matrix.os }}" == "macOS-latest" ]]; then
@@ -79,9 +39,6 @@ jobs:
           export GITHUB_ACTIONS="true"
           export CONDA_ENV="test-env"
           export LGB_VER=$(head -n 1 VERSION.txt)
-          export AMDAPPSDK_PATH=$HOME/AMDAPPSDK
           export LD_LIBRARY_PATH="$AMDAPPSDK_PATH/lib/x86_64:$LD_LIBRARY_PATH"
-          export OPENCL_VENDOR_PATH=$AMDAPPSDK_PATH/etc/OpenCL/vendors
-
           $GITHUB_WORKSPACE/.ci/setup.sh
           $GITHUB_WORKSPACE/.ci/test.sh

From 6f783d8ea956c703b04c60090408987dfb667959 Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Thu, 21 May 2020 21:29:23 -0500
Subject: [PATCH 12/95] PATH

---
 .github/workflows/main.yml | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index ddbc68bf5dd2..2c52c58fe150 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -36,9 +36,12 @@ jobs:
               export OS_NAME="linux"
               export COMPILER="clang"
           fi
+          export CONDA="$HOME/miniconda"
+          export PATH="$CONDA/bin:$PATH"
           export GITHUB_ACTIONS="true"
           export CONDA_ENV="test-env"
           export LGB_VER=$(head -n 1 VERSION.txt)
+          export AMDAPPSDK_PATH=$HOME/AMDAPPSDK
           export LD_LIBRARY_PATH="$AMDAPPSDK_PATH/lib/x86_64:$LD_LIBRARY_PATH"
           $GITHUB_WORKSPACE/.ci/setup.sh
           $GITHUB_WORKSPACE/.ci/test.sh

From 48eb0efd28c91b1727d01a8cc75ef8b552f7c2e1 Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Thu, 21 May 2020 21:36:33 -0500
Subject: [PATCH 13/95] actually use R task

---
 .ci/test.sh                | 4 ++--
 .github/workflows/main.yml | 1 +
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/.ci/test.sh b/.ci/test.sh
index 7c68ca733fe9..b64cc510a505 100755
--- a/.ci/test.sh
+++ b/.ci/test.sh
@@ -13,7 +13,7 @@ source activate $CONDA_ENV
 
 cd $BUILD_DIRECTORY
 
-if [[ $TRAVIS == "true" ]] && [[ $TASK == "check-docs" ]]; then
+if [[ $TASK == "check-docs" ]]; then
     cd $BUILD_DIRECTORY/docs
     conda install -q -y -n $CONDA_ENV -c conda-forge doxygen
     pip install --user -r requirements.txt rstcheck
@@ -40,7 +40,7 @@ if [[ $TRAVIS == "true" ]] && [[ $TASK == "check-docs" ]]; then
     exit 0
 fi
 
-if [[ $TRAVIS == "true" ]] && [[ $TASK == "lint" ]]; then
+if [[ $TASK == "lint" ]]; then
     conda install -q -y -n $CONDA_ENV \
         pycodestyle \
         pydocstyle \
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 2c52c58fe150..7f21466aeb15 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -43,5 +43,6 @@ jobs:
           export LGB_VER=$(head -n 1 VERSION.txt)
           export AMDAPPSDK_PATH=$HOME/AMDAPPSDK
           export LD_LIBRARY_PATH="$AMDAPPSDK_PATH/lib/x86_64:$LD_LIBRARY_PATH"
+          echo "--- TASK: ${TASK}"
           $GITHUB_WORKSPACE/.ci/setup.sh
           $GITHUB_WORKSPACE/.ci/test.sh

From 8bef95c223878beba178337471e0f0144f1366f2 Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Thu, 21 May 2020 21:39:44 -0500
Subject: [PATCH 14/95] TASK

---
 .github/workflows/main.yml | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 7f21466aeb15..f13a833433bd 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -26,7 +26,7 @@ jobs:
         if: matrix.os != 'windows-latest'
         shell: bash
         run: |
-          export TASK="{{ matrix.task }}"
+          export TASK="${{ matrix.task }}"
           export HOME_DIRECTORY="$HOME"
           export BUILD_DIRECTORY="$GITHUB_WORKSPACE"
           if [[ "${{ matrix.os }}" == "macOS-latest" ]]; then
@@ -44,5 +44,10 @@ jobs:
           export AMDAPPSDK_PATH=$HOME/AMDAPPSDK
           export LD_LIBRARY_PATH="$AMDAPPSDK_PATH/lib/x86_64:$LD_LIBRARY_PATH"
           echo "--- TASK: ${TASK}"
-          $GITHUB_WORKSPACE/.ci/setup.sh
-          $GITHUB_WORKSPACE/.ci/test.sh
+        - name: run tests
+          if: matrix.os != 'windows-latest'
+          shell: bash
+          run: |
+
+            $GITHUB_WORKSPACE/.ci/setup.sh
+            $GITHUB_WORKSPACE/.ci/test.sh

From e515ae704e924bbe5865500b04b3336721b1794d Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Thu, 21 May 2020 21:41:16 -0500
Subject: [PATCH 15/95] be right, often

---
 .github/workflows/main.yml | 10 ++--------
 1 file changed, 2 insertions(+), 8 deletions(-)

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index f13a833433bd..3b98ded6eade 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -43,11 +43,5 @@ jobs:
           export LGB_VER=$(head -n 1 VERSION.txt)
           export AMDAPPSDK_PATH=$HOME/AMDAPPSDK
           export LD_LIBRARY_PATH="$AMDAPPSDK_PATH/lib/x86_64:$LD_LIBRARY_PATH"
-          echo "--- TASK: ${TASK}"
-        - name: run tests
-          if: matrix.os != 'windows-latest'
-          shell: bash
-          run: |
-
-            $GITHUB_WORKSPACE/.ci/setup.sh
-            $GITHUB_WORKSPACE/.ci/test.sh
+          $GITHUB_WORKSPACE/.ci/setup.sh
+          $GITHUB_WORKSPACE/.ci/test.sh

From deda7f61276e6d1cd40f12ec864837d3380ee418 Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Thu, 21 May 2020 22:07:30 -0500
Subject: [PATCH 16/95] doing stuff

---
 .ci/test_r_package.sh      | 2 +-
 .github/workflows/main.yml | 1 +
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/.ci/test_r_package.sh b/.ci/test_r_package.sh
index fcd515d23c18..d9377857a518 100755
--- a/.ci/test_r_package.sh
+++ b/.ci/test_r_package.sh
@@ -13,7 +13,7 @@ export PATH="$R_LIB_PATH/R/bin:$PATH"
 #
 # This only needs to get run on Travis because R environment for Linux
 # used by Azure pipelines is set up in https://github.com/guolinke/lightgbm-ci-docker
-if [[ $TRAVIS == "true" ]] && [[ $OS_NAME == "linux" ]]; then
+if [[ $AZURE != "true" ]] && [[ $OS_NAME == "linux" ]]; then
     sudo apt-key adv \
         --keyserver keyserver.ubuntu.com \
         --recv-keys E298A3A825C0D65DFD57CBB651716619E084DAB9
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 3b98ded6eade..f97a2ee57db7 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -38,6 +38,7 @@ jobs:
           fi
           export CONDA="$HOME/miniconda"
           export PATH="$CONDA/bin:$PATH"
+          echo "COONDA: $CONDA"
           export GITHUB_ACTIONS="true"
           export CONDA_ENV="test-env"
           export LGB_VER=$(head -n 1 VERSION.txt)

From 1f00cd26265a8e79f5f6f8471d0771d83b2168c3 Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Thu, 21 May 2020 22:09:46 -0500
Subject: [PATCH 17/95] trying stuff

---
 .github/workflows/main.yml | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index f97a2ee57db7..60712f12b02d 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -38,7 +38,8 @@ jobs:
           fi
           export CONDA="$HOME/miniconda"
           export PATH="$CONDA/bin:$PATH"
-          echo "COONDA: $CONDA"
+          echo "PATH: $PATH"
+          which activate
           export GITHUB_ACTIONS="true"
           export CONDA_ENV="test-env"
           export LGB_VER=$(head -n 1 VERSION.txt)

From da5de22d4685831a510537b1d14f4ce900196deb Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Thu, 21 May 2020 22:13:14 -0500
Subject: [PATCH 18/95] more paths

---
 .github/workflows/main.yml | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 60712f12b02d..dccec6b95e12 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -9,7 +9,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        task: [lint, r-package]
+        task: [lint] # r-package
         os: [ubuntu-latest, macOS-latest, windows-latest]
         exclude:
           - os: macOS-latest
@@ -36,11 +36,9 @@ jobs:
               export OS_NAME="linux"
               export COMPILER="clang"
           fi
+          export GITHUB_ACTIONS="true"
           export CONDA="$HOME/miniconda"
           export PATH="$CONDA/bin:$PATH"
-          echo "PATH: $PATH"
-          which activate
-          export GITHUB_ACTIONS="true"
           export CONDA_ENV="test-env"
           export LGB_VER=$(head -n 1 VERSION.txt)
           export AMDAPPSDK_PATH=$HOME/AMDAPPSDK

From 115bbe16d1a61e5761770c22d9a386fb7ce8ef4e Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Thu, 21 May 2020 22:16:07 -0500
Subject: [PATCH 19/95] conda activate

---
 .ci/test.sh | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/.ci/test.sh b/.ci/test.sh
index b64cc510a505..775df84179a9 100755
--- a/.ci/test.sh
+++ b/.ci/test.sh
@@ -9,7 +9,8 @@ elif [[ $OS_NAME == "linux" ]] && [[ $COMPILER == "clang" ]]; then
 fi
 
 conda create -q -y -n $CONDA_ENV python=$PYTHON_VERSION
-source activate $CONDA_ENV
+#source activate $CONDA_ENV
+conda activate $CONDA_ENV
 
 cd $BUILD_DIRECTORY
 

From 8822deffac62e69d5641dcff37b46d86542741db Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Thu, 21 May 2020 22:19:15 -0500
Subject: [PATCH 20/95] updating PATH

---
 .ci/test.sh | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/.ci/test.sh b/.ci/test.sh
index 775df84179a9..8e9f573f275e 100755
--- a/.ci/test.sh
+++ b/.ci/test.sh
@@ -9,8 +9,7 @@ elif [[ $OS_NAME == "linux" ]] && [[ $COMPILER == "clang" ]]; then
 fi
 
 conda create -q -y -n $CONDA_ENV python=$PYTHON_VERSION
-#source activate $CONDA_ENV
-conda activate $CONDA_ENV
+source ${CONDA}/bin/activate $CONDA_ENV
 
 cd $BUILD_DIRECTORY
 

From d741afcb05a80d96335fdb660e97fd4a752b2b72 Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Thu, 21 May 2020 22:23:10 -0500
Subject: [PATCH 21/95] trying bash

---
 .github/workflows/main.yml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index dccec6b95e12..ed3394815a97 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -43,5 +43,5 @@ jobs:
           export LGB_VER=$(head -n 1 VERSION.txt)
           export AMDAPPSDK_PATH=$HOME/AMDAPPSDK
           export LD_LIBRARY_PATH="$AMDAPPSDK_PATH/lib/x86_64:$LD_LIBRARY_PATH"
-          $GITHUB_WORKSPACE/.ci/setup.sh
-          $GITHUB_WORKSPACE/.ci/test.sh
+          bash $GITHUB_WORKSPACE/.ci/setup.sh
+          bash $GITHUB_WORKSPACE/.ci/test.sh

From 4828392fc9912346994ccbcf639775017cd5d63c Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Thu, 21 May 2020 22:33:05 -0500
Subject: [PATCH 22/95] where the hell is activate

---
 .ci/test.sh                |  2 +-
 .github/workflows/main.yml | 11 +++++++++--
 2 files changed, 10 insertions(+), 3 deletions(-)

diff --git a/.ci/test.sh b/.ci/test.sh
index 8e9f573f275e..b64cc510a505 100755
--- a/.ci/test.sh
+++ b/.ci/test.sh
@@ -9,7 +9,7 @@ elif [[ $OS_NAME == "linux" ]] && [[ $COMPILER == "clang" ]]; then
 fi
 
 conda create -q -y -n $CONDA_ENV python=$PYTHON_VERSION
-source ${CONDA}/bin/activate $CONDA_ENV
+source activate $CONDA_ENV
 
 cd $BUILD_DIRECTORY
 
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index ed3394815a97..608dea22680d 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -39,9 +39,16 @@ jobs:
           export GITHUB_ACTIONS="true"
           export CONDA="$HOME/miniconda"
           export PATH="$CONDA/bin:$PATH"
+          echo '----- CONDA/bin -----'
+          ls $CONDA/bin
+          echo '----- CONDA -----'
+          ls $CONDA
+          echo '----- PATH -----'
+          echo "PATH: $PATH"
+          echo '--------------'
           export CONDA_ENV="test-env"
           export LGB_VER=$(head -n 1 VERSION.txt)
           export AMDAPPSDK_PATH=$HOME/AMDAPPSDK
           export LD_LIBRARY_PATH="$AMDAPPSDK_PATH/lib/x86_64:$LD_LIBRARY_PATH"
-          bash $GITHUB_WORKSPACE/.ci/setup.sh
-          bash $GITHUB_WORKSPACE/.ci/test.sh
+          $GITHUB_WORKSPACE/.ci/setup.sh
+          $GITHUB_WORKSPACE/.ci/test.sh

From ceb2ff2c9e1771fa117b3c593ffaa5bccadab5ae Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Thu, 21 May 2020 22:35:59 -0500
Subject: [PATCH 23/95] WHERE IS ACTIVATE

---
 .ci/setup.sh               | 8 ++++++++
 .github/workflows/main.yml | 7 -------
 2 files changed, 8 insertions(+), 7 deletions(-)

diff --git a/.ci/setup.sh b/.ci/setup.sh
index 0c4101189346..1fcc773f98f5 100755
--- a/.ci/setup.sh
+++ b/.ci/setup.sh
@@ -46,3 +46,11 @@ if [[ $TRAVIS == "true" ]] || [[ $OS_NAME == "macos" ]]; then
 fi
 conda config --set always_yes yes --set changeps1 no
 conda update -q -y conda
+
+echo '----- CONDA/bin -----'
+ls $CONDA/bin
+echo '----- CONDA -----'
+ls $CONDA
+echo '----- PATH -----'
+echo "PATH: $PATH"
+echo '--------------'
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 608dea22680d..dccec6b95e12 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -39,13 +39,6 @@ jobs:
           export GITHUB_ACTIONS="true"
           export CONDA="$HOME/miniconda"
           export PATH="$CONDA/bin:$PATH"
-          echo '----- CONDA/bin -----'
-          ls $CONDA/bin
-          echo '----- CONDA -----'
-          ls $CONDA
-          echo '----- PATH -----'
-          echo "PATH: $PATH"
-          echo '--------------'
           export CONDA_ENV="test-env"
           export LGB_VER=$(head -n 1 VERSION.txt)
           export AMDAPPSDK_PATH=$HOME/AMDAPPSDK

From 3c5a64ec1b793db2da7f1158383bdd65f0890da4 Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Thu, 21 May 2020 22:39:18 -0500
Subject: [PATCH 24/95] set up conda

---
 .ci/setup.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.ci/setup.sh b/.ci/setup.sh
index 1fcc773f98f5..d0487b4c6ba7 100755
--- a/.ci/setup.sh
+++ b/.ci/setup.sh
@@ -36,7 +36,7 @@ else  # Linux
         mv $AMDAPPSDK_PATH/lib/x86_64/sdk/* $AMDAPPSDK_PATH/lib/x86_64/
         echo libamdocl64.so > $OPENCL_VENDOR_PATH/amdocl64.icd
     fi
-    if [[ $TRAVIS == "true" ]]; then
+    if [[ $TRAVIS == "true" ]] || [[ $GITHUB_ACTIOONS == "true" ]]; then
         wget -q -O conda.sh https://repo.anaconda.com/miniconda/Miniconda3-latest-Linux-x86_64.sh
     fi
 fi

From b0197353d9d87a57f2c2a1a0df89fc6ee6ff06fc Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Thu, 21 May 2020 22:40:52 -0500
Subject: [PATCH 25/95] more conda

---
 .ci/setup.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.ci/setup.sh b/.ci/setup.sh
index d0487b4c6ba7..faadb227d9a9 100755
--- a/.ci/setup.sh
+++ b/.ci/setup.sh
@@ -41,7 +41,7 @@ else  # Linux
     fi
 fi
 
-if [[ $TRAVIS == "true" ]] || [[ $OS_NAME == "macos" ]]; then
+if [[ $TRAVIS == "true" ]] || [[ $GITHUB_ACTIONS == "true" ]] || [[ $OS_NAME == "macos" ]]; then
     sh conda.sh -b -p $CONDA
 fi
 conda config --set always_yes yes --set changeps1 no

From a8340c86d240f5cc6ba4f2f11da09963d01bf5e4 Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Thu, 21 May 2020 22:42:55 -0500
Subject: [PATCH 26/95] PLEASE WORK

---
 .ci/setup.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.ci/setup.sh b/.ci/setup.sh
index faadb227d9a9..b04889c53e22 100755
--- a/.ci/setup.sh
+++ b/.ci/setup.sh
@@ -36,7 +36,7 @@ else  # Linux
         mv $AMDAPPSDK_PATH/lib/x86_64/sdk/* $AMDAPPSDK_PATH/lib/x86_64/
         echo libamdocl64.so > $OPENCL_VENDOR_PATH/amdocl64.icd
     fi
-    if [[ $TRAVIS == "true" ]] || [[ $GITHUB_ACTIOONS == "true" ]]; then
+    if [[ $TRAVIS == "true" ]] || [[ $GITHUB_ACTIONS == "true" ]]; then
         wget -q -O conda.sh https://repo.anaconda.com/miniconda/Miniconda3-latest-Linux-x86_64.sh
     fi
 fi

From 106402b7cce31aee3ae97caed65045a50627179d Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Thu, 21 May 2020 22:47:19 -0500
Subject: [PATCH 27/95] installing cpplint

---
 .github/workflows/main.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index dccec6b95e12..58f07b4b623b 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -38,7 +38,7 @@ jobs:
           fi
           export GITHUB_ACTIONS="true"
           export CONDA="$HOME/miniconda"
-          export PATH="$CONDA/bin:$PATH"
+          export PATH="$CONDA/bin:${HOME}/.local/bin:$PATH"
           export CONDA_ENV="test-env"
           export LGB_VER=$(head -n 1 VERSION.txt)
           export AMDAPPSDK_PATH=$HOME/AMDAPPSDK

From ebff0f670dce59e75404feeab0e11198ec521015 Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Thu, 21 May 2020 22:51:50 -0500
Subject: [PATCH 28/95] try r-package

---
 .github/workflows/main.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 58f07b4b623b..9280080ee3a4 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -9,7 +9,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        task: [lint] # r-package
+        task: [lint, r-package]
         os: [ubuntu-latest, macOS-latest, windows-latest]
         exclude:
           - os: macOS-latest

From 0626247577d4a4cb3e759b4af9ffdda0d2d8bc38 Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Thu, 21 May 2020 22:57:02 -0500
Subject: [PATCH 29/95] R version

---
 .github/workflows/main.yml | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 9280080ee3a4..1ac6f6ea55a1 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -26,6 +26,17 @@ jobs:
         if: matrix.os != 'windows-latest'
         shell: bash
         run: |
+          export HOME_DIRECTORY="$HOME"
+          export BUILD_DIRECTORY="$GITHUB_WORKSPACE"
+          if [[ "${{ matrix.os }}" == "macOS-latest" ]]; then
+              export OS_NAME="macos"
+              export COMPILER="gcc"
+              export R_MAC_VERSION=3.6.3
+          elif [[ "${{ matrix.os }}" == "ubuntu-latest" ]]; then
+              export OS_NAME="linux"
+              export COMPILER="clang"
+              export R_TRAVIS_LINUX_VERSION=3.6.3-1bionic;
+          fi
           export TASK="${{ matrix.task }}"
           export HOME_DIRECTORY="$HOME"
           export BUILD_DIRECTORY="$GITHUB_WORKSPACE"

From b627d82f8ee6f2de4914df54aadb33a945c75b0a Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Thu, 21 May 2020 23:15:49 -0500
Subject: [PATCH 30/95] try windows job

---
 .ci/test_windows.ps1       |  2 ++
 .github/workflows/main.yml | 22 ++++++++++++++++++++++
 2 files changed, 24 insertions(+)

diff --git a/.ci/test_windows.ps1 b/.ci/test_windows.ps1
index fd0e9f95a5e4..dbee579ef812 100644
--- a/.ci/test_windows.ps1
+++ b/.ci/test_windows.ps1
@@ -10,6 +10,8 @@ function Check-Output {
 if (Test-Path env:APPVEYOR) {
   $env:APPVEYOR = "true"
   $env:BUILD_SOURCESDIRECTORY = $env:APPVEYOR_BUILD_FOLDER
+} elseif ($env:APPVEYOR -eq "true") {
+  $env:BUILD_SOURCESDIRECTORY = $env:GITHUB_WORKSPACE
 }
 
 if ($env:TASK -eq "r-package") {
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 1ac6f6ea55a1..41bdee2f23f9 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -11,6 +11,16 @@ jobs:
       matrix:
         task: [lint, r-package]
         os: [ubuntu-latest, macOS-latest, windows-latest]
+        include:
+          - os: ubuntu-latest
+            task: r-package
+          - os: macOS-latest
+            task: r-package
+          - os: windows-latest
+            task: r-package
+            compiler: MINGW
+          - os: ubuntu-latest
+            task: lint
         exclude:
           - os: macOS-latest
             task: lint
@@ -37,6 +47,9 @@ jobs:
               export COMPILER="clang"
               export R_TRAVIS_LINUX_VERSION=3.6.3-1bionic;
           fi
+          if [ -z ${{ matrix.compiler }} ]; then
+              export COMPILER=${{ matrix.compiler }}
+          fi
           export TASK="${{ matrix.task }}"
           export HOME_DIRECTORY="$HOME"
           export BUILD_DIRECTORY="$GITHUB_WORKSPACE"
@@ -56,3 +69,12 @@ jobs:
           export LD_LIBRARY_PATH="$AMDAPPSDK_PATH/lib/x86_64:$LD_LIBRARY_PATH"
           $GITHUB_WORKSPACE/.ci/setup.sh
           $GITHUB_WORKSPACE/.ci/test.sh
+      - name: Setup and run tests on Windows
+        if: matrix.os == 'windows-latest'
+        shell: pwsh
+        run: |
+          $env:HOME_DIRECTORY=$env:HOME
+          $env:GITHUB_ACTIONS="true"
+          $env:CONDA_ENV="test-env"
+          & "conda init powershell"
+          & "powershell -ExecutionPolicy Bypass -File %BUILD_DIRECTORY%/.ci/test_windows.ps1"

From 05b9b87d5ff7d7c03295bd80af9951d4382f4d7b Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Thu, 21 May 2020 23:20:57 -0500
Subject: [PATCH 31/95] make windows work

---
 .github/workflows/main.yml | 2 --
 1 file changed, 2 deletions(-)

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 41bdee2f23f9..93277e7c09b0 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -75,6 +75,4 @@ jobs:
         run: |
           $env:HOME_DIRECTORY=$env:HOME
           $env:GITHUB_ACTIONS="true"
-          $env:CONDA_ENV="test-env"
-          & "conda init powershell"
           & "powershell -ExecutionPolicy Bypass -File %BUILD_DIRECTORY%/.ci/test_windows.ps1"

From dcefc10bfc6582cf719c56bfd5703ebf7efc0718 Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Thu, 21 May 2020 23:23:01 -0500
Subject: [PATCH 32/95] use powershell

---
 .github/workflows/main.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 93277e7c09b0..bf0e6e2e9855 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -71,7 +71,7 @@ jobs:
           $GITHUB_WORKSPACE/.ci/test.sh
       - name: Setup and run tests on Windows
         if: matrix.os == 'windows-latest'
-        shell: pwsh
+        shell: cmd
         run: |
           $env:HOME_DIRECTORY=$env:HOME
           $env:GITHUB_ACTIONS="true"

From 1ce1a97e101137c2b45b6ae69c61a1d354ad2196 Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Thu, 21 May 2020 23:26:37 -0500
Subject: [PATCH 33/95] exe

---
 .github/workflows/main.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index bf0e6e2e9855..a93b018a7ed9 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -75,4 +75,4 @@ jobs:
         run: |
           $env:HOME_DIRECTORY=$env:HOME
           $env:GITHUB_ACTIONS="true"
-          & "powershell -ExecutionPolicy Bypass -File %BUILD_DIRECTORY%/.ci/test_windows.ps1"
+          powershell.exe -ExecutionPolicy Bypass -File %GITHUB_WORKSPACE%/.ci/test_windows.ps1

From 7c08d5dc160f00cf4fc995ca8fe8e1fedbb6dc8e Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Thu, 21 May 2020 23:50:20 -0500
Subject: [PATCH 34/95] use conda

---
 .github/workflows/main.yml | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index a93b018a7ed9..449ca80d3a9b 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -10,7 +10,7 @@ jobs:
       fail-fast: false
       matrix:
         task: [lint, r-package]
-        os: [ubuntu-latest, macOS-latest, windows-latest]
+        os: [windows-latest] # ubuntu-latest, macOS-latest, 
         include:
           - os: ubuntu-latest
             task: r-package
@@ -69,6 +69,12 @@ jobs:
           export LD_LIBRARY_PATH="$AMDAPPSDK_PATH/lib/x86_64:$LD_LIBRARY_PATH"
           $GITHUB_WORKSPACE/.ci/setup.sh
           $GITHUB_WORKSPACE/.ci/test.sh
+      # reference: https://github.com/marketplace/actions/setup-conda
+      - name: Use conda on Windows
+        if: matrix.os == 'windows-latest'
+        uses: s-weigand/setup-conda@v1
+        with:
+          activate-conda: true
       - name: Setup and run tests on Windows
         if: matrix.os == 'windows-latest'
         shell: cmd

From ee1c6c36eeb4de63be9347a0c77de0c74e9bbd5f Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Thu, 21 May 2020 23:57:51 -0500
Subject: [PATCH 35/95] conda init powershell

---
 .github/workflows/main.yml | 25 ++++++++++++-------------
 1 file changed, 12 insertions(+), 13 deletions(-)

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 449ca80d3a9b..3bb91a039f5c 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -9,23 +9,21 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        task: [lint, r-package]
-        os: [windows-latest] # ubuntu-latest, macOS-latest, 
         include:
-          - os: ubuntu-latest
-            task: r-package
-          - os: macOS-latest
-            task: r-package
+          # - os: ubuntu-latest
+          #   task: r-package
+          # - os: macOS-latest
+          #   task: r-package
           - os: windows-latest
             task: r-package
             compiler: MINGW
-          - os: ubuntu-latest
-            task: lint
-        exclude:
-          - os: macOS-latest
-            task: lint
-          - os: windows-latest
-            task: lint
+          # - os: ubuntu-latest
+          #   task: lint
+        # exclude:
+        #   - os: macOS-latest
+        #     task: lint
+        #   - os: windows-latest
+        #     task: lint
     steps:
       - name: Checkout repository
         uses: actions/checkout@v1
@@ -81,4 +79,5 @@ jobs:
         run: |
           $env:HOME_DIRECTORY=$env:HOME
           $env:GITHUB_ACTIONS="true"
+          conda init powershell
           powershell.exe -ExecutionPolicy Bypass -File %GITHUB_WORKSPACE%/.ci/test_windows.ps1

From 72240c4f6bfae2988f47836e0991933f7aef51a0 Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Fri, 22 May 2020 00:09:50 -0500
Subject: [PATCH 36/95] different conda approach

---
 .appveyor.yml              |  2 --
 .github/workflows/main.yml | 12 +++++++++---
 2 files changed, 9 insertions(+), 5 deletions(-)

diff --git a/.appveyor.yml b/.appveyor.yml
index f27fa78fb89c..5aa149bfe5d3 100644
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -13,8 +13,6 @@ branches:
 
 environment:
   matrix:
-    - COMPILER: MINGW
-      TASK: r-package
     - COMPILER: MSVC
       TASK: r-package
       APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2019
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 3bb91a039f5c..8f35b17e1605 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -67,12 +67,18 @@ jobs:
           export LD_LIBRARY_PATH="$AMDAPPSDK_PATH/lib/x86_64:$LD_LIBRARY_PATH"
           $GITHUB_WORKSPACE/.ci/setup.sh
           $GITHUB_WORKSPACE/.ci/test.sh
-      # reference: https://github.com/marketplace/actions/setup-conda
+      # # reference: https://github.com/marketplace/actions/setup-conda
+      # - name: Use conda on Windows
+      #   if: matrix.os == 'windows-latest'
+      #   uses: s-weigand/setup-conda@v1
+      #   with:
+      #     activate-conda: true
+      #  https://github.com/marketplace/actions/setup-miniconda
       - name: Use conda on Windows
         if: matrix.os == 'windows-latest'
-        uses: s-weigand/setup-conda@v1
+        uses: goanpeca/setup-miniconda@v1
         with:
-          activate-conda: true
+          auto-update-conda: false
       - name: Setup and run tests on Windows
         if: matrix.os == 'windows-latest'
         shell: cmd

From 2ec68085a062462354d6627d763bcdccbe74a973 Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Fri, 22 May 2020 00:13:36 -0500
Subject: [PATCH 37/95] make it work

---
 .ci/test_windows.ps1       | 2 +-
 .github/workflows/main.yml | 1 +
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/.ci/test_windows.ps1 b/.ci/test_windows.ps1
index dbee579ef812..04df3f2970a7 100644
--- a/.ci/test_windows.ps1
+++ b/.ci/test_windows.ps1
@@ -10,7 +10,7 @@ function Check-Output {
 if (Test-Path env:APPVEYOR) {
   $env:APPVEYOR = "true"
   $env:BUILD_SOURCESDIRECTORY = $env:APPVEYOR_BUILD_FOLDER
-} elseif ($env:APPVEYOR -eq "true") {
+} elseif ($env:GITHUB_ACTIONS -eq "true") {
   $env:BUILD_SOURCESDIRECTORY = $env:GITHUB_WORKSPACE
 }
 
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 8f35b17e1605..1e8228ea31e7 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -85,5 +85,6 @@ jobs:
         run: |
           $env:HOME_DIRECTORY=$env:HOME
           $env:GITHUB_ACTIONS="true"
+          $env:TASK="r-package"
           conda init powershell
           powershell.exe -ExecutionPolicy Bypass -File %GITHUB_WORKSPACE%/.ci/test_windows.ps1

From d5a97b916180b5e52afcd6c8f76d09dc5c39ecd7 Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Fri, 22 May 2020 00:21:18 -0500
Subject: [PATCH 38/95] cleaning up

---
 .ci/setup.sh                   | 8 --------
 .ci/test_r_package_windows.ps1 | 2 ++
 .ci/test_windows.ps1           | 4 ++++
 3 files changed, 6 insertions(+), 8 deletions(-)

diff --git a/.ci/setup.sh b/.ci/setup.sh
index b04889c53e22..73adee173ca8 100755
--- a/.ci/setup.sh
+++ b/.ci/setup.sh
@@ -46,11 +46,3 @@ if [[ $TRAVIS == "true" ]] || [[ $GITHUB_ACTIONS == "true" ]] || [[ $OS_NAME ==
 fi
 conda config --set always_yes yes --set changeps1 no
 conda update -q -y conda
-
-echo '----- CONDA/bin -----'
-ls $CONDA/bin
-echo '----- CONDA -----'
-ls $CONDA
-echo '----- PATH -----'
-echo "PATH: $PATH"
-echo '--------------'
diff --git a/.ci/test_r_package_windows.ps1 b/.ci/test_r_package_windows.ps1
index 966cc3dc0e91..3e4d1b2b1e2d 100644
--- a/.ci/test_r_package_windows.ps1
+++ b/.ci/test_r_package_windows.ps1
@@ -12,6 +12,8 @@ function Download-File-With-Retries {
   } while(!$?);
 }
 
+Write-Output "schmibberty"
+
 $env:R_WINDOWS_VERSION = "3.6.3"
 $env:R_LIB_PATH = "$env:BUILD_SOURCESDIRECTORY/RLibrary" -replace '[\\]', '/'
 $env:R_LIBS = "$env:R_LIB_PATH"
diff --git a/.ci/test_windows.ps1 b/.ci/test_windows.ps1
index 04df3f2970a7..68534b0ff80b 100644
--- a/.ci/test_windows.ps1
+++ b/.ci/test_windows.ps1
@@ -5,16 +5,20 @@ function Check-Output {
     Exit -1
   }
 }
+Write-Output "here"
 
 # unify environment variables for Azure devops and AppVeyor
 if (Test-Path env:APPVEYOR) {
   $env:APPVEYOR = "true"
   $env:BUILD_SOURCESDIRECTORY = $env:APPVEYOR_BUILD_FOLDER
 } elseif ($env:GITHUB_ACTIONS -eq "true") {
+  Write-Output "there"
   $env:BUILD_SOURCESDIRECTORY = $env:GITHUB_WORKSPACE
 }
+Write-Output "libberty"
 
 if ($env:TASK -eq "r-package") {
+  Write-Output "bibberty"
   & $env:BUILD_SOURCESDIRECTORY\.ci\test_r_package_windows.ps1 ; Check-Output $?
   Exit 0
 }

From 9372b4100729391095facbfd7e0299657ed2ecea Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Fri, 22 May 2020 00:25:24 -0500
Subject: [PATCH 39/95] init powershell

---
 .github/workflows/main.yml | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 1e8228ea31e7..1fc486de1ad1 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -79,6 +79,10 @@ jobs:
         uses: goanpeca/setup-miniconda@v1
         with:
           auto-update-conda: false
+      - name: conda init powershell
+        if: matrix.os == 'windows-latest'
+        shell: cmd
+        run: conda init powershell
       - name: Setup and run tests on Windows
         if: matrix.os == 'windows-latest'
         shell: cmd
@@ -86,5 +90,4 @@ jobs:
           $env:HOME_DIRECTORY=$env:HOME
           $env:GITHUB_ACTIONS="true"
           $env:TASK="r-package"
-          conda init powershell
           powershell.exe -ExecutionPolicy Bypass -File %GITHUB_WORKSPACE%/.ci/test_windows.ps1

From 56e94e6cf8e26666734be2aea6436f27a81b51fe Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Fri, 22 May 2020 21:08:31 -0500
Subject: [PATCH 40/95] fixing windows

---
 .ci/test_windows.ps1       |  5 +----
 .github/workflows/main.yml | 16 +++++++++++++---
 2 files changed, 14 insertions(+), 7 deletions(-)

diff --git a/.ci/test_windows.ps1 b/.ci/test_windows.ps1
index 68534b0ff80b..885a37f2e59a 100644
--- a/.ci/test_windows.ps1
+++ b/.ci/test_windows.ps1
@@ -5,20 +5,17 @@ function Check-Output {
     Exit -1
   }
 }
-Write-Output "here"
 
 # unify environment variables for Azure devops and AppVeyor
 if (Test-Path env:APPVEYOR) {
   $env:APPVEYOR = "true"
   $env:BUILD_SOURCESDIRECTORY = $env:APPVEYOR_BUILD_FOLDER
 } elseif ($env:GITHUB_ACTIONS -eq "true") {
-  Write-Output "there"
   $env:BUILD_SOURCESDIRECTORY = $env:GITHUB_WORKSPACE
 }
-Write-Output "libberty"
 
 if ($env:TASK -eq "r-package") {
-  Write-Output "bibberty"
+  Write-Output "libberty"
   & $env:BUILD_SOURCESDIRECTORY\.ci\test_r_package_windows.ps1 ; Check-Output $?
   Exit 0
 }
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 1fc486de1ad1..df2ad2ab2ea1 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -87,7 +87,17 @@ jobs:
         if: matrix.os == 'windows-latest'
         shell: cmd
         run: |
-          $env:HOME_DIRECTORY=$env:HOME
-          $env:GITHUB_ACTIONS="true"
-          $env:TASK="r-package"
+          set HOME_DIRECTORY=%HOME%
+          set GITHUB_ACTIONS="true"
+          set TASK="r-package"
           powershell.exe -ExecutionPolicy Bypass -File %GITHUB_WORKSPACE%/.ci/test_windows.ps1
+
+# links
+# * https://github.com/microsoft/LightGBM/issues/2353
+# *  https://help.github.com/en/actions/reference/workflow-syntax-for-github-actions#jobsjob_iddefaultsrun
+# * https://help.github.com/en/actions/reference/virtual-environments-for-github-hosted-runners
+# * https://help.github.com/en/actions/reference/workflow-commands-for-github-actions#setting-an-environment-variable
+# * https://github.com/marketplace/actions/setup-miniconda
+# * https://help.github.com/en/actions/reference/virtual-environments-for-github-hosted-runners#supported-runners-and-hardware-resources
+# * https://github.com/actions/virtual-environments/blob/master/images/win/Windows2019-Readme.md
+# * 

From 22c082fb3a134942fca6556aaf68ab9821dc6e3e Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Fri, 22 May 2020 21:14:53 -0500
Subject: [PATCH 41/95] more windows

---
 .ci/test_windows.ps1       | 1 +
 .github/workflows/main.yml | 6 +++---
 2 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/.ci/test_windows.ps1 b/.ci/test_windows.ps1
index 885a37f2e59a..886c83ed7e78 100644
--- a/.ci/test_windows.ps1
+++ b/.ci/test_windows.ps1
@@ -14,6 +14,7 @@ if (Test-Path env:APPVEYOR) {
   $env:BUILD_SOURCESDIRECTORY = $env:GITHUB_WORKSPACE
 }
 
+Write-Output "TASK: $env:TASK"
 if ($env:TASK -eq "r-package") {
   Write-Output "libberty"
   & $env:BUILD_SOURCESDIRECTORY\.ci\test_r_package_windows.ps1 ; Check-Output $?
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index df2ad2ab2ea1..1e183dc6844f 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -86,10 +86,10 @@ jobs:
       - name: Setup and run tests on Windows
         if: matrix.os == 'windows-latest'
         shell: cmd
+        env:
+          GITHUB_ACTIONS: "true"
+          TASK: "r-package"
         run: |
-          set HOME_DIRECTORY=%HOME%
-          set GITHUB_ACTIONS="true"
-          set TASK="r-package"
           powershell.exe -ExecutionPolicy Bypass -File %GITHUB_WORKSPACE%/.ci/test_windows.ps1
 
 # links

From b4f96e17fea5d8c5e79897bd3a15376f6ca4383c Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Fri, 22 May 2020 21:25:52 -0500
Subject: [PATCH 42/95] build directory

---
 .ci/test_r_package_windows.ps1 | 1 +
 .ci/test_windows.ps1           | 3 +--
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/.ci/test_r_package_windows.ps1 b/.ci/test_r_package_windows.ps1
index 3e4d1b2b1e2d..509565155373 100644
--- a/.ci/test_r_package_windows.ps1
+++ b/.ci/test_r_package_windows.ps1
@@ -13,6 +13,7 @@ function Download-File-With-Retries {
 }
 
 Write-Output "schmibberty"
+Write-Output "BUILD_SOURCESDIRECTORY (test-r): $env:BUILD_SOURCESDIRECTORY"
 
 $env:R_WINDOWS_VERSION = "3.6.3"
 $env:R_LIB_PATH = "$env:BUILD_SOURCESDIRECTORY/RLibrary" -replace '[\\]', '/'
diff --git a/.ci/test_windows.ps1 b/.ci/test_windows.ps1
index 886c83ed7e78..ceb9d6d975d2 100644
--- a/.ci/test_windows.ps1
+++ b/.ci/test_windows.ps1
@@ -13,10 +13,9 @@ if (Test-Path env:APPVEYOR) {
 } elseif ($env:GITHUB_ACTIONS -eq "true") {
   $env:BUILD_SOURCESDIRECTORY = $env:GITHUB_WORKSPACE
 }
+Write-Output "BUILD_SOURCESDIRECTORY (test): $env:BUILD_SOURCESDIRECTORY"
 
-Write-Output "TASK: $env:TASK"
 if ($env:TASK -eq "r-package") {
-  Write-Output "libberty"
   & $env:BUILD_SOURCESDIRECTORY\.ci\test_r_package_windows.ps1 ; Check-Output $?
   Exit 0
 }

From 2b24d8c261fce1f9429212e6a4e2b9a20d43a052 Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Fri, 22 May 2020 21:34:24 -0500
Subject: [PATCH 43/95] no way right

---
 .ci/test_r_package_windows.ps1 | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/.ci/test_r_package_windows.ps1 b/.ci/test_r_package_windows.ps1
index 509565155373..89060339fa6d 100644
--- a/.ci/test_r_package_windows.ps1
+++ b/.ci/test_r_package_windows.ps1
@@ -70,7 +70,9 @@ if ($env:COMPILER -eq "MINGW") {
 
 Write-Output "Installing dependencies"
 $packages = "c('data.table', 'jsonlite', 'Matrix', 'processx', 'R6', 'testthat'), dependencies = c('Imports', 'Depends', 'LinkingTo')"
-Rscript --vanilla -e "options(install.packages.check.source = 'no'); install.packages($packages, repos = '$env:CRAN_MIRROR', type = 'binary', lib = '$env:R_LIB_PATH')" ; Check-Output $?
+
+# have to divert stderr to null because GitHub Actions treats writing to stderr as a failed task
+Rscript --vanilla -e "options(install.packages.check.source = 'no'); install.packages($packages, repos = '$env:CRAN_MIRROR', type = 'binary', lib = '$env:R_LIB_PATH')" 2> $null ; Check-Output $?
 
 Write-Output "Building R package"
 

From 1a63eefe39c0abe57b66f3364b9c9d7fb15a9514 Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Fri, 22 May 2020 21:41:29 -0500
Subject: [PATCH 44/95] maybe it will work

---
 .ci/test_r_package_windows.ps1 | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/.ci/test_r_package_windows.ps1 b/.ci/test_r_package_windows.ps1
index 89060339fa6d..078472b6f380 100644
--- a/.ci/test_r_package_windows.ps1
+++ b/.ci/test_r_package_windows.ps1
@@ -12,7 +12,6 @@ function Download-File-With-Retries {
   } while(!$?);
 }
 
-Write-Output "schmibberty"
 Write-Output "BUILD_SOURCESDIRECTORY (test-r): $env:BUILD_SOURCESDIRECTORY"
 
 $env:R_WINDOWS_VERSION = "3.6.3"
@@ -72,7 +71,7 @@ Write-Output "Installing dependencies"
 $packages = "c('data.table', 'jsonlite', 'Matrix', 'processx', 'R6', 'testthat'), dependencies = c('Imports', 'Depends', 'LinkingTo')"
 
 # have to divert stderr to null because GitHub Actions treats writing to stderr as a failed task
-Rscript --vanilla -e "options(install.packages.check.source = 'no'); install.packages($packages, repos = '$env:CRAN_MIRROR', type = 'binary', lib = '$env:R_LIB_PATH')" 2> $null ; Check-Output $?
+Rscript --vanilla -e "options(install.packages.check.source = 'no'); install.packages($packages, repos = '$env:CRAN_MIRROR', type = 'binary', lib = '$env:R_LIB_PATH')" 2> $null # ; Check-Output $?
 
 Write-Output "Building R package"
 

From 54a58c39c829a5d66ec04c8bf11902585f2b2974 Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Fri, 22 May 2020 21:53:48 -0500
Subject: [PATCH 45/95] trying Visual Studio

---
 .appveyor.yml                  | 10 +++++-----
 .ci/test_r_package_windows.ps1 |  8 ++------
 .ci/test_windows.ps1           |  1 -
 .github/workflows/main.yml     |  8 +++-----
 .travis.yml                    | 20 ++++++++++----------
 5 files changed, 20 insertions(+), 27 deletions(-)

diff --git a/.appveyor.yml b/.appveyor.yml
index 5aa149bfe5d3..1ce545ac0121 100644
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -13,11 +13,11 @@ branches:
 
 environment:
   matrix:
-    - COMPILER: MSVC
-      TASK: r-package
-      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2019
-    - COMPILER: MSVC
-      TASK: python
+    # - COMPILER: MSVC
+    #   TASK: r-package
+    #   APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2019
+    # - COMPILER: MSVC
+    #   TASK: python
     - COMPILER: MINGW
       TASK: python
 
diff --git a/.ci/test_r_package_windows.ps1 b/.ci/test_r_package_windows.ps1
index 078472b6f380..4657d8fe3ae5 100644
--- a/.ci/test_r_package_windows.ps1
+++ b/.ci/test_r_package_windows.ps1
@@ -12,8 +12,6 @@ function Download-File-With-Retries {
   } while(!$?);
 }
 
-Write-Output "BUILD_SOURCESDIRECTORY (test-r): $env:BUILD_SOURCESDIRECTORY"
-
 $env:R_WINDOWS_VERSION = "3.6.3"
 $env:R_LIB_PATH = "$env:BUILD_SOURCESDIRECTORY/RLibrary" -replace '[\\]', '/'
 $env:R_LIBS = "$env:R_LIB_PATH"
@@ -52,7 +50,7 @@ Write-Output "Done installing Rtools"
 
 # MiKTeX and pandoc can be skipped on non-MINGW builds, since we don't
 # build the package documentation for those
-if ($env:COMPILER -eq "MINGW") {
+if ($env:COMPILER -ne "MSVC") {
     Write-Output "Downloading MiKTeX"
     Download-File-With-Retries -url "https://miktex.org/download/win/miktexsetup-x64.zip" -destfile "miktexsetup-x64.zip"
     Add-Type -AssemblyName System.IO.Compression.FileSystem
@@ -69,9 +67,7 @@ if ($env:COMPILER -eq "MINGW") {
 
 Write-Output "Installing dependencies"
 $packages = "c('data.table', 'jsonlite', 'Matrix', 'processx', 'R6', 'testthat'), dependencies = c('Imports', 'Depends', 'LinkingTo')"
-
-# have to divert stderr to null because GitHub Actions treats writing to stderr as a failed task
-Rscript --vanilla -e "options(install.packages.check.source = 'no'); install.packages($packages, repos = '$env:CRAN_MIRROR', type = 'binary', lib = '$env:R_LIB_PATH')" 2> $null # ; Check-Output $?
+Rscript --vanilla -e "options(install.packages.check.source = 'no'); install.packages($packages, repos = '$env:CRAN_MIRROR', type = 'binary', lib = '$env:R_LIB_PATH')"
 
 Write-Output "Building R package"
 
diff --git a/.ci/test_windows.ps1 b/.ci/test_windows.ps1
index ceb9d6d975d2..04df3f2970a7 100644
--- a/.ci/test_windows.ps1
+++ b/.ci/test_windows.ps1
@@ -13,7 +13,6 @@ if (Test-Path env:APPVEYOR) {
 } elseif ($env:GITHUB_ACTIONS -eq "true") {
   $env:BUILD_SOURCESDIRECTORY = $env:GITHUB_WORKSPACE
 }
-Write-Output "BUILD_SOURCESDIRECTORY (test): $env:BUILD_SOURCESDIRECTORY"
 
 if ($env:TASK -eq "r-package") {
   & $env:BUILD_SOURCESDIRECTORY\.ci\test_r_package_windows.ps1 ; Check-Output $?
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 1e183dc6844f..2083bba36010 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -17,13 +17,11 @@ jobs:
           - os: windows-latest
             task: r-package
             compiler: MINGW
+          - os: windows-latest
+            task: r-package
+            compiler: MSVC
           # - os: ubuntu-latest
           #   task: lint
-        # exclude:
-        #   - os: macOS-latest
-        #     task: lint
-        #   - os: windows-latest
-        #     task: lint
     steps:
       - name: Checkout repository
         uses: actions/checkout@v1
diff --git a/.travis.yml b/.travis.yml
index 44cd1f6b00f0..3f0d99190687 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -14,17 +14,17 @@ env:
   global:  # default values
     - PYTHON_VERSION=3.8
   matrix:
-    - TASK=regular PYTHON_VERSION=3.6
-    - TASK=sdist PYTHON_VERSION=2.7
-    - TASK=bdist
-    - TASK=if-else
+    # - TASK=regular PYTHON_VERSION=3.6
+    # - TASK=sdist PYTHON_VERSION=2.7
+    # - TASK=bdist
+    # - TASK=if-else
     - TASK=lint
-    - TASK=check-docs
-    - TASK=mpi METHOD=source
-    - TASK=mpi METHOD=pip PYTHON_VERSION=3.7
-    - TASK=gpu METHOD=source PYTHON_VERSION=3.5
-    - TASK=gpu METHOD=pip PYTHON_VERSION=3.6
-    - TASK=r-package
+    # - TASK=check-docs
+    # - TASK=mpi METHOD=source
+    # - TASK=mpi METHOD=pip PYTHON_VERSION=3.7
+    # - TASK=gpu METHOD=source PYTHON_VERSION=3.5
+    # - TASK=gpu METHOD=pip PYTHON_VERSION=3.6
+    # - TASK=r-package
 
 matrix:
   exclude:

From 045d5304ec3f0941422026ba962e64961fb479fd Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Fri, 22 May 2020 22:20:08 -0500
Subject: [PATCH 46/95] do this

---
 .github/workflows/main.yml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 2083bba36010..6096bdc88990 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -88,7 +88,7 @@ jobs:
           GITHUB_ACTIONS: "true"
           TASK: "r-package"
         run: |
-          powershell.exe -ExecutionPolicy Bypass -File %GITHUB_WORKSPACE%/.ci/test_windows.ps1
+          powershell.exe -ExecutionPolicy Bypass ErrorActionPreference Continue -File %GITHUB_WORKSPACE%/.ci/test_windows.ps1
 
 # links
 # * https://github.com/microsoft/LightGBM/issues/2353
@@ -98,4 +98,4 @@ jobs:
 # * https://github.com/marketplace/actions/setup-miniconda
 # * https://help.github.com/en/actions/reference/virtual-environments-for-github-hosted-runners#supported-runners-and-hardware-resources
 # * https://github.com/actions/virtual-environments/blob/master/images/win/Windows2019-Readme.md
-# * 
+# * https://stackoverflow.com/questions/2095088/error-when-calling-3rd-party-executable-from-powershell-when-using-an-ide

From 68a17ee73817d201cf2bb5c713b8d4e14dc59b17 Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Fri, 22 May 2020 22:49:06 -0500
Subject: [PATCH 47/95] Windows is interesting

---
 .github/workflows/main.yml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 6096bdc88990..2de8a0828812 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -83,12 +83,12 @@ jobs:
         run: conda init powershell
       - name: Setup and run tests on Windows
         if: matrix.os == 'windows-latest'
-        shell: cmd
+        shell: pwsh
         env:
           GITHUB_ACTIONS: "true"
           TASK: "r-package"
         run: |
-          powershell.exe -ExecutionPolicy Bypass ErrorActionPreference Continue -File %GITHUB_WORKSPACE%/.ci/test_windows.ps1
+          & "$env:GITHUB_WORKSPACE/.ci/test_windows.ps1"
 
 # links
 # * https://github.com/microsoft/LightGBM/issues/2353

From eb75583af1f4133a99098d72ae24f4ddf434eb6d Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Fri, 22 May 2020 22:59:54 -0500
Subject: [PATCH 48/95] put back check-output

---
 .ci/test_r_package_windows.ps1 | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.ci/test_r_package_windows.ps1 b/.ci/test_r_package_windows.ps1
index 4657d8fe3ae5..eb09bdf28dae 100644
--- a/.ci/test_r_package_windows.ps1
+++ b/.ci/test_r_package_windows.ps1
@@ -67,7 +67,7 @@ if ($env:COMPILER -ne "MSVC") {
 
 Write-Output "Installing dependencies"
 $packages = "c('data.table', 'jsonlite', 'Matrix', 'processx', 'R6', 'testthat'), dependencies = c('Imports', 'Depends', 'LinkingTo')"
-Rscript --vanilla -e "options(install.packages.check.source = 'no'); install.packages($packages, repos = '$env:CRAN_MIRROR', type = 'binary', lib = '$env:R_LIB_PATH')"
+Rscript --vanilla -e "options(install.packages.check.source = 'no'); install.packages($packages, repos = '$env:CRAN_MIRROR', type = 'binary', lib = '$env:R_LIB_PATH')"  ; Check-Output $?
 
 Write-Output "Building R package"
 

From 81e387ec71a8fe389e3cd6560e75748b5e3a7deb Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Fri, 22 May 2020 23:06:29 -0500
Subject: [PATCH 49/95] set compiler

---
 .github/workflows/main.yml | 15 +++++----------
 1 file changed, 5 insertions(+), 10 deletions(-)

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 2de8a0828812..b16db00ee9fb 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -20,8 +20,8 @@ jobs:
           - os: windows-latest
             task: r-package
             compiler: MSVC
-          # - os: ubuntu-latest
-          #   task: lint
+          - os: ubuntu-latest
+            task: lint
     steps:
       - name: Checkout repository
         uses: actions/checkout@v1
@@ -32,8 +32,6 @@ jobs:
         if: matrix.os != 'windows-latest'
         shell: bash
         run: |
-          export HOME_DIRECTORY="$HOME"
-          export BUILD_DIRECTORY="$GITHUB_WORKSPACE"
           if [[ "${{ matrix.os }}" == "macOS-latest" ]]; then
               export OS_NAME="macos"
               export COMPILER="gcc"
@@ -65,12 +63,6 @@ jobs:
           export LD_LIBRARY_PATH="$AMDAPPSDK_PATH/lib/x86_64:$LD_LIBRARY_PATH"
           $GITHUB_WORKSPACE/.ci/setup.sh
           $GITHUB_WORKSPACE/.ci/test.sh
-      # # reference: https://github.com/marketplace/actions/setup-conda
-      # - name: Use conda on Windows
-      #   if: matrix.os == 'windows-latest'
-      #   uses: s-weigand/setup-conda@v1
-      #   with:
-      #     activate-conda: true
       #  https://github.com/marketplace/actions/setup-miniconda
       - name: Use conda on Windows
         if: matrix.os == 'windows-latest'
@@ -88,6 +80,9 @@ jobs:
           GITHUB_ACTIONS: "true"
           TASK: "r-package"
         run: |
+          if ("${{ matrix.compiler }}" -ne "") {
+            $env:COMPILER = "${{ matrix.compiler }}"
+          }
           & "$env:GITHUB_WORKSPACE/.ci/test_windows.ps1"
 
 # links

From f2a0d1078032e5edc5e1dd400ed6f74dc1d2d2d3 Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Fri, 22 May 2020 23:25:58 -0500
Subject: [PATCH 50/95] stuff

---
 .github/workflows/main.yml | 14 ++++++--------
 1 file changed, 6 insertions(+), 8 deletions(-)

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index b16db00ee9fb..008f838694c7 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -17,11 +17,11 @@ jobs:
           - os: windows-latest
             task: r-package
             compiler: MINGW
-          - os: windows-latest
-            task: r-package
-            compiler: MSVC
-          - os: ubuntu-latest
-            task: lint
+          # - os: windows-latest
+          #   task: r-package
+          #   compiler: MSVC
+          # - os: ubuntu-latest
+          #   task: lint
     steps:
       - name: Checkout repository
         uses: actions/checkout@v1
@@ -86,11 +86,9 @@ jobs:
           & "$env:GITHUB_WORKSPACE/.ci/test_windows.ps1"
 
 # links
-# * https://github.com/microsoft/LightGBM/issues/2353
-# *  https://help.github.com/en/actions/reference/workflow-syntax-for-github-actions#jobsjob_iddefaultsrun
+# * https://help.github.com/en/actions/reference/workflow-syntax-for-github-actions#jobsjob_iddefaultsrun
 # * https://help.github.com/en/actions/reference/virtual-environments-for-github-hosted-runners
 # * https://help.github.com/en/actions/reference/workflow-commands-for-github-actions#setting-an-environment-variable
 # * https://github.com/marketplace/actions/setup-miniconda
 # * https://help.github.com/en/actions/reference/virtual-environments-for-github-hosted-runners#supported-runners-and-hardware-resources
 # * https://github.com/actions/virtual-environments/blob/master/images/win/Windows2019-Readme.md
-# * https://stackoverflow.com/questions/2095088/error-when-calling-3rd-party-executable-from-powershell-when-using-an-ide

From 5b786ed8c1d2f6c800a30e651c0757e29930c8fc Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Fri, 22 May 2020 23:33:50 -0500
Subject: [PATCH 51/95] more fixes

---
 .ci/test_r_package_windows.ps1 | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/.ci/test_r_package_windows.ps1 b/.ci/test_r_package_windows.ps1
index eb09bdf28dae..3f899be11c83 100644
--- a/.ci/test_r_package_windows.ps1
+++ b/.ci/test_r_package_windows.ps1
@@ -67,12 +67,12 @@ if ($env:COMPILER -ne "MSVC") {
 
 Write-Output "Installing dependencies"
 $packages = "c('data.table', 'jsonlite', 'Matrix', 'processx', 'R6', 'testthat'), dependencies = c('Imports', 'Depends', 'LinkingTo')"
-Rscript --vanilla -e "options(install.packages.check.source = 'no'); install.packages($packages, repos = '$env:CRAN_MIRROR', type = 'binary', lib = '$env:R_LIB_PATH')"  ; Check-Output $?
+Rscript --vanilla -e "options(install.packages.check.source = 'no'); install.packages($packages, repos = '$env:CRAN_MIRROR', type = 'binary', lib = '$env:R_LIB_PATH')" ; Check-Output $?
 
 Write-Output "Building R package"
 
 # R CMD check is not used for MSVC builds
-if ($env:COMPILER -ne "MSVC") {
+if ($env:COMPILER -eq "MINGW") {
   Rscript build_r.R --skip-install ; Check-Output $?
 
   $PKG_FILE_NAME = Get-Item *.tar.gz

From 38f5e5dbb9c605350245275d69509ad766105550 Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Fri, 22 May 2020 23:42:10 -0500
Subject: [PATCH 52/95] fix the broken things

---
 .ci/test_r_package_windows.ps1 | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/.ci/test_r_package_windows.ps1 b/.ci/test_r_package_windows.ps1
index 3f899be11c83..966cc3dc0e91 100644
--- a/.ci/test_r_package_windows.ps1
+++ b/.ci/test_r_package_windows.ps1
@@ -50,7 +50,7 @@ Write-Output "Done installing Rtools"
 
 # MiKTeX and pandoc can be skipped on non-MINGW builds, since we don't
 # build the package documentation for those
-if ($env:COMPILER -ne "MSVC") {
+if ($env:COMPILER -eq "MINGW") {
     Write-Output "Downloading MiKTeX"
     Download-File-With-Retries -url "https://miktex.org/download/win/miktexsetup-x64.zip" -destfile "miktexsetup-x64.zip"
     Add-Type -AssemblyName System.IO.Compression.FileSystem
@@ -72,7 +72,7 @@ Rscript --vanilla -e "options(install.packages.check.source = 'no'); install.pac
 Write-Output "Building R package"
 
 # R CMD check is not used for MSVC builds
-if ($env:COMPILER -eq "MINGW") {
+if ($env:COMPILER -ne "MSVC") {
   Rscript build_r.R --skip-install ; Check-Output $?
 
   $PKG_FILE_NAME = Get-Item *.tar.gz

From a384208d996a6e424b86c363803ece4f64a4e633 Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Fri, 22 May 2020 23:56:25 -0500
Subject: [PATCH 53/95] updating jobs

---
 .appveyor.yml              |  7 ++-----
 .ci/test_windows.ps1       |  2 --
 .github/workflows/main.yml | 19 ++++++++++---------
 .travis.yml                | 21 ++++++++++-----------
 4 files changed, 22 insertions(+), 27 deletions(-)

diff --git a/.appveyor.yml b/.appveyor.yml
index 1ce545ac0121..f3404faa68b9 100644
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -13,11 +13,8 @@ branches:
 
 environment:
   matrix:
-    # - COMPILER: MSVC
-    #   TASK: r-package
-    #   APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2019
-    # - COMPILER: MSVC
-    #   TASK: python
+    - COMPILER: MSVC
+      TASK: python
     - COMPILER: MINGW
       TASK: python
 
diff --git a/.ci/test_windows.ps1 b/.ci/test_windows.ps1
index 04df3f2970a7..fd0e9f95a5e4 100644
--- a/.ci/test_windows.ps1
+++ b/.ci/test_windows.ps1
@@ -10,8 +10,6 @@ function Check-Output {
 if (Test-Path env:APPVEYOR) {
   $env:APPVEYOR = "true"
   $env:BUILD_SOURCESDIRECTORY = $env:APPVEYOR_BUILD_FOLDER
-} elseif ($env:GITHUB_ACTIONS -eq "true") {
-  $env:BUILD_SOURCESDIRECTORY = $env:GITHUB_WORKSPACE
 }
 
 if ($env:TASK -eq "r-package") {
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 008f838694c7..ba765439d667 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -10,18 +10,18 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          # - os: ubuntu-latest
-          #   task: r-package
-          # - os: macOS-latest
-          #   task: r-package
+          - os: ubuntu-latest
+            task: r-package
+          - os: macOS-latest
+            task: r-package
           - os: windows-latest
             task: r-package
             compiler: MINGW
-          # - os: windows-latest
-          #   task: r-package
-          #   compiler: MSVC
-          # - os: ubuntu-latest
-          #   task: lint
+          - os: windows-latest
+            task: r-package
+            compiler: MSVC
+          - os: ubuntu-latest
+            task: lint
     steps:
       - name: Checkout repository
         uses: actions/checkout@v1
@@ -83,6 +83,7 @@ jobs:
           if ("${{ matrix.compiler }}" -ne "") {
             $env:COMPILER = "${{ matrix.compiler }}"
           }
+          $env:BUILD_SOURCESDIRECTORY = $env:GITHUB_WORKSPACE
           & "$env:GITHUB_WORKSPACE/.ci/test_windows.ps1"
 
 # links
diff --git a/.travis.yml b/.travis.yml
index 3f0d99190687..a00b250660b5 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -14,17 +14,16 @@ env:
   global:  # default values
     - PYTHON_VERSION=3.8
   matrix:
-    # - TASK=regular PYTHON_VERSION=3.6
-    # - TASK=sdist PYTHON_VERSION=2.7
-    # - TASK=bdist
-    # - TASK=if-else
-    - TASK=lint
-    # - TASK=check-docs
-    # - TASK=mpi METHOD=source
-    # - TASK=mpi METHOD=pip PYTHON_VERSION=3.7
-    # - TASK=gpu METHOD=source PYTHON_VERSION=3.5
-    # - TASK=gpu METHOD=pip PYTHON_VERSION=3.6
-    # - TASK=r-package
+    - TASK=regular PYTHON_VERSION=3.6
+    - TASK=sdist PYTHON_VERSION=2.7
+    - TASK=bdist
+    - TASK=if-else
+    - TASK=check-docs
+    - TASK=mpi METHOD=source
+    - TASK=mpi METHOD=pip PYTHON_VERSION=3.7
+    - TASK=gpu METHOD=source PYTHON_VERSION=3.5
+    - TASK=gpu METHOD=pip PYTHON_VERSION=3.6
+    - TASK=r-package
 
 matrix:
   exclude:

From 20ad23ed6285fb3199d6ffd7ca3f149c59bcf79f Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Sat, 23 May 2020 00:05:45 -0500
Subject: [PATCH 54/95] continuing

---
 .github/workflows/main.yml | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index ba765439d667..05d5afef89c4 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -79,11 +79,15 @@ jobs:
         env:
           GITHUB_ACTIONS: "true"
           TASK: "r-package"
+        # https://stackoverflow.com/questions/2095088/error-when-calling-3rd-party-executable-from-powershell-when-using-an-ide
+        # https://stackoverflow.com/a/11826589/3986677
         run: |
           if ("${{ matrix.compiler }}" -ne "") {
             $env:COMPILER = "${{ matrix.compiler }}"
           }
           $env:BUILD_SOURCESDIRECTORY = $env:GITHUB_WORKSPACE
+          Write-Output "CI default for Errors: $ErrorActionPreference"
+          $ErrorActionPreference = "Continue"
           & "$env:GITHUB_WORKSPACE/.ci/test_windows.ps1"
 
 # links

From 39fdc4fdac3958711b4080589fc4a42fafa3b279 Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Sat, 23 May 2020 00:16:24 -0500
Subject: [PATCH 55/95] poweshell is bad

---
 .github/workflows/main.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 05d5afef89c4..f53fd5cfea3b 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -88,7 +88,7 @@ jobs:
           $env:BUILD_SOURCESDIRECTORY = $env:GITHUB_WORKSPACE
           Write-Output "CI default for Errors: $ErrorActionPreference"
           $ErrorActionPreference = "Continue"
-          & "$env:GITHUB_WORKSPACE/.ci/test_windows.ps1"
+          & cmd /c "$env:GITHUB_WORKSPACE/.ci/test_windows.ps1 2>&1"
 
 # links
 # * https://help.github.com/en/actions/reference/workflow-syntax-for-github-actions#jobsjob_iddefaultsrun

From adb7751b6a88d47b444c6b8265c21a2250b8f3f2 Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Sat, 23 May 2020 00:34:54 -0500
Subject: [PATCH 56/95] ok so maybe not powershell

---
 .github/workflows/main.yml | 26 ++++++++++++++++++--------
 1 file changed, 18 insertions(+), 8 deletions(-)

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index f53fd5cfea3b..566e127afa38 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -4,7 +4,7 @@ on: [push]
 
 jobs:
   test:
-    name: ${{ matrix.task }} (${{ matrix.os }})
+    name: ${{ matrix.task }} (${{ matrix.os }}, ${{ matrix.subtitle }})
     runs-on: ${{ matrix.os }}
     strategy:
       fail-fast: false
@@ -12,14 +12,18 @@ jobs:
         include:
           - os: ubuntu-latest
             task: r-package
+            subtitle: ""
           - os: macOS-latest
             task: r-package
+            subtitle: ""
           - os: windows-latest
             task: r-package
             compiler: MINGW
+            subtitle: MINGW
           - os: windows-latest
             task: r-package
             compiler: MSVC
+            subtitle: MSVC
           - os: ubuntu-latest
             task: lint
     steps:
@@ -81,14 +85,20 @@ jobs:
           TASK: "r-package"
         # https://stackoverflow.com/questions/2095088/error-when-calling-3rd-party-executable-from-powershell-when-using-an-ide
         # https://stackoverflow.com/a/11826589/3986677
+        # run: |
+        #   if ("${{ matrix.compiler }}" -ne "") {
+        #     $env:COMPILER = "${{ matrix.compiler }}"
+        #   }
+        #   $env:BUILD_SOURCESDIRECTORY = $env:GITHUB_WORKSPACE
+        #   cmd /c "$env:GITHUB_WORKSPACE/.ci/test_windows.ps1"
         run: |
-          if ("${{ matrix.compiler }}" -ne "") {
-            $env:COMPILER = "${{ matrix.compiler }}"
-          }
-          $env:BUILD_SOURCESDIRECTORY = $env:GITHUB_WORKSPACE
-          Write-Output "CI default for Errors: $ErrorActionPreference"
-          $ErrorActionPreference = "Continue"
-          & cmd /c "$env:GITHUB_WORKSPACE/.ci/test_windows.ps1 2>&1"
+          set COMPILER="${{ matrix.compiler }}"
+          set BUILD_SOURCESDIRECTORY=%GITHUB_WORKSPACE%
+          powershell.exe -ExecutionPolicy Bypass -File %GITHUB_WORKSPACE%/.ci/test_windows.ps1
+
+
+# Write-Output "CI default for Errors: $ErrorActionPreference"
+# $ErrorActionPreference = "Continue"
 
 # links
 # * https://help.github.com/en/actions/reference/workflow-syntax-for-github-actions#jobsjob_iddefaultsrun

From fefa2ab8931e3d105fa14d88a10dd7f6a5e44789 Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Sat, 23 May 2020 00:36:12 -0500
Subject: [PATCH 57/95] cmon now

---
 .github/workflows/main.yml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 566e127afa38..fe8cb6778048 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -79,10 +79,9 @@ jobs:
         run: conda init powershell
       - name: Setup and run tests on Windows
         if: matrix.os == 'windows-latest'
-        shell: pwsh
+        shell: cmd
         env:
           GITHUB_ACTIONS: "true"
-          TASK: "r-package"
         # https://stackoverflow.com/questions/2095088/error-when-calling-3rd-party-executable-from-powershell-when-using-an-ide
         # https://stackoverflow.com/a/11826589/3986677
         # run: |
@@ -94,6 +93,7 @@ jobs:
         run: |
           set COMPILER="${{ matrix.compiler }}"
           set BUILD_SOURCESDIRECTORY=%GITHUB_WORKSPACE%
+          set TASK="{{ matrix.task }}"
           powershell.exe -ExecutionPolicy Bypass -File %GITHUB_WORKSPACE%/.ci/test_windows.ps1
 
 

From b4a2325377087ad276942489352171f604a0db0f Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Sat, 23 May 2020 00:42:45 -0500
Subject: [PATCH 58/95] ok so

---
 .github/workflows/main.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index fe8cb6778048..91871155adf0 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -93,7 +93,7 @@ jobs:
         run: |
           set COMPILER="${{ matrix.compiler }}"
           set BUILD_SOURCESDIRECTORY=%GITHUB_WORKSPACE%
-          set TASK="{{ matrix.task }}"
+          set TASK="${{ matrix.task }}"
           powershell.exe -ExecutionPolicy Bypass -File %GITHUB_WORKSPACE%/.ci/test_windows.ps1
 
 

From 0d042898b16c706412aeab2df514d61f3155db95 Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Sat, 23 May 2020 00:49:53 -0500
Subject: [PATCH 59/95] fixing env variables

---
 .github/workflows/main.yml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 91871155adf0..5cc13999ddb0 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -81,7 +81,9 @@ jobs:
         if: matrix.os == 'windows-latest'
         shell: cmd
         env:
+          COMPILER: "${{ matrix.compiler }}"
           GITHUB_ACTIONS: "true"
+          TASK: "${{ matrix.task }}"
         # https://stackoverflow.com/questions/2095088/error-when-calling-3rd-party-executable-from-powershell-when-using-an-ide
         # https://stackoverflow.com/a/11826589/3986677
         # run: |
@@ -91,9 +93,7 @@ jobs:
         #   $env:BUILD_SOURCESDIRECTORY = $env:GITHUB_WORKSPACE
         #   cmd /c "$env:GITHUB_WORKSPACE/.ci/test_windows.ps1"
         run: |
-          set COMPILER="${{ matrix.compiler }}"
           set BUILD_SOURCESDIRECTORY=%GITHUB_WORKSPACE%
-          set TASK="${{ matrix.task }}"
           powershell.exe -ExecutionPolicy Bypass -File %GITHUB_WORKSPACE%/.ci/test_windows.ps1
 
 

From 294c32c8b65f4aa47d016f4a41ccc0054144f62a Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Sat, 23 May 2020 21:18:09 -0500
Subject: [PATCH 60/95] maybe this

---
 .github/workflows/main.yml | 33 ++++++++++++++++++++-------------
 1 file changed, 20 insertions(+), 13 deletions(-)

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 5cc13999ddb0..c6797dd6d4de 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -10,16 +10,16 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - os: ubuntu-latest
-            task: r-package
-            subtitle: ""
-          - os: macOS-latest
-            task: r-package
-            subtitle: ""
-          - os: windows-latest
-            task: r-package
-            compiler: MINGW
-            subtitle: MINGW
+          # - os: ubuntu-latest
+          #   task: r-package
+          #   subtitle: ""
+          # - os: macOS-latest
+          #   task: r-package
+          #   subtitle: ""
+          # - os: windows-latest
+          #   task: r-package
+          #   compiler: MINGW
+          #   subtitle: MINGW
           - os: windows-latest
             task: r-package
             compiler: MSVC
@@ -79,7 +79,7 @@ jobs:
         run: conda init powershell
       - name: Setup and run tests on Windows
         if: matrix.os == 'windows-latest'
-        shell: cmd
+        shell: pwsh
         env:
           COMPILER: "${{ matrix.compiler }}"
           GITHUB_ACTIONS: "true"
@@ -93,9 +93,14 @@ jobs:
         #   $env:BUILD_SOURCESDIRECTORY = $env:GITHUB_WORKSPACE
         #   cmd /c "$env:GITHUB_WORKSPACE/.ci/test_windows.ps1"
         run: |
-          set BUILD_SOURCESDIRECTORY=%GITHUB_WORKSPACE%
-          powershell.exe -ExecutionPolicy Bypass -File %GITHUB_WORKSPACE%/.ci/test_windows.ps1
+          if ("${{ matrix.compiler }}" -ne "") {
+            $env:COMPILER = "${{ matrix.compiler }}"
+          }
+          $env:BUILD_SOURCESDIRECTORY = $env:GITHUB_WORKSPACE
+          & "$env:GITHUB_WORKSPACE/.ci/test_windows.ps1"
 
+# set BUILD_SOURCESDIRECTORY=%GITHUB_WORKSPACE%
+# powershell.exe -ExecutionPolicy Bypass -File %GITHUB_WORKSPACE%/.ci/test_windows.ps1
 
 # Write-Output "CI default for Errors: $ErrorActionPreference"
 # $ErrorActionPreference = "Continue"
@@ -107,3 +112,5 @@ jobs:
 # * https://github.com/marketplace/actions/setup-miniconda
 # * https://help.github.com/en/actions/reference/virtual-environments-for-github-hosted-runners#supported-runners-and-hardware-resources
 # * https://github.com/actions/virtual-environments/blob/master/images/win/Windows2019-Readme.md
+# * https://stackoverflow.com/questions/2095088/error-when-calling-3rd-party-executable-from-powershell-when-using-an-ide/2095623#2095623
+# 

From 8918cb3c5896a87bf083c2f11fa38d584f8f063d Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Sat, 23 May 2020 21:27:12 -0500
Subject: [PATCH 61/95] MINGW job

---
 .github/workflows/main.yml | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index c6797dd6d4de..61fcfec70155 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -16,16 +16,16 @@ jobs:
           # - os: macOS-latest
           #   task: r-package
           #   subtitle: ""
-          # - os: windows-latest
-          #   task: r-package
-          #   compiler: MINGW
-          #   subtitle: MINGW
+          - os: windows-latest
+            task: r-package
+            compiler: MINGW
+            subtitle: MINGW
           - os: windows-latest
             task: r-package
             compiler: MSVC
             subtitle: MSVC
-          - os: ubuntu-latest
-            task: lint
+          # - os: ubuntu-latest
+          #   task: lint
     steps:
       - name: Checkout repository
         uses: actions/checkout@v1

From cf2b7840e44a1716645e7010d79b0e2fd0ed70b2 Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Sat, 23 May 2020 21:38:24 -0500
Subject: [PATCH 62/95] cleaning up

---
 .github/workflows/main.yml | 30 +++++++++++-------------------
 1 file changed, 11 insertions(+), 19 deletions(-)

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 61fcfec70155..e6e7f528ce23 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -24,17 +24,25 @@ jobs:
             task: r-package
             compiler: MSVC
             subtitle: MSVC
-          # - os: ubuntu-latest
-          #   task: lint
+          - os: ubuntu-latest
+            task: lint
     steps:
       - name: Checkout repository
         uses: actions/checkout@v1
         with:
-          fetch-depth: 1
+          fetch-depth: 5
           submodules: true
       - name: Setup and run tests on Linux and macOS
         if: matrix.os != 'windows-latest'
         shell: bash
+        # export AMDAPPSDK_PATH=$HOME/AMDAPPSDK
+        # export LD_LIBRARY_PATH="$AMDAPPSDK_PATH/lib/x86_64:$LD_LIBRARY_PATH"
+        # export HOME_DIRECTORY="$HOME"
+        env:
+          COMPILER: "${{ matrix.compiler }}"
+          CONDA_ENV: "test-env"
+          GITHUB_ACTIONS: "true"
+          TASK: "${{ matrix.task }}"
         run: |
           if [[ "${{ matrix.os }}" == "macOS-latest" ]]; then
               export OS_NAME="macos"
@@ -48,23 +56,10 @@ jobs:
           if [ -z ${{ matrix.compiler }} ]; then
               export COMPILER=${{ matrix.compiler }}
           fi
-          export TASK="${{ matrix.task }}"
-          export HOME_DIRECTORY="$HOME"
           export BUILD_DIRECTORY="$GITHUB_WORKSPACE"
-          if [[ "${{ matrix.os }}" == "macOS-latest" ]]; then
-              export OS_NAME="macos"
-              export COMPILER="gcc"
-          elif [[ "${{ matrix.os }}" == "ubuntu-latest" ]]; then
-              export OS_NAME="linux"
-              export COMPILER="clang"
-          fi
-          export GITHUB_ACTIONS="true"
           export CONDA="$HOME/miniconda"
           export PATH="$CONDA/bin:${HOME}/.local/bin:$PATH"
-          export CONDA_ENV="test-env"
           export LGB_VER=$(head -n 1 VERSION.txt)
-          export AMDAPPSDK_PATH=$HOME/AMDAPPSDK
-          export LD_LIBRARY_PATH="$AMDAPPSDK_PATH/lib/x86_64:$LD_LIBRARY_PATH"
           $GITHUB_WORKSPACE/.ci/setup.sh
           $GITHUB_WORKSPACE/.ci/test.sh
       #  https://github.com/marketplace/actions/setup-miniconda
@@ -93,9 +88,6 @@ jobs:
         #   $env:BUILD_SOURCESDIRECTORY = $env:GITHUB_WORKSPACE
         #   cmd /c "$env:GITHUB_WORKSPACE/.ci/test_windows.ps1"
         run: |
-          if ("${{ matrix.compiler }}" -ne "") {
-            $env:COMPILER = "${{ matrix.compiler }}"
-          }
           $env:BUILD_SOURCESDIRECTORY = $env:GITHUB_WORKSPACE
           & "$env:GITHUB_WORKSPACE/.ci/test_windows.ps1"
 

From ff365e01b80b2441faffab184e8f65da3d6bbb0e Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Sat, 23 May 2020 21:48:48 -0500
Subject: [PATCH 63/95] conda init powershell

---
 .github/workflows/main.yml | 31 +++++++++----------------------
 1 file changed, 9 insertions(+), 22 deletions(-)

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index e6e7f528ce23..7ef095d475b0 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -10,9 +10,9 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          # - os: ubuntu-latest
-          #   task: r-package
-          #   subtitle: ""
+          - os: ubuntu-latest
+            task: r-package
+            subtitle: ""
           # - os: macOS-latest
           #   task: r-package
           #   subtitle: ""
@@ -35,9 +35,6 @@ jobs:
       - name: Setup and run tests on Linux and macOS
         if: matrix.os != 'windows-latest'
         shell: bash
-        # export AMDAPPSDK_PATH=$HOME/AMDAPPSDK
-        # export LD_LIBRARY_PATH="$AMDAPPSDK_PATH/lib/x86_64:$LD_LIBRARY_PATH"
-        # export HOME_DIRECTORY="$HOME"
         env:
           COMPILER: "${{ matrix.compiler }}"
           CONDA_ENV: "test-env"
@@ -68,10 +65,10 @@ jobs:
         uses: goanpeca/setup-miniconda@v1
         with:
           auto-update-conda: false
-      - name: conda init powershell
-        if: matrix.os == 'windows-latest'
-        shell: cmd
-        run: conda init powershell
+      # - name: conda init powershell
+      #   if: matrix.os == 'windows-latest'
+      #   shell: cmd
+      #   run: conda init powershell
       - name: Setup and run tests on Windows
         if: matrix.os == 'windows-latest'
         shell: pwsh
@@ -79,24 +76,14 @@ jobs:
           COMPILER: "${{ matrix.compiler }}"
           GITHUB_ACTIONS: "true"
           TASK: "${{ matrix.task }}"
-        # https://stackoverflow.com/questions/2095088/error-when-calling-3rd-party-executable-from-powershell-when-using-an-ide
-        # https://stackoverflow.com/a/11826589/3986677
-        # run: |
-        #   if ("${{ matrix.compiler }}" -ne "") {
-        #     $env:COMPILER = "${{ matrix.compiler }}"
-        #   }
-        #   $env:BUILD_SOURCESDIRECTORY = $env:GITHUB_WORKSPACE
-        #   cmd /c "$env:GITHUB_WORKSPACE/.ci/test_windows.ps1"
         run: |
           $env:BUILD_SOURCESDIRECTORY = $env:GITHUB_WORKSPACE
+          conda init powershell
           & "$env:GITHUB_WORKSPACE/.ci/test_windows.ps1"
 
 # set BUILD_SOURCESDIRECTORY=%GITHUB_WORKSPACE%
 # powershell.exe -ExecutionPolicy Bypass -File %GITHUB_WORKSPACE%/.ci/test_windows.ps1
 
-# Write-Output "CI default for Errors: $ErrorActionPreference"
-# $ErrorActionPreference = "Continue"
-
 # links
 # * https://help.github.com/en/actions/reference/workflow-syntax-for-github-actions#jobsjob_iddefaultsrun
 # * https://help.github.com/en/actions/reference/virtual-environments-for-github-hosted-runners
@@ -105,4 +92,4 @@ jobs:
 # * https://help.github.com/en/actions/reference/virtual-environments-for-github-hosted-runners#supported-runners-and-hardware-resources
 # * https://github.com/actions/virtual-environments/blob/master/images/win/Windows2019-Readme.md
 # * https://stackoverflow.com/questions/2095088/error-when-calling-3rd-party-executable-from-powershell-when-using-an-ide/2095623#2095623
-# 
+# * https://stackoverflow.com/a/11826589/3986677

From 0454738d75ded0342e3f6ad948a7af208572841b Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Sat, 23 May 2020 22:04:08 -0500
Subject: [PATCH 64/95] moving more R stuff into GitHub Actions

---
 .github/workflows/main.yml | 31 ++++++++++++++++---------------
 .travis.yml                |  3 ---
 .vsts-ci.yml               |  6 +-----
 3 files changed, 17 insertions(+), 23 deletions(-)

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 7ef095d475b0..b3312dd709a5 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -12,10 +12,20 @@ jobs:
         include:
           - os: ubuntu-latest
             task: r-package
-            subtitle: ""
-          # - os: macOS-latest
-          #   task: r-package
-          #   subtitle: ""
+            compiler: gcc
+            subtitle: gcc
+          - os: ubuntu-latest
+            task: r-package
+            compiler: clang
+            subtitle: clang
+          - os: macOS-latest
+            task: r-package
+            compiler: gcc
+            subtitle: gcc
+          - os: macOS-latest
+            task: r-package
+            compiler: clang
+            subtitle: clang
           - os: windows-latest
             task: r-package
             compiler: MINGW
@@ -43,11 +53,9 @@ jobs:
         run: |
           if [[ "${{ matrix.os }}" == "macOS-latest" ]]; then
               export OS_NAME="macos"
-              export COMPILER="gcc"
               export R_MAC_VERSION=3.6.3
           elif [[ "${{ matrix.os }}" == "ubuntu-latest" ]]; then
               export OS_NAME="linux"
-              export COMPILER="clang"
               export R_TRAVIS_LINUX_VERSION=3.6.3-1bionic;
           fi
           if [ -z ${{ matrix.compiler }} ]; then
@@ -59,16 +67,11 @@ jobs:
           export LGB_VER=$(head -n 1 VERSION.txt)
           $GITHUB_WORKSPACE/.ci/setup.sh
           $GITHUB_WORKSPACE/.ci/test.sh
-      #  https://github.com/marketplace/actions/setup-miniconda
       - name: Use conda on Windows
         if: matrix.os == 'windows-latest'
         uses: goanpeca/setup-miniconda@v1
         with:
           auto-update-conda: false
-      # - name: conda init powershell
-      #   if: matrix.os == 'windows-latest'
-      #   shell: cmd
-      #   run: conda init powershell
       - name: Setup and run tests on Windows
         if: matrix.os == 'windows-latest'
         shell: pwsh
@@ -79,10 +82,7 @@ jobs:
         run: |
           $env:BUILD_SOURCESDIRECTORY = $env:GITHUB_WORKSPACE
           conda init powershell
-          & "$env:GITHUB_WORKSPACE/.ci/test_windows.ps1"
-
-# set BUILD_SOURCESDIRECTORY=%GITHUB_WORKSPACE%
-# powershell.exe -ExecutionPolicy Bypass -File %GITHUB_WORKSPACE%/.ci/test_windows.ps1
+          & "$env:GITHUB_WORKSPACE/.ci/test_windows.ps1 2&>1"
 
 # links
 # * https://help.github.com/en/actions/reference/workflow-syntax-for-github-actions#jobsjob_iddefaultsrun
@@ -93,3 +93,4 @@ jobs:
 # * https://github.com/actions/virtual-environments/blob/master/images/win/Windows2019-Readme.md
 # * https://stackoverflow.com/questions/2095088/error-when-calling-3rd-party-executable-from-powershell-when-using-an-ide/2095623#2095623
 # * https://stackoverflow.com/a/11826589/3986677
+# * https://github.com/marketplace/actions/setup-miniconda
diff --git a/.travis.yml b/.travis.yml
index a00b250660b5..202e54a148d2 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -23,7 +23,6 @@ env:
     - TASK=mpi METHOD=pip PYTHON_VERSION=3.7
     - TASK=gpu METHOD=source PYTHON_VERSION=3.5
     - TASK=gpu METHOD=pip PYTHON_VERSION=3.6
-    - TASK=r-package
 
 matrix:
   exclude:
@@ -31,8 +30,6 @@ matrix:
       env: TASK=gpu METHOD=source PYTHON_VERSION=3.5
     - os: osx
       env: TASK=gpu METHOD=pip PYTHON_VERSION=3.6
-    - os: osx
-      env: TASK=lint
     - os: osx
       env: TASK=check-docs
 
diff --git a/.vsts-ci.yml b/.vsts-ci.yml
index 906165d89a4d..0ae2ea8dcb2f 100644
--- a/.vsts-ci.yml
+++ b/.vsts-ci.yml
@@ -41,8 +41,6 @@ jobs:
         TASK: gpu
         METHOD: source
         PYTHON_VERSION: 3.6
-      r_package:
-        TASK: r-package
   steps:
   - script: |
       echo "##vso[task.setvariable variable=BUILD_DIRECTORY]$BUILD_SOURCESDIRECTORY"
@@ -74,7 +72,7 @@ jobs:
   pool:
     vmImage: 'macOS-10.14'
   strategy:
-    maxParallel: 4
+    maxParallel: 3
     matrix:
       regular:
         TASK: regular
@@ -84,8 +82,6 @@ jobs:
         PYTHON_VERSION: 3.5
       bdist:
         TASK: bdist
-      r_package:
-        TASK: r-package
   steps:
   - script: |
       echo "##vso[task.setvariable variable=BUILD_DIRECTORY]$BUILD_SOURCESDIRECTORY"

From e6230fa55400b8096ae9935e209951610f0a7e5d Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Sat, 23 May 2020 22:14:47 -0500
Subject: [PATCH 65/95] everything else

---
 .github/workflows/main.yml | 2 +-
 .travis.yml                | 2 --
 .vsts-ci.yml               | 3 +--
 3 files changed, 2 insertions(+), 5 deletions(-)

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index b3312dd709a5..e39ba68a886e 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -82,7 +82,7 @@ jobs:
         run: |
           $env:BUILD_SOURCESDIRECTORY = $env:GITHUB_WORKSPACE
           conda init powershell
-          & "$env:GITHUB_WORKSPACE/.ci/test_windows.ps1 2&>1"
+          & "$env:GITHUB_WORKSPACE/.ci/test_windows.ps1"
 
 # links
 # * https://help.github.com/en/actions/reference/workflow-syntax-for-github-actions#jobsjob_iddefaultsrun
diff --git a/.travis.yml b/.travis.yml
index 202e54a148d2..eb05a901572e 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -40,11 +40,9 @@ before_install:
   - if [[ $TRAVIS_OS_NAME == "osx" ]]; then
         export OS_NAME="macos";
         export COMPILER="gcc";
-        export R_MAC_VERSION=3.6.3;
     else
         export OS_NAME="linux";
         export COMPILER="clang";
-        export R_TRAVIS_LINUX_VERSION=3.6.3-1bionic;
     fi
   - export CONDA="$HOME/miniconda"
   - export PATH="$CONDA/bin:$PATH"
diff --git a/.vsts-ci.yml b/.vsts-ci.yml
index 0ae2ea8dcb2f..7c4e71d2eb30 100644
--- a/.vsts-ci.yml
+++ b/.vsts-ci.yml
@@ -22,7 +22,7 @@ jobs:
     vmImage: 'ubuntu-latest'
   container: ubuntu1404
   strategy:
-    maxParallel: 7
+    maxParallel: 6
     matrix:
       regular:
         TASK: regular
@@ -92,7 +92,6 @@ jobs:
       echo "##vso[task.setvariable variable=CONDA]$CONDA"
       echo "##vso[task.prependpath]$CONDA/bin"
       echo "##vso[task.setvariable variable=JAVA_HOME]$JAVA_HOME_8_X64"
-      echo "##vso[task.setvariable variable=R_MAC_VERSION]3.6.3"
     displayName: 'Set variables'
   - bash: $(Build.SourcesDirectory)/.ci/setup.sh
     displayName: Setup

From 70e657ec3a068b488bb7a97f330d18017c718689 Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Sat, 23 May 2020 22:19:23 -0500
Subject: [PATCH 66/95] use powershell

---
 .github/workflows/main.yml | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index e39ba68a886e..2de780590be8 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -74,7 +74,7 @@ jobs:
           auto-update-conda: false
       - name: Setup and run tests on Windows
         if: matrix.os == 'windows-latest'
-        shell: pwsh
+        shell: powershell
         env:
           COMPILER: "${{ matrix.compiler }}"
           GITHUB_ACTIONS: "true"
@@ -94,3 +94,4 @@ jobs:
 # * https://stackoverflow.com/questions/2095088/error-when-calling-3rd-party-executable-from-powershell-when-using-an-ide/2095623#2095623
 # * https://stackoverflow.com/a/11826589/3986677
 # * https://github.com/marketplace/actions/setup-miniconda
+# * https://help.github.com/en/actions/reference/workflow-syntax-for-github-actions

From 19c7ac52194b7d786063fae7d9b4d907899d5a4c Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Sat, 23 May 2020 22:30:58 -0500
Subject: [PATCH 67/95] cmon now powershell

---
 .github/workflows/main.yml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 2de780590be8..a94cc1cf762c 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -80,6 +80,7 @@ jobs:
           GITHUB_ACTIONS: "true"
           TASK: "${{ matrix.task }}"
         run: |
+          $ErrorActionPreference = "Continue"
           $env:BUILD_SOURCESDIRECTORY = $env:GITHUB_WORKSPACE
           conda init powershell
           & "$env:GITHUB_WORKSPACE/.ci/test_windows.ps1"

From b5aceda275501c39f495bc62db669ad4d23053dc Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Sat, 23 May 2020 22:53:26 -0500
Subject: [PATCH 68/95] ttry to Continue

---
 .ci/test_r_package_windows.ps1 | 4 ++++
 .github/workflows/main.yml     | 4 ++--
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/.ci/test_r_package_windows.ps1 b/.ci/test_r_package_windows.ps1
index 966cc3dc0e91..a0d1b8ca175d 100644
--- a/.ci/test_r_package_windows.ps1
+++ b/.ci/test_r_package_windows.ps1
@@ -12,6 +12,10 @@ function Download-File-With-Retries {
   } while(!$?);
 }
 
+# GitHub Actions puts $ErrorActionPreference = 'stop' on the top of powershell scripts,
+# which causes the script to fail if anything is written to stderr
+$ErrorActionPreference = "Continue"
+
 $env:R_WINDOWS_VERSION = "3.6.3"
 $env:R_LIB_PATH = "$env:BUILD_SOURCESDIRECTORY/RLibrary" -replace '[\\]', '/'
 $env:R_LIBS = "$env:R_LIB_PATH"
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index a94cc1cf762c..6c2fd6dfd888 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -74,13 +74,12 @@ jobs:
           auto-update-conda: false
       - name: Setup and run tests on Windows
         if: matrix.os == 'windows-latest'
-        shell: powershell
+        shell: pwsh
         env:
           COMPILER: "${{ matrix.compiler }}"
           GITHUB_ACTIONS: "true"
           TASK: "${{ matrix.task }}"
         run: |
-          $ErrorActionPreference = "Continue"
           $env:BUILD_SOURCESDIRECTORY = $env:GITHUB_WORKSPACE
           conda init powershell
           & "$env:GITHUB_WORKSPACE/.ci/test_windows.ps1"
@@ -96,3 +95,4 @@ jobs:
 # * https://stackoverflow.com/a/11826589/3986677
 # * https://github.com/marketplace/actions/setup-miniconda
 # * https://help.github.com/en/actions/reference/workflow-syntax-for-github-actions
+# * see "fail-fast behavior" in https://help.github.com/en/actions/reference/workflow-syntax-for-github-actions

From 66c15a171a983caad5853704dc4f587a540dad52 Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Sat, 23 May 2020 22:59:19 -0500
Subject: [PATCH 69/95] override powershell

---
 .ci/test_r_package_windows.ps1 | 4 ----
 .github/workflows/main.yml     | 2 +-
 2 files changed, 1 insertion(+), 5 deletions(-)

diff --git a/.ci/test_r_package_windows.ps1 b/.ci/test_r_package_windows.ps1
index a0d1b8ca175d..966cc3dc0e91 100644
--- a/.ci/test_r_package_windows.ps1
+++ b/.ci/test_r_package_windows.ps1
@@ -12,10 +12,6 @@ function Download-File-With-Retries {
   } while(!$?);
 }
 
-# GitHub Actions puts $ErrorActionPreference = 'stop' on the top of powershell scripts,
-# which causes the script to fail if anything is written to stderr
-$ErrorActionPreference = "Continue"
-
 $env:R_WINDOWS_VERSION = "3.6.3"
 $env:R_LIB_PATH = "$env:BUILD_SOURCESDIRECTORY/RLibrary" -replace '[\\]', '/'
 $env:R_LIBS = "$env:R_LIB_PATH"
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 6c2fd6dfd888..07a7be58b8bf 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -74,7 +74,7 @@ jobs:
           auto-update-conda: false
       - name: Setup and run tests on Windows
         if: matrix.os == 'windows-latest'
-        shell: pwsh
+        shell: pwsh -File {0}
         env:
           COMPILER: "${{ matrix.compiler }}"
           GITHUB_ACTIONS: "true"

From cd3f72c8c6b328554f459bc23f9ec471721cdeb0 Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Sat, 23 May 2020 23:33:55 -0500
Subject: [PATCH 70/95] peg MiKTeX URL

---
 .ci/test_r_package_windows.ps1 | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/.ci/test_r_package_windows.ps1 b/.ci/test_r_package_windows.ps1
index 966cc3dc0e91..50a0ba38b099 100644
--- a/.ci/test_r_package_windows.ps1
+++ b/.ci/test_r_package_windows.ps1
@@ -18,6 +18,7 @@ $env:R_LIBS = "$env:R_LIB_PATH"
 $env:PATH = "$env:R_LIB_PATH/Rtools/bin;" + "$env:R_LIB_PATH/R/bin/x64;" + "$env:R_LIB_PATH/miktex/texmfs/install/miktex/bin/x64;" + $env:PATH
 $env:CRAN_MIRROR = "https://cloud.r-project.org/"
 $env:CTAN_MIRROR = "https://ctan.math.illinois.edu/systems/win32/miktex/tm/packages/"
+$env:MIKTEX_ZIP = "https://ctan.math.illinois.edu/systems/win32/miktex/setup/windows-x64/miktexsetup-2.9.7442-x64.zip"
 
 if ($env:COMPILER -eq "MINGW") {
   $env:CXX = "$env:R_LIB_PATH/Rtools/mingw_64/bin/g++.exe"
@@ -52,7 +53,7 @@ Write-Output "Done installing Rtools"
 # build the package documentation for those
 if ($env:COMPILER -eq "MINGW") {
     Write-Output "Downloading MiKTeX"
-    Download-File-With-Retries -url "https://miktex.org/download/win/miktexsetup-x64.zip" -destfile "miktexsetup-x64.zip"
+    Download-File-With-Retries -url "$env:MIKTEX_ZIP" -destfile "miktexsetup-x64.zip"
     Add-Type -AssemblyName System.IO.Compression.FileSystem
     [System.IO.Compression.ZipFile]::ExtractToDirectory("miktexsetup-x64.zip", "miktex")
     Write-Output "Setting up MiKTeX"

From 8aa0b125095468bb70588226e3f764e4fce08b19 Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Sun, 24 May 2020 00:05:20 -0500
Subject: [PATCH 71/95] what is happening

---
 .ci/test_r_package_windows.ps1 |  2 ++
 .github/workflows/main.yml     | 44 +++++++++++++++++-----------------
 2 files changed, 24 insertions(+), 22 deletions(-)

diff --git a/.ci/test_r_package_windows.ps1 b/.ci/test_r_package_windows.ps1
index 50a0ba38b099..16ba76ecaefc 100644
--- a/.ci/test_r_package_windows.ps1
+++ b/.ci/test_r_package_windows.ps1
@@ -96,6 +96,8 @@ if ($env:COMPILER -ne "MSVC") {
   }
 
   $note_str = Get-Content "${LOG_FILE_NAME}" | Select-String -Pattern ' NOTE' | Out-String ; Check-Output $?
+  Write-Output "note_str:"
+  Write-Output $note_str
   $relevant_line = $note_str -match '.*Status: (\d+) NOTE.*'
   $NUM_CHECK_NOTES = $matches[1]
   $ALLOWED_CHECK_NOTES = 3
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 07a7be58b8bf..a985a97da671 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -10,32 +10,32 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - os: ubuntu-latest
-            task: r-package
-            compiler: gcc
-            subtitle: gcc
-          - os: ubuntu-latest
-            task: r-package
-            compiler: clang
-            subtitle: clang
-          - os: macOS-latest
-            task: r-package
-            compiler: gcc
-            subtitle: gcc
-          - os: macOS-latest
-            task: r-package
-            compiler: clang
-            subtitle: clang
+          # - os: ubuntu-latest
+          #   task: r-package
+          #   compiler: gcc
+          #   subtitle: gcc
+          # - os: ubuntu-latest
+          #   task: r-package
+          #   compiler: clang
+          #   subtitle: clang
+          # - os: macOS-latest
+          #   task: r-package
+          #   compiler: gcc
+          #   subtitle: gcc
+          # - os: macOS-latest
+          #   task: r-package
+          #   compiler: clang
+          #   subtitle: clang
           - os: windows-latest
             task: r-package
             compiler: MINGW
             subtitle: MINGW
-          - os: windows-latest
-            task: r-package
-            compiler: MSVC
-            subtitle: MSVC
-          - os: ubuntu-latest
-            task: lint
+          # - os: windows-latest
+          #   task: r-package
+          #   compiler: MSVC
+          #   subtitle: MSVC
+          # - os: ubuntu-latest
+          #   task: lint
     steps:
       - name: Checkout repository
         uses: actions/checkout@v1

From 0cf69133d2c06c939886eb6bfe7f9aed62a28721 Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Sun, 24 May 2020 17:32:12 -0500
Subject: [PATCH 72/95] try powershell -File

---
 .github/workflows/main.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index a985a97da671..da80eceaf265 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -74,7 +74,7 @@ jobs:
           auto-update-conda: false
       - name: Setup and run tests on Windows
         if: matrix.os == 'windows-latest'
-        shell: pwsh -File {0}
+        shell: powershell -File {0}
         env:
           COMPILER: "${{ matrix.compiler }}"
           GITHUB_ACTIONS: "true"

From 68de8ad12efc607ab66d3b34718ab5c1e5ca2e31 Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Sun, 24 May 2020 17:39:50 -0500
Subject: [PATCH 73/95] trying stuff

---
 .ci/test_r_package_windows.ps1 | 6 ++++++
 .github/workflows/main.yml     | 2 +-
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/.ci/test_r_package_windows.ps1 b/.ci/test_r_package_windows.ps1
index 16ba76ecaefc..5cef5dd98f30 100644
--- a/.ci/test_r_package_windows.ps1
+++ b/.ci/test_r_package_windows.ps1
@@ -98,6 +98,12 @@ if ($env:COMPILER -ne "MSVC") {
   $note_str = Get-Content "${LOG_FILE_NAME}" | Select-String -Pattern ' NOTE' | Out-String ; Check-Output $?
   Write-Output "note_str:"
   Write-Output $note_str
+  $stuff = Get-Content "${LOG_FILE_NAME}"
+  Write-Output "---- stuff ----"
+  Write-Output $stuff
+  $stuff2 = Get-Content -Path "${LOG_FILE_NAME}"
+  Write-Output "---- stuff2 ----"
+  Write-Output $stuff2
   $relevant_line = $note_str -match '.*Status: (\d+) NOTE.*'
   $NUM_CHECK_NOTES = $matches[1]
   $ALLOWED_CHECK_NOTES = 3
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index da80eceaf265..a985a97da671 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -74,7 +74,7 @@ jobs:
           auto-update-conda: false
       - name: Setup and run tests on Windows
         if: matrix.os == 'windows-latest'
-        shell: powershell -File {0}
+        shell: pwsh -File {0}
         env:
           COMPILER: "${{ matrix.compiler }}"
           GITHUB_ACTIONS: "true"

From b85213c1d5358421f01ae2b79791ab1a985142f3 Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Sun, 24 May 2020 18:41:47 -0500
Subject: [PATCH 74/95] path

---
 .ci/test_r_package_windows.ps1 | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.ci/test_r_package_windows.ps1 b/.ci/test_r_package_windows.ps1
index 5cef5dd98f30..72028534b00a 100644
--- a/.ci/test_r_package_windows.ps1
+++ b/.ci/test_r_package_windows.ps1
@@ -95,7 +95,7 @@ if ($env:COMPILER -ne "MSVC") {
       Check-Output $False
   }
 
-  $note_str = Get-Content "${LOG_FILE_NAME}" | Select-String -Pattern ' NOTE' | Out-String ; Check-Output $?
+  $note_str = Get-Content -Path "${LOG_FILE_NAME}" | Select-String -Pattern ' NOTE' | Out-String ; Check-Output $?
   Write-Output "note_str:"
   Write-Output $note_str
   $stuff = Get-Content "${LOG_FILE_NAME}"

From f6469bf1e855f9aa12a36b1b6fc2135702a66f94 Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Sun, 24 May 2020 19:21:05 -0500
Subject: [PATCH 75/95] more testing of output

---
 .ci/test_r_package_windows.ps1 | 4 +++-
 .github/workflows/main.yml     | 2 ++
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/.ci/test_r_package_windows.ps1 b/.ci/test_r_package_windows.ps1
index 72028534b00a..dabe63f356d6 100644
--- a/.ci/test_r_package_windows.ps1
+++ b/.ci/test_r_package_windows.ps1
@@ -101,10 +101,12 @@ if ($env:COMPILER -ne "MSVC") {
   $stuff = Get-Content "${LOG_FILE_NAME}"
   Write-Output "---- stuff ----"
   Write-Output $stuff
-  $stuff2 = Get-Content -Path "${LOG_FILE_NAME}"
+  $stuff2 = Get-Content -Path "${LOG_FILE_NAME}" | Select-String -Pattern ' NOTE' | Out-String
   Write-Output "---- stuff2 ----"
   Write-Output $stuff2
   $relevant_line = $note_str -match '.*Status: (\d+) NOTE.*'
+  Write-Output "----- matches -----"
+  Write-Output $matches
   $NUM_CHECK_NOTES = $matches[1]
   $ALLOWED_CHECK_NOTES = 3
   if ([int]$NUM_CHECK_NOTES -gt $ALLOWED_CHECK_NOTES) {
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index a985a97da671..cb0efc1610bd 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -74,6 +74,8 @@ jobs:
           auto-update-conda: false
       - name: Setup and run tests on Windows
         if: matrix.os == 'windows-latest'
+        # have to use 'pwsh' because with 'powershell', anything writing to
+        # stderr causes the job to fail
         shell: pwsh -File {0}
         env:
           COMPILER: "${{ matrix.compiler }}"

From fe9a80c47c825c85fd4ca44ce4a098ecf4825169 Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Sun, 24 May 2020 19:56:07 -0500
Subject: [PATCH 76/95] Matches uppercase

---
 .ci/test_r_package_windows.ps1 | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/.ci/test_r_package_windows.ps1 b/.ci/test_r_package_windows.ps1
index dabe63f356d6..0afababf525f 100644
--- a/.ci/test_r_package_windows.ps1
+++ b/.ci/test_r_package_windows.ps1
@@ -98,8 +98,8 @@ if ($env:COMPILER -ne "MSVC") {
   $note_str = Get-Content -Path "${LOG_FILE_NAME}" | Select-String -Pattern ' NOTE' | Out-String ; Check-Output $?
   Write-Output "note_str:"
   Write-Output $note_str
-  $stuff = Get-Content "${LOG_FILE_NAME}"
   Write-Output "---- stuff ----"
+  $stuff = Get-Content "${LOG_FILE_NAME}"
   Write-Output $stuff
   $stuff2 = Get-Content -Path "${LOG_FILE_NAME}" | Select-String -Pattern ' NOTE' | Out-String
   Write-Output "---- stuff2 ----"
@@ -107,7 +107,10 @@ if ($env:COMPILER -ne "MSVC") {
   $relevant_line = $note_str -match '.*Status: (\d+) NOTE.*'
   Write-Output "----- matches -----"
   Write-Output $matches
-  $NUM_CHECK_NOTES = $matches[1]
+  Write-Output "----- Matches ----"
+  Write-Output $Matches
+  Write-Outpu "-----------"
+  $NUM_CHECK_NOTES = $Matches[1]
   $ALLOWED_CHECK_NOTES = 3
   if ([int]$NUM_CHECK_NOTES -gt $ALLOWED_CHECK_NOTES) {
       Write-Output "Found ${NUM_CHECK_NOTES} NOTEs from R CMD check. Only ${ALLOWED_CHECK_NOTES} are allowed"

From 58ad283196bee0e907677c740790765dfad41d31 Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Sun, 24 May 2020 21:21:46 -0500
Subject: [PATCH 77/95] more regex stuff

---
 .ci/test_r_package_windows.ps1 | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/.ci/test_r_package_windows.ps1 b/.ci/test_r_package_windows.ps1
index 0afababf525f..f8b9c07bce2e 100644
--- a/.ci/test_r_package_windows.ps1
+++ b/.ci/test_r_package_windows.ps1
@@ -95,22 +95,24 @@ if ($env:COMPILER -ne "MSVC") {
       Check-Output $False
   }
 
-  $note_str = Get-Content -Path "${LOG_FILE_NAME}" | Select-String -Pattern ' NOTE' | Out-String ; Check-Output $?
+  $note_str = Get-Content -Path "${LOG_FILE_NAME}" | Select-String -Pattern '.*Status.* NOTE' | Out-String ; Check-Output $?
   Write-Output "note_str:"
   Write-Output $note_str
   Write-Output "---- stuff ----"
   $stuff = Get-Content "${LOG_FILE_NAME}"
   Write-Output $stuff
-  $stuff2 = Get-Content -Path "${LOG_FILE_NAME}" | Select-String -Pattern ' NOTE' | Out-String
+  $stuff2 = Get-Content -Path "${LOG_FILE_NAME}" | Select-String -Pattern '.*Status.* NOTE' | Out-String
   Write-Output "---- stuff2 ----"
   Write-Output $stuff2
-  $relevant_line = $note_str -match '.*Status: (\d+) NOTE.*'
+  $relevant_line = $note_str -match '(\d+) NOTE'
   Write-Output "----- matches -----"
   Write-Output $matches
   Write-Output "----- Matches ----"
   Write-Output $Matches
-  Write-Outpu "-----------"
-  $NUM_CHECK_NOTES = $Matches[1]
+  Write-Output "-----------"
+  Write-Output "----- relevant_line -----"
+  Write-Output $relevant_line
+  $NUM_CHECK_NOTES = $matches[1]
   $ALLOWED_CHECK_NOTES = 3
   if ([int]$NUM_CHECK_NOTES -gt $ALLOWED_CHECK_NOTES) {
       Write-Output "Found ${NUM_CHECK_NOTES} NOTEs from R CMD check. Only ${ALLOWED_CHECK_NOTES} are allowed"

From 7af8130c6a35824ef5e7a2c66915c341f29e016a Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Sun, 24 May 2020 21:51:33 -0500
Subject: [PATCH 78/95] this is getting ridiculous

---
 .github/workflows/main.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index cb0efc1610bd..2d48e4dccffd 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -76,7 +76,7 @@ jobs:
         if: matrix.os == 'windows-latest'
         # have to use 'pwsh' because with 'powershell', anything writing to
         # stderr causes the job to fail
-        shell: pwsh -File {0}
+        shell: pwsh -NonInteractive -ExecutionPolicy Bypass -File {0}
         env:
           COMPILER: "${{ matrix.compiler }}"
           GITHUB_ACTIONS: "true"

From 295c7d08b51a66663f0ad2a487802b0e2689e69c Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Sun, 24 May 2020 21:56:52 -0500
Subject: [PATCH 79/95] back to powershell I guess

---
 .github/workflows/main.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 2d48e4dccffd..3336daffade9 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -76,7 +76,7 @@ jobs:
         if: matrix.os == 'windows-latest'
         # have to use 'pwsh' because with 'powershell', anything writing to
         # stderr causes the job to fail
-        shell: pwsh -NonInteractive -ExecutionPolicy Bypass -File {0}
+        shell: powershell -NonInteractive -ExecutionPolicy Bypass -File {0}
         env:
           COMPILER: "${{ matrix.compiler }}"
           GITHUB_ACTIONS: "true"

From 95b2ad580ee9a5b0228c81dd1efd0e1c18abd38e Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Sun, 24 May 2020 22:04:13 -0500
Subject: [PATCH 80/95] more commands

---
 .github/workflows/main.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 3336daffade9..a6534a0d9002 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -76,7 +76,7 @@ jobs:
         if: matrix.os == 'windows-latest'
         # have to use 'pwsh' because with 'powershell', anything writing to
         # stderr causes the job to fail
-        shell: powershell -NonInteractive -ExecutionPolicy Bypass -File {0}
+        shell: pwsh -NonInteractive -ExecutionPolicy Bypass -Command "& '{0}'"
         env:
           COMPILER: "${{ matrix.compiler }}"
           GITHUB_ACTIONS: "true"

From f6fc655cc22addec2ba8a077f8f560a7882414ab Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Sun, 24 May 2020 22:25:10 -0500
Subject: [PATCH 81/95] this might work

---
 .ci/test_r_package_windows.ps1 | 18 +-----------
 .github/workflows/main.yml     | 50 +++++++++++++++++-----------------
 2 files changed, 26 insertions(+), 42 deletions(-)

diff --git a/.ci/test_r_package_windows.ps1 b/.ci/test_r_package_windows.ps1
index f8b9c07bce2e..371eda68210d 100644
--- a/.ci/test_r_package_windows.ps1
+++ b/.ci/test_r_package_windows.ps1
@@ -18,7 +18,6 @@ $env:R_LIBS = "$env:R_LIB_PATH"
 $env:PATH = "$env:R_LIB_PATH/Rtools/bin;" + "$env:R_LIB_PATH/R/bin/x64;" + "$env:R_LIB_PATH/miktex/texmfs/install/miktex/bin/x64;" + $env:PATH
 $env:CRAN_MIRROR = "https://cloud.r-project.org/"
 $env:CTAN_MIRROR = "https://ctan.math.illinois.edu/systems/win32/miktex/tm/packages/"
-$env:MIKTEX_ZIP = "https://ctan.math.illinois.edu/systems/win32/miktex/setup/windows-x64/miktexsetup-2.9.7442-x64.zip"
 
 if ($env:COMPILER -eq "MINGW") {
   $env:CXX = "$env:R_LIB_PATH/Rtools/mingw_64/bin/g++.exe"
@@ -53,7 +52,7 @@ Write-Output "Done installing Rtools"
 # build the package documentation for those
 if ($env:COMPILER -eq "MINGW") {
     Write-Output "Downloading MiKTeX"
-    Download-File-With-Retries -url "$env:MIKTEX_ZIP" -destfile "miktexsetup-x64.zip"
+    Download-File-With-Retries -url "https://miktex.org/download/win/miktexsetup-x64.zip" -destfile "miktexsetup-x64.zip"
     Add-Type -AssemblyName System.IO.Compression.FileSystem
     [System.IO.Compression.ZipFile]::ExtractToDirectory("miktexsetup-x64.zip", "miktex")
     Write-Output "Setting up MiKTeX"
@@ -96,22 +95,7 @@ if ($env:COMPILER -ne "MSVC") {
   }
 
   $note_str = Get-Content -Path "${LOG_FILE_NAME}" | Select-String -Pattern '.*Status.* NOTE' | Out-String ; Check-Output $?
-  Write-Output "note_str:"
-  Write-Output $note_str
-  Write-Output "---- stuff ----"
-  $stuff = Get-Content "${LOG_FILE_NAME}"
-  Write-Output $stuff
-  $stuff2 = Get-Content -Path "${LOG_FILE_NAME}" | Select-String -Pattern '.*Status.* NOTE' | Out-String
-  Write-Output "---- stuff2 ----"
-  Write-Output $stuff2
   $relevant_line = $note_str -match '(\d+) NOTE'
-  Write-Output "----- matches -----"
-  Write-Output $matches
-  Write-Output "----- Matches ----"
-  Write-Output $Matches
-  Write-Output "-----------"
-  Write-Output "----- relevant_line -----"
-  Write-Output $relevant_line
   $NUM_CHECK_NOTES = $matches[1]
   $ALLOWED_CHECK_NOTES = 3
   if ([int]$NUM_CHECK_NOTES -gt $ALLOWED_CHECK_NOTES) {
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index a6534a0d9002..55e9501a6a31 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -10,32 +10,32 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          # - os: ubuntu-latest
-          #   task: r-package
-          #   compiler: gcc
-          #   subtitle: gcc
-          # - os: ubuntu-latest
-          #   task: r-package
-          #   compiler: clang
-          #   subtitle: clang
-          # - os: macOS-latest
-          #   task: r-package
-          #   compiler: gcc
-          #   subtitle: gcc
-          # - os: macOS-latest
-          #   task: r-package
-          #   compiler: clang
-          #   subtitle: clang
+          - os: ubuntu-latest
+            task: r-package
+            compiler: gcc
+            subtitle: gcc
+          - os: ubuntu-latest
+            task: r-package
+            compiler: clang
+            subtitle: clang
+          - os: macOS-latest
+            task: r-package
+            compiler: gcc
+            subtitle: gcc
+          - os: macOS-latest
+            task: r-package
+            compiler: clang
+            subtitle: clang
           - os: windows-latest
             task: r-package
             compiler: MINGW
             subtitle: MINGW
-          # - os: windows-latest
-          #   task: r-package
-          #   compiler: MSVC
-          #   subtitle: MSVC
-          # - os: ubuntu-latest
-          #   task: lint
+          - os: windows-latest
+            task: r-package
+            compiler: MSVC
+            subtitle: MSVC
+          - os: ubuntu-latest
+            task: lint
     steps:
       - name: Checkout repository
         uses: actions/checkout@v1
@@ -74,8 +74,8 @@ jobs:
           auto-update-conda: false
       - name: Setup and run tests on Windows
         if: matrix.os == 'windows-latest'
-        # have to use 'pwsh' because with 'powershell', anything writing to
-        # stderr causes the job to fail
+        # have to use this explicit command to override the GitHub Actions
+        # default, where any command writing to stderr causes build failures
         shell: pwsh -NonInteractive -ExecutionPolicy Bypass -Command "& '{0}'"
         env:
           COMPILER: "${{ matrix.compiler }}"
@@ -86,7 +86,7 @@ jobs:
           conda init powershell
           & "$env:GITHUB_WORKSPACE/.ci/test_windows.ps1"
 
-# links
+# references
 # * https://help.github.com/en/actions/reference/workflow-syntax-for-github-actions#jobsjob_iddefaultsrun
 # * https://help.github.com/en/actions/reference/virtual-environments-for-github-hosted-runners
 # * https://help.github.com/en/actions/reference/workflow-commands-for-github-actions#setting-an-environment-variable

From 3ebeccd72d3f9f03cb650bf1e33a0ed4c19b5eb6 Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Sun, 24 May 2020 23:14:08 -0500
Subject: [PATCH 82/95] adding more reliable miktex download

---
 .ci/download-miktex.R          | 25 +++++++++++++++++++++++++
 .ci/test_r_package_windows.ps1 |  3 ++-
 2 files changed, 27 insertions(+), 1 deletion(-)
 create mode 100644 .ci/download-miktex.R

diff --git a/.ci/download-miktex.R b/.ci/download-miktex.R
new file mode 100644
index 000000000000..89ce4f1fc5fa
--- /dev/null
+++ b/.ci/download-miktex.R
@@ -0,0 +1,25 @@
+# mirrors that host miktexsetup.zip do so only with explicitly-named
+# files like miktexsetup-2.4.5.zip, so hard-coding a link to an archive as a
+# way to peg to one mirror does not work
+#
+# this script will find the specific version of miktexsetup.zip at a given
+# mirror
+library(httr)
+args <- commandArgs(trailingOnly = TRUE)
+DESTFILE <- args[[1L]]
+MIRROR <- "https://ctan.math.illinois.edu/systems/win32/miktex/setup/windows-x64/"
+mirror_contents <- httr::content(
+    httr::RETRY("GET", mirror)
+    , as = "text"
+)
+content_lines <- strsplit(mirror_contents, "\n")[[1L]]
+content_lines <- content_lines[grepl("miktexsetup-.*", content_lines)]
+zip_loc <- regexpr(">miktexsetup-[0-9]+.*x64\\.zip", content_lines)
+zip_name <- gsub(">", "", regmatches(content_lines, zip_loc))
+full_zip_url <- file.path(MIRROR, zip_name)
+print(sprintf("downloading %s", full_zip_url))
+download.file(
+    url = full_zip_url
+    , destfile = DESTFILE
+)
+print(sprintf("MiKTeX setup downloaded to %s", DESTFILE))
diff --git a/.ci/test_r_package_windows.ps1 b/.ci/test_r_package_windows.ps1
index 371eda68210d..ff1bf0b74696 100644
--- a/.ci/test_r_package_windows.ps1
+++ b/.ci/test_r_package_windows.ps1
@@ -52,7 +52,8 @@ Write-Output "Done installing Rtools"
 # build the package documentation for those
 if ($env:COMPILER -eq "MINGW") {
     Write-Output "Downloading MiKTeX"
-    Download-File-With-Retries -url "https://miktex.org/download/win/miktexsetup-x64.zip" -destfile "miktexsetup-x64.zip"
+    Rscript $env:BUILD_SOURCESDIRECTORY\.ci\download-miktex.R "miktexsetup-x64.zip"
+    #Download-File-With-Retries -url "https://miktex.org/download/win/miktexsetup-x64.zip" -destfile "miktexsetup-x64.zip"
     Add-Type -AssemblyName System.IO.Compression.FileSystem
     [System.IO.Compression.ZipFile]::ExtractToDirectory("miktexsetup-x64.zip", "miktex")
     Write-Output "Setting up MiKTeX"

From 9b238232493d0135a6ce719024c7555ab625d3cc Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Sun, 24 May 2020 23:18:32 -0500
Subject: [PATCH 83/95] trying to download miktex

---
 .ci/test_r_package_windows.ps1 | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/.ci/test_r_package_windows.ps1 b/.ci/test_r_package_windows.ps1
index ff1bf0b74696..7d4e2e7b44d9 100644
--- a/.ci/test_r_package_windows.ps1
+++ b/.ci/test_r_package_windows.ps1
@@ -48,6 +48,10 @@ Write-Output "Installing Rtools"
 Start-Process -FilePath Rtools.exe -NoNewWindow -Wait -ArgumentList "/VERYSILENT /DIR=$env:R_LIB_PATH/Rtools" ; Check-Output $?
 Write-Output "Done installing Rtools"
 
+Write-Output "Installing dependencies"
+$packages = "c('data.table', 'jsonlite', 'Matrix', 'processx', 'R6', 'testthat'), dependencies = c('Imports', 'Depends', 'LinkingTo')"
+Rscript --vanilla -e "options(install.packages.check.source = 'no'); install.packages($packages, repos = '$env:CRAN_MIRROR', type = 'binary', lib = '$env:R_LIB_PATH')" ; Check-Output $?
+
 # MiKTeX and pandoc can be skipped on non-MINGW builds, since we don't
 # build the package documentation for those
 if ($env:COMPILER -eq "MINGW") {
@@ -66,10 +70,6 @@ if ($env:COMPILER -eq "MINGW") {
     conda install -q -y --no-deps pandoc
 }
 
-Write-Output "Installing dependencies"
-$packages = "c('data.table', 'jsonlite', 'Matrix', 'processx', 'R6', 'testthat'), dependencies = c('Imports', 'Depends', 'LinkingTo')"
-Rscript --vanilla -e "options(install.packages.check.source = 'no'); install.packages($packages, repos = '$env:CRAN_MIRROR', type = 'binary', lib = '$env:R_LIB_PATH')" ; Check-Output $?
-
 Write-Output "Building R package"
 
 # R CMD check is not used for MSVC builds

From 007775622aa1da379705eb8b3bbfded987b18aa2 Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Sun, 24 May 2020 23:33:37 -0500
Subject: [PATCH 84/95] installing httr

---
 .ci/test_r_package_windows.ps1 | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.ci/test_r_package_windows.ps1 b/.ci/test_r_package_windows.ps1
index 7d4e2e7b44d9..7b53be1e4bbd 100644
--- a/.ci/test_r_package_windows.ps1
+++ b/.ci/test_r_package_windows.ps1
@@ -49,7 +49,7 @@ Start-Process -FilePath Rtools.exe -NoNewWindow -Wait -ArgumentList "/VERYSILENT
 Write-Output "Done installing Rtools"
 
 Write-Output "Installing dependencies"
-$packages = "c('data.table', 'jsonlite', 'Matrix', 'processx', 'R6', 'testthat'), dependencies = c('Imports', 'Depends', 'LinkingTo')"
+$packages = "c('data.table', 'jsonlite', 'httr', 'Matrix', 'processx', 'R6', 'testthat'), dependencies = c('Imports', 'Depends', 'LinkingTo')"
 Rscript --vanilla -e "options(install.packages.check.source = 'no'); install.packages($packages, repos = '$env:CRAN_MIRROR', type = 'binary', lib = '$env:R_LIB_PATH')" ; Check-Output $?
 
 # MiKTeX and pandoc can be skipped on non-MINGW builds, since we don't

From ba94d944e8ae173e22da3441b5f298227c5b8ff1 Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Sun, 24 May 2020 23:37:01 -0500
Subject: [PATCH 85/95] fix error in MiKTeX script

---
 .ci/download-miktex.R | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.ci/download-miktex.R b/.ci/download-miktex.R
index 89ce4f1fc5fa..f0d4b98cac5a 100644
--- a/.ci/download-miktex.R
+++ b/.ci/download-miktex.R
@@ -9,7 +9,7 @@ args <- commandArgs(trailingOnly = TRUE)
 DESTFILE <- args[[1L]]
 MIRROR <- "https://ctan.math.illinois.edu/systems/win32/miktex/setup/windows-x64/"
 mirror_contents <- httr::content(
-    httr::RETRY("GET", mirror)
+    httr::RETRY("GET", MIRROR)
     , as = "text"
 )
 content_lines <- strsplit(mirror_contents, "\n")[[1L]]

From 19179a9984a03f2a9433e8f3dba3078ed2ee9e53 Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Sun, 24 May 2020 23:57:32 -0500
Subject: [PATCH 86/95] remove comments

---
 .ci/test_r_package_windows.ps1 |  1 -
 .github/workflows/main.yml     | 13 -------------
 2 files changed, 14 deletions(-)

diff --git a/.ci/test_r_package_windows.ps1 b/.ci/test_r_package_windows.ps1
index 7b53be1e4bbd..73712d5d8c9a 100644
--- a/.ci/test_r_package_windows.ps1
+++ b/.ci/test_r_package_windows.ps1
@@ -57,7 +57,6 @@ Rscript --vanilla -e "options(install.packages.check.source = 'no'); install.pac
 if ($env:COMPILER -eq "MINGW") {
     Write-Output "Downloading MiKTeX"
     Rscript $env:BUILD_SOURCESDIRECTORY\.ci\download-miktex.R "miktexsetup-x64.zip"
-    #Download-File-With-Retries -url "https://miktex.org/download/win/miktexsetup-x64.zip" -destfile "miktexsetup-x64.zip"
     Add-Type -AssemblyName System.IO.Compression.FileSystem
     [System.IO.Compression.ZipFile]::ExtractToDirectory("miktexsetup-x64.zip", "miktex")
     Write-Output "Setting up MiKTeX"
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 55e9501a6a31..f653753a7e54 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -85,16 +85,3 @@ jobs:
           $env:BUILD_SOURCESDIRECTORY = $env:GITHUB_WORKSPACE
           conda init powershell
           & "$env:GITHUB_WORKSPACE/.ci/test_windows.ps1"
-
-# references
-# * https://help.github.com/en/actions/reference/workflow-syntax-for-github-actions#jobsjob_iddefaultsrun
-# * https://help.github.com/en/actions/reference/virtual-environments-for-github-hosted-runners
-# * https://help.github.com/en/actions/reference/workflow-commands-for-github-actions#setting-an-environment-variable
-# * https://github.com/marketplace/actions/setup-miniconda
-# * https://help.github.com/en/actions/reference/virtual-environments-for-github-hosted-runners#supported-runners-and-hardware-resources
-# * https://github.com/actions/virtual-environments/blob/master/images/win/Windows2019-Readme.md
-# * https://stackoverflow.com/questions/2095088/error-when-calling-3rd-party-executable-from-powershell-when-using-an-ide/2095623#2095623
-# * https://stackoverflow.com/a/11826589/3986677
-# * https://github.com/marketplace/actions/setup-miniconda
-# * https://help.github.com/en/actions/reference/workflow-syntax-for-github-actions
-# * see "fail-fast behavior" in https://help.github.com/en/actions/reference/workflow-syntax-for-github-actions

From c2c6a3950c75d091bec632a109cacefd3ab640a5 Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Mon, 25 May 2020 23:18:15 -0500
Subject: [PATCH 87/95] redirect output

---
 .ci/test_windows.ps1 | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.ci/test_windows.ps1 b/.ci/test_windows.ps1
index fd0e9f95a5e4..fd246cbc0695 100644
--- a/.ci/test_windows.ps1
+++ b/.ci/test_windows.ps1
@@ -13,7 +13,7 @@ if (Test-Path env:APPVEYOR) {
 }
 
 if ($env:TASK -eq "r-package") {
-  & $env:BUILD_SOURCESDIRECTORY\.ci\test_r_package_windows.ps1 ; Check-Output $?
+  & $env:BUILD_SOURCESDIRECTORY\.ci\test_r_package_windows.ps1 | Out-String -Stream ; Check-Output $?
   Exit 0
 }
 

From 75fc7c182c3e487ce41adc2e8e0f454c8cd7225f Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Mon, 25 May 2020 23:18:15 -0500
Subject: [PATCH 88/95] redirect output

---
 .ci/test_r_package_windows.ps1 | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/.ci/test_r_package_windows.ps1 b/.ci/test_r_package_windows.ps1
index 73712d5d8c9a..604fb508b29a 100644
--- a/.ci/test_r_package_windows.ps1
+++ b/.ci/test_r_package_windows.ps1
@@ -50,7 +50,7 @@ Write-Output "Done installing Rtools"
 
 Write-Output "Installing dependencies"
 $packages = "c('data.table', 'jsonlite', 'httr', 'Matrix', 'processx', 'R6', 'testthat'), dependencies = c('Imports', 'Depends', 'LinkingTo')"
-Rscript --vanilla -e "options(install.packages.check.source = 'no'); install.packages($packages, repos = '$env:CRAN_MIRROR', type = 'binary', lib = '$env:R_LIB_PATH')" ; Check-Output $?
+Rscript --vanilla -e "options(install.packages.check.source = 'no'); install.packages($packages, repos = '$env:CRAN_MIRROR', type = 'binary', lib = '$env:R_LIB_PATH')" | Out-String -Stream ; Check-Output $?
 
 # MiKTeX and pandoc can be skipped on non-MINGW builds, since we don't
 # build the package documentation for those
@@ -65,7 +65,7 @@ if ($env:COMPILER -eq "MINGW") {
     .\miktex\download\miktexsetup.exe --remote-package-repository="$env:CTAN_MIRROR" --portable="$env:R_LIB_PATH/miktex" --quiet install ; Check-Output $?
     Write-Output "Done installing MiKTeX"
 
-    initexmf --set-config-value [MPM]AutoInstall=1
+    initexmf --set-config-value [MPM]AutoInstall=1 | Out-String -Stream
     conda install -q -y --no-deps pandoc
 }
 
@@ -80,7 +80,7 @@ if ($env:COMPILER -ne "MSVC") {
 
   $env:_R_CHECK_FORCE_SUGGESTS_ = 0
   Write-Output "Running R CMD check as CRAN"
-  R.exe CMD check --no-multiarch --as-cran ${PKG_FILE_NAME} ; $check_succeeded = $?
+  R.exe CMD check --no-multiarch --as-cran ${PKG_FILE_NAME} | Out-String -Stream ; $check_succeeded = $?
 
   Write-Output "R CMD check build logs:"
   $INSTALL_LOG_FILE_NAME = "$env:BUILD_SOURCESDIRECTORY\lightgbm.Rcheck\00install.out"

From 4278d61378551e08fdf7be8bbba71c2ae1ff897e Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Mon, 25 May 2020 23:40:12 -0500
Subject: [PATCH 89/95] move linting back to Travis

---
 .github/workflows/main.yml | 12 +-----------
 .travis.yml                |  1 +
 2 files changed, 2 insertions(+), 11 deletions(-)

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index f653753a7e54..d59f83afe5f9 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -4,7 +4,7 @@ on: [push]
 
 jobs:
   test:
-    name: ${{ matrix.task }} (${{ matrix.os }}, ${{ matrix.subtitle }})
+    name: ${{ matrix.task }} (${{ matrix.os }}, ${{ matrix.compiler }})
     runs-on: ${{ matrix.os }}
     strategy:
       fail-fast: false
@@ -13,29 +13,21 @@ jobs:
           - os: ubuntu-latest
             task: r-package
             compiler: gcc
-            subtitle: gcc
           - os: ubuntu-latest
             task: r-package
             compiler: clang
-            subtitle: clang
           - os: macOS-latest
             task: r-package
             compiler: gcc
-            subtitle: gcc
           - os: macOS-latest
             task: r-package
             compiler: clang
-            subtitle: clang
           - os: windows-latest
             task: r-package
             compiler: MINGW
-            subtitle: MINGW
           - os: windows-latest
             task: r-package
             compiler: MSVC
-            subtitle: MSVC
-          - os: ubuntu-latest
-            task: lint
     steps:
       - name: Checkout repository
         uses: actions/checkout@v1
@@ -74,8 +66,6 @@ jobs:
           auto-update-conda: false
       - name: Setup and run tests on Windows
         if: matrix.os == 'windows-latest'
-        # have to use this explicit command to override the GitHub Actions
-        # default, where any command writing to stderr causes build failures
         shell: pwsh -NonInteractive -ExecutionPolicy Bypass -Command "& '{0}'"
         env:
           COMPILER: "${{ matrix.compiler }}"
diff --git a/.travis.yml b/.travis.yml
index eb05a901572e..cc14438e07a3 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -18,6 +18,7 @@ env:
     - TASK=sdist PYTHON_VERSION=2.7
     - TASK=bdist
     - TASK=if-else
+    - TASK=lint
     - TASK=check-docs
     - TASK=mpi METHOD=source
     - TASK=mpi METHOD=pip PYTHON_VERSION=3.7

From 2e8d8a8380af086fb53fb5ff819482c121625f43 Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Mon, 25 May 2020 23:46:34 -0500
Subject: [PATCH 90/95] change redirection

---
 .ci/test_r_package_windows.ps1 | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/.ci/test_r_package_windows.ps1 b/.ci/test_r_package_windows.ps1
index 604fb508b29a..0e91a9b8612e 100644
--- a/.ci/test_r_package_windows.ps1
+++ b/.ci/test_r_package_windows.ps1
@@ -50,7 +50,7 @@ Write-Output "Done installing Rtools"
 
 Write-Output "Installing dependencies"
 $packages = "c('data.table', 'jsonlite', 'httr', 'Matrix', 'processx', 'R6', 'testthat'), dependencies = c('Imports', 'Depends', 'LinkingTo')"
-Rscript --vanilla -e "options(install.packages.check.source = 'no'); install.packages($packages, repos = '$env:CRAN_MIRROR', type = 'binary', lib = '$env:R_LIB_PATH')" | Out-String -Stream ; Check-Output $?
+Rscript --vanilla -e "options(install.packages.check.source = 'no'); install.packages($packages, repos = '$env:CRAN_MIRROR', type = 'binary', lib = '$env:R_LIB_PATH')" | Out-String -Stream
 
 # MiKTeX and pandoc can be skipped on non-MINGW builds, since we don't
 # build the package documentation for those
@@ -80,7 +80,7 @@ if ($env:COMPILER -ne "MSVC") {
 
   $env:_R_CHECK_FORCE_SUGGESTS_ = 0
   Write-Output "Running R CMD check as CRAN"
-  R.exe CMD check --no-multiarch --as-cran ${PKG_FILE_NAME} | Out-String -Stream ; $check_succeeded = $?
+  R.exe CMD check --no-multiarch --as-cran ${PKG_FILE_NAME} ; $check_succeeded = $?
 
   Write-Output "R CMD check build logs:"
   $INSTALL_LOG_FILE_NAME = "$env:BUILD_SOURCESDIRECTORY\lightgbm.Rcheck\00install.out"

From 6efe52ff45590def0a02911f480ea0424a746847 Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Wed, 27 May 2020 20:13:18 -0500
Subject: [PATCH 91/95] switch back to just mac and linux

---
 .appveyor.yml                  |  5 +++++
 .ci/download-miktex.R          | 25 -------------------------
 .ci/test_r_package_windows.ps1 | 16 ++++++++--------
 .ci/test_windows.ps1           |  2 +-
 .github/workflows/main.yml     | 22 ----------------------
 5 files changed, 14 insertions(+), 56 deletions(-)
 delete mode 100644 .ci/download-miktex.R

diff --git a/.appveyor.yml b/.appveyor.yml
index f3404faa68b9..f27fa78fb89c 100644
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -13,6 +13,11 @@ branches:
 
 environment:
   matrix:
+    - COMPILER: MINGW
+      TASK: r-package
+    - COMPILER: MSVC
+      TASK: r-package
+      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2019
     - COMPILER: MSVC
       TASK: python
     - COMPILER: MINGW
diff --git a/.ci/download-miktex.R b/.ci/download-miktex.R
deleted file mode 100644
index f0d4b98cac5a..000000000000
--- a/.ci/download-miktex.R
+++ /dev/null
@@ -1,25 +0,0 @@
-# mirrors that host miktexsetup.zip do so only with explicitly-named
-# files like miktexsetup-2.4.5.zip, so hard-coding a link to an archive as a
-# way to peg to one mirror does not work
-#
-# this script will find the specific version of miktexsetup.zip at a given
-# mirror
-library(httr)
-args <- commandArgs(trailingOnly = TRUE)
-DESTFILE <- args[[1L]]
-MIRROR <- "https://ctan.math.illinois.edu/systems/win32/miktex/setup/windows-x64/"
-mirror_contents <- httr::content(
-    httr::RETRY("GET", MIRROR)
-    , as = "text"
-)
-content_lines <- strsplit(mirror_contents, "\n")[[1L]]
-content_lines <- content_lines[grepl("miktexsetup-.*", content_lines)]
-zip_loc <- regexpr(">miktexsetup-[0-9]+.*x64\\.zip", content_lines)
-zip_name <- gsub(">", "", regmatches(content_lines, zip_loc))
-full_zip_url <- file.path(MIRROR, zip_name)
-print(sprintf("downloading %s", full_zip_url))
-download.file(
-    url = full_zip_url
-    , destfile = DESTFILE
-)
-print(sprintf("MiKTeX setup downloaded to %s", DESTFILE))
diff --git a/.ci/test_r_package_windows.ps1 b/.ci/test_r_package_windows.ps1
index 0e91a9b8612e..966cc3dc0e91 100644
--- a/.ci/test_r_package_windows.ps1
+++ b/.ci/test_r_package_windows.ps1
@@ -48,15 +48,11 @@ Write-Output "Installing Rtools"
 Start-Process -FilePath Rtools.exe -NoNewWindow -Wait -ArgumentList "/VERYSILENT /DIR=$env:R_LIB_PATH/Rtools" ; Check-Output $?
 Write-Output "Done installing Rtools"
 
-Write-Output "Installing dependencies"
-$packages = "c('data.table', 'jsonlite', 'httr', 'Matrix', 'processx', 'R6', 'testthat'), dependencies = c('Imports', 'Depends', 'LinkingTo')"
-Rscript --vanilla -e "options(install.packages.check.source = 'no'); install.packages($packages, repos = '$env:CRAN_MIRROR', type = 'binary', lib = '$env:R_LIB_PATH')" | Out-String -Stream
-
 # MiKTeX and pandoc can be skipped on non-MINGW builds, since we don't
 # build the package documentation for those
 if ($env:COMPILER -eq "MINGW") {
     Write-Output "Downloading MiKTeX"
-    Rscript $env:BUILD_SOURCESDIRECTORY\.ci\download-miktex.R "miktexsetup-x64.zip"
+    Download-File-With-Retries -url "https://miktex.org/download/win/miktexsetup-x64.zip" -destfile "miktexsetup-x64.zip"
     Add-Type -AssemblyName System.IO.Compression.FileSystem
     [System.IO.Compression.ZipFile]::ExtractToDirectory("miktexsetup-x64.zip", "miktex")
     Write-Output "Setting up MiKTeX"
@@ -65,10 +61,14 @@ if ($env:COMPILER -eq "MINGW") {
     .\miktex\download\miktexsetup.exe --remote-package-repository="$env:CTAN_MIRROR" --portable="$env:R_LIB_PATH/miktex" --quiet install ; Check-Output $?
     Write-Output "Done installing MiKTeX"
 
-    initexmf --set-config-value [MPM]AutoInstall=1 | Out-String -Stream
+    initexmf --set-config-value [MPM]AutoInstall=1
     conda install -q -y --no-deps pandoc
 }
 
+Write-Output "Installing dependencies"
+$packages = "c('data.table', 'jsonlite', 'Matrix', 'processx', 'R6', 'testthat'), dependencies = c('Imports', 'Depends', 'LinkingTo')"
+Rscript --vanilla -e "options(install.packages.check.source = 'no'); install.packages($packages, repos = '$env:CRAN_MIRROR', type = 'binary', lib = '$env:R_LIB_PATH')" ; Check-Output $?
+
 Write-Output "Building R package"
 
 # R CMD check is not used for MSVC builds
@@ -94,8 +94,8 @@ if ($env:COMPILER -ne "MSVC") {
       Check-Output $False
   }
 
-  $note_str = Get-Content -Path "${LOG_FILE_NAME}" | Select-String -Pattern '.*Status.* NOTE' | Out-String ; Check-Output $?
-  $relevant_line = $note_str -match '(\d+) NOTE'
+  $note_str = Get-Content "${LOG_FILE_NAME}" | Select-String -Pattern ' NOTE' | Out-String ; Check-Output $?
+  $relevant_line = $note_str -match '.*Status: (\d+) NOTE.*'
   $NUM_CHECK_NOTES = $matches[1]
   $ALLOWED_CHECK_NOTES = 3
   if ([int]$NUM_CHECK_NOTES -gt $ALLOWED_CHECK_NOTES) {
diff --git a/.ci/test_windows.ps1 b/.ci/test_windows.ps1
index fd246cbc0695..fd0e9f95a5e4 100644
--- a/.ci/test_windows.ps1
+++ b/.ci/test_windows.ps1
@@ -13,7 +13,7 @@ if (Test-Path env:APPVEYOR) {
 }
 
 if ($env:TASK -eq "r-package") {
-  & $env:BUILD_SOURCESDIRECTORY\.ci\test_r_package_windows.ps1 | Out-String -Stream ; Check-Output $?
+  & $env:BUILD_SOURCESDIRECTORY\.ci\test_r_package_windows.ps1 ; Check-Output $?
   Exit 0
 }
 
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index d59f83afe5f9..7310091c268f 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -22,12 +22,6 @@ jobs:
           - os: macOS-latest
             task: r-package
             compiler: clang
-          - os: windows-latest
-            task: r-package
-            compiler: MINGW
-          - os: windows-latest
-            task: r-package
-            compiler: MSVC
     steps:
       - name: Checkout repository
         uses: actions/checkout@v1
@@ -59,19 +53,3 @@ jobs:
           export LGB_VER=$(head -n 1 VERSION.txt)
           $GITHUB_WORKSPACE/.ci/setup.sh
           $GITHUB_WORKSPACE/.ci/test.sh
-      - name: Use conda on Windows
-        if: matrix.os == 'windows-latest'
-        uses: goanpeca/setup-miniconda@v1
-        with:
-          auto-update-conda: false
-      - name: Setup and run tests on Windows
-        if: matrix.os == 'windows-latest'
-        shell: pwsh -NonInteractive -ExecutionPolicy Bypass -Command "& '{0}'"
-        env:
-          COMPILER: "${{ matrix.compiler }}"
-          GITHUB_ACTIONS: "true"
-          TASK: "${{ matrix.task }}"
-        run: |
-          $env:BUILD_SOURCESDIRECTORY = $env:GITHUB_WORKSPACE
-          conda init powershell
-          & "$env:GITHUB_WORKSPACE/.ci/test_windows.ps1"

From f06fd220c47c5f8762be6c4139266cf919d4e236 Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Wed, 27 May 2020 20:39:37 -0500
Subject: [PATCH 92/95] put linting exclude back

---
 .travis.yml | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/.travis.yml b/.travis.yml
index cc14438e07a3..c1604000e98d 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -31,6 +31,8 @@ matrix:
       env: TASK=gpu METHOD=source PYTHON_VERSION=3.5
     - os: osx
       env: TASK=gpu METHOD=pip PYTHON_VERSION=3.6
+    - os: osx
+      env: TASK=lint
     - os: osx
       env: TASK=check-docs
 

From 1ea7a360df0114dc4f8b63b82613731f95f49a47 Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Fri, 29 May 2020 20:27:01 -0500
Subject: [PATCH 93/95] renamed R_TRAVIS_LINUX

---
 .ci/test_r_package.sh      | 2 +-
 .github/workflows/main.yml | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/.ci/test_r_package.sh b/.ci/test_r_package.sh
index d9377857a518..5fb35bb887b1 100755
--- a/.ci/test_r_package.sh
+++ b/.ci/test_r_package.sh
@@ -23,7 +23,7 @@ if [[ $AZURE != "true" ]] && [[ $OS_NAME == "linux" ]]; then
     sudo apt-get install \
         --no-install-recommends \
         -y \
-            r-base-dev=${R_TRAVIS_LINUX_VERSION} \
+            r-base-dev=${R_LINUX_VERSION} \
             texinfo \
             texlive-latex-recommended \
             texlive-fonts-recommended \
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 7310091c268f..2c770994b0bf 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -42,7 +42,7 @@ jobs:
               export R_MAC_VERSION=3.6.3
           elif [[ "${{ matrix.os }}" == "ubuntu-latest" ]]; then
               export OS_NAME="linux"
-              export R_TRAVIS_LINUX_VERSION=3.6.3-1bionic;
+              export R_LINUX_VERSION=3.6.3-1bionic;
           fi
           if [ -z ${{ matrix.compiler }} ]; then
               export COMPILER=${{ matrix.compiler }}

From 728d7f0cb8b2470143ab66a27fed1d94ae78d353 Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Fri, 29 May 2020 20:41:56 -0500
Subject: [PATCH 94/95] revert changes to non-R tasks and update events

---
 .ci/test.sh                | 4 ++--
 .github/workflows/main.yml | 8 +++++++-
 2 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/.ci/test.sh b/.ci/test.sh
index b64cc510a505..7c68ca733fe9 100755
--- a/.ci/test.sh
+++ b/.ci/test.sh
@@ -13,7 +13,7 @@ source activate $CONDA_ENV
 
 cd $BUILD_DIRECTORY
 
-if [[ $TASK == "check-docs" ]]; then
+if [[ $TRAVIS == "true" ]] && [[ $TASK == "check-docs" ]]; then
     cd $BUILD_DIRECTORY/docs
     conda install -q -y -n $CONDA_ENV -c conda-forge doxygen
     pip install --user -r requirements.txt rstcheck
@@ -40,7 +40,7 @@ if [[ $TASK == "check-docs" ]]; then
     exit 0
 fi
 
-if [[ $TASK == "lint" ]]; then
+if [[ $TRAVIS == "true" ]] && [[ $TASK == "lint" ]]; then
     conda install -q -y -n $CONDA_ENV \
         pycodestyle \
         pydocstyle \
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 2c770994b0bf..9955dd73217e 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -1,6 +1,12 @@
 name: GitHub Actions
 
-on: [push]
+on:
+  push:
+    branches:
+    - master
+  pull_request:
+    branches:
+    - master
 
 jobs:
   test:

From 0710aae4d7f86375978ae023df1bd3a7664bff3e Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Sun, 31 May 2020 11:59:13 -0500
Subject: [PATCH 95/95] simplify

---
 .github/workflows/main.yml | 12 ++++--------
 1 file changed, 4 insertions(+), 8 deletions(-)

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 9955dd73217e..eefebe2a9cb2 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -37,12 +37,10 @@ jobs:
       - name: Setup and run tests on Linux and macOS
         if: matrix.os != 'windows-latest'
         shell: bash
-        env:
-          COMPILER: "${{ matrix.compiler }}"
-          CONDA_ENV: "test-env"
-          GITHUB_ACTIONS: "true"
-          TASK: "${{ matrix.task }}"
         run: |
+          export TASK="${{ matrix.task }}"
+          export COMPILER="${{ matrix.compiler }}"
+          export GITHUB_ACTIONS="true"
           if [[ "${{ matrix.os }}" == "macOS-latest" ]]; then
               export OS_NAME="macos"
               export R_MAC_VERSION=3.6.3
@@ -50,10 +48,8 @@ jobs:
               export OS_NAME="linux"
               export R_LINUX_VERSION=3.6.3-1bionic;
           fi
-          if [ -z ${{ matrix.compiler }} ]; then
-              export COMPILER=${{ matrix.compiler }}
-          fi
           export BUILD_DIRECTORY="$GITHUB_WORKSPACE"
+          export CONDA_ENV="test-env"
           export CONDA="$HOME/miniconda"
           export PATH="$CONDA/bin:${HOME}/.local/bin:$PATH"
           export LGB_VER=$(head -n 1 VERSION.txt)