From 3c358c40846272e5d0498508f4516259dbbec02d Mon Sep 17 00:00:00 2001
From: Arno Strouwen <arno.strouwen@telenet.be>
Date: Fri, 22 Dec 2023 14:54:50 +0100
Subject: [PATCH] downgrade CI

---
 .github/workflows/Downgrade.yml | 29 +++++++++++++++++++++++++++++
 Project.toml                    | 26 ++++++++++++--------------
 src/LinearSolve.jl              |  1 -
 src/init.jl                     | 18 +-----------------
 4 files changed, 42 insertions(+), 32 deletions(-)
 create mode 100644 .github/workflows/Downgrade.yml

diff --git a/.github/workflows/Downgrade.yml b/.github/workflows/Downgrade.yml
new file mode 100644
index 000000000..372644a06
--- /dev/null
+++ b/.github/workflows/Downgrade.yml
@@ -0,0 +1,29 @@
+name: Downgrade
+on:
+  pull_request:
+    branches:
+      - main
+    paths-ignore:
+      - 'docs/**'
+  push:
+    branches:
+      - main
+    paths-ignore:
+      - 'docs/**'
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        version: ['1']
+    steps:
+      - uses: actions/checkout@v4
+      - uses: julia-actions/setup-julia@v1
+        with:
+          version: ${{ matrix.version }}
+      - uses: cjdoris/julia-downgrade-compat-action@v1
+#        if: ${{ matrix.version == '1.6' }}
+        with:
+          skip: Pkg,TOML
+      - uses: julia-actions/julia-buildpkg@v1
+      - uses: julia-actions/julia-runtest@v1
\ No newline at end of file
diff --git a/Project.toml b/Project.toml
index ba9907272..58e7feab5 100644
--- a/Project.toml
+++ b/Project.toml
@@ -20,7 +20,6 @@ PrecompileTools = "aea7be01-6a6a-4083-8856-8a6e6704d82a"
 Preferences = "21216c6a-2e73-6563-6e65-726566657250"
 RecursiveFactorization = "f2c3362d-daeb-58d1-803e-2bc74f2840b4"
 Reexport = "189a3867-3050-52da-a836-e630ba90ab69"
-Requires = "ae029012-a4dd-5104-9daa-d747884805df"
 SciMLBase = "0bca4576-84f4-4d90-8ffe-ffa030f20462"
 SciMLOperators = "c0aeaf25-5076-4817-a8d5-81caf7dfa961"
 Setfield = "efcf1570-3423-57d1-acb7-fd33fddbac46"
@@ -63,40 +62,39 @@ AllocCheck = "0.1"
 Aqua = "0.8"
 ArrayInterface = "7.4.11"
 BandedMatrices = "1"
-BlockDiagonals = "0.1"
+BlockDiagonals = "0.1.42"
 CUDA = "5"
 ConcreteStructs = "0.2"
 DocStringExtensions = "0.9"
 EnumX = "1"
-Enzyme = "0.11"
-EnzymeCore = "0.6"
+Enzyme = "0.11.11"
+EnzymeCore = "0.6.4"
 FastAlmostBandedMatrices = "0.1"
 FastLapackInterface = "2"
-FiniteDiff = "2"
-ForwardDiff = "0.10"
+FiniteDiff = "2.15"
+ForwardDiff = "0.10.13"
 GPUArraysCore = "0.1"
 HYPRE = "1.4.0"
-InteractiveUtils = "1.6"
+InteractiveUtils = "1.9"
 IterativeSolvers = "0.9.3"
 JET = "0.8"
 KLU = "0.3.0, 0.4"
 KernelAbstractions = "0.9"
 Krylov = "0.9"
 KrylovKit = "0.6"
-Libdl = "1.6"
+Libdl = "1.9"
 LinearAlgebra = "1.9"
 MPI = "0.20"
 Metal = "0.5"
 MultiFloats = "1"
 Pardiso = "0.5"
 Pkg = "1"
-PrecompileTools = "1"
-Preferences = "1"
+PrecompileTools = "1.1"
+Preferences = "1.4"
 Random = "1"
-RecursiveArrayTools = "2, 3"
-RecursiveFactorization = "0.2.8"
+RecursiveArrayTools = "2.38, 3"
+RecursiveFactorization = "0.2.14"
 Reexport = "1"
-Requires = "1"
 SafeTestsets = "0.1"
 SciMLBase = "2"
 SciMLOperators = "0.3"
@@ -104,7 +102,7 @@ Setfield = "1"
 SparseArrays = "1.9"
 Sparspak = "0.3.6"
 StaticArrays = "1"
-StaticArraysCore = "1"
+StaticArraysCore = "1.2"
 Test = "1"
 UnPack = "1"
 julia = "1.9"
diff --git a/src/LinearSolve.jl b/src/LinearSolve.jl
index 572e310e9..fc039d13f 100644
--- a/src/LinearSolve.jl
+++ b/src/LinearSolve.jl
@@ -23,7 +23,6 @@ PrecompileTools.@recompile_invalidations begin
     using FastLapackInterface
     using DocStringExtensions
     using EnumX
-    using Requires
     import InteractiveUtils
 
     import StaticArraysCore: StaticArray, SVector, MVector, SMatrix, MMatrix
diff --git a/src/init.jl b/src/init.jl
index 1291b4556..e10960f1d 100644
--- a/src/init.jl
+++ b/src/init.jl
@@ -1,19 +1,3 @@
 function __init__()
-    @static if VERSION < v"1.7beta"
-        blas = BLAS.vendor()
-        IS_OPENBLAS[] = blas == :openblas64 || blas == :openblas
-    else
-        IS_OPENBLAS[] = occursin("openblas", BLAS.get_config().loaded_libs[1].libname)
-    end
-    @static if !isdefined(Base, :get_extension)
-        @require IterativeSolvers="b77e0a4c-d291-57a0-90e8-8db25a27a240" begin
-            include("../ext/LinearSolveIterativeSolversExt.jl")
-        end
-        @require KrylovKit="0b1a1467-8014-51b9-945f-bf0ae24f4b77" begin
-            include("../ext/LinearSolveKrylovKitExt.jl")
-        end
-        @require Enzyme="7da242da-08ed-463a-9acd-ee780be4f1d9" begin
-            include("../ext/LinearSolveEnzymeExt.jl")
-        end
-    end
+    IS_OPENBLAS[] = occursin("openblas", BLAS.get_config().loaded_libs[1].libname)
 end