migrate to python3.8

.flake8

@@ -5,3 +5,5 @@ extend-ignore = E203,E231
 ignore =
     F811,
     W503,
+    E701,
+    E704

.github/workflows/release.yaml

@@ -6,38 +6,38 @@ jobs:
   release:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v4
-      with:
-        fetch-depth: 0
-    - uses: actions/setup-python@v4
-      with:
-        python-version: "3.7"
-    - name: Check prerelease
-      id: check_version
-      run: |
-        if [[ "${{ github.ref }}" =~ ^refs/tags/v[0-9.]+rc[0-9]+$ ]]; then
-          echo "PRERELEASE=true" >> $GITHUB_OUTPUT
-        else
-          echo "PRERELEASE=false" >> $GITHUB_OUTPUT
-        fi
-    - name: Get Changelog
-      id: get-changelog
-      run: |
-        tags=$(git tag --sort=-version:refname | head -n 2 | awk '{print $1}')
-        tag_from=$(echo "$tags" | sed -n '2p')
-        tag_to=$(echo "$tags" | sed -n '1p')
-        git log --oneline --decorate "${tag_from}..${tag_to}" | tail -n +2 | awk '{print "* "$0}' > .changelog.md
-    - name: Create Release
-      uses: actions/create-release@main
-      env:
-        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-      with:
-        tag_name: ${{ github.ref }}
-        release_name: ${{ github.ref }}
-        body_path: .changelog.md
-        draft: false
-        prerelease: ${{ steps.check_version.outputs.PRERELEASE }}
-    - name: Set up PDM
-      run: pip install pdm==2.10.4
-    - name: Publish package distributions to PyPI
-      run: pdm publish -u "__token__" -P ${{ secrets.TWINE_PASSWORD }}
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+      - uses: actions/setup-python@v4
+        with:
+          python-version: "3.8"
+      - name: Check prerelease
+        id: check_version
+        run: |
+          if [[ "${{ github.ref }}" =~ ^refs/tags/v[0-9.]+rc[0-9]+$ ]]; then
+            echo "PRERELEASE=true" >> $GITHUB_OUTPUT
+          else
+            echo "PRERELEASE=false" >> $GITHUB_OUTPUT
+          fi
+      - name: Get Changelog
+        id: get-changelog
+        run: |
+          tags=$(git tag --sort=-version:refname | head -n 2 | awk '{print $1}')
+          tag_from=$(echo "$tags" | sed -n '2p')
+          tag_to=$(echo "$tags" | sed -n '1p')
+          git log --oneline --decorate "${tag_from}..${tag_to}" | tail -n +2 | awk '{print "* "$0}' > .changelog.md
+      - name: Create Release
+        uses: actions/create-release@main
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          tag_name: ${{ github.ref }}
+          release_name: ${{ github.ref }}
+          body_path: .changelog.md
+          draft: false
+          prerelease: ${{ steps.check_version.outputs.PRERELEASE }}
+      - name: Set up PDM
+        run: pip install pdm==2.10.4
+      - name: Publish package distributions to PyPI
+        run: pdm publish -u "__token__" -P ${{ secrets.TWINE_PASSWORD }}

.github/workflows/test.yaml

@@ -11,38 +11,38 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ["3.7", "3.8", "3.9", "3.10", "3.11", "3.12"]
+        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12"]
     steps:
-    - uses: actions/checkout@v4
-    - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v4
-      with:
-        python-version: ${{ matrix.python-version }}
-    - name: Set up PDM
-      run: pip install pdm==2.10.4
-    - name: Install dependencies
-      run: |
-        pdm sync -d -G test -G dev
-        pip install tox tox-pdm tox-gh-actions
-    - name: Run flake8
-      if: startsWith(matrix.python-version, '3.7')
-      run: pdm run flake
-    - name: Run mypy
-      if: startsWith(matrix.python-version, '3.7')
-      run: pdm run mypy
-    - name: Run black
-      if: startsWith(matrix.python-version, '3.7')
-      run: pdm run fmt --check
-    - name: Run unit tests
-      run: tox run -- --cov-report=term
-      
+      - uses: actions/checkout@v4
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v4
+        with:
+          python-version: ${{ matrix.python-version }}
+      - name: Set up PDM
+        run: pip install pdm==2.10.4
+      - name: Install dependencies
+        run: |
+          pdm sync -d -G test -G dev
+          pip install tox tox-pdm tox-gh-actions
+      - name: Run flake8
+        if: startsWith(matrix.python-version, '3.8')
+        run: pdm run flake
+      - name: Run mypy
+        if: startsWith(matrix.python-version, '3.8')
+        run: pdm run mypy
+      - name: Run black
+        if: startsWith(matrix.python-version, '3.8')
+        run: pdm run fmt --check
+      - name: Run unit tests
+        run: tox run -- --cov-report=term
+
   federation-test:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
-    - name: Install Lets
-      uses: lets-cli/[email protected]
-      with:
-        version: latest
-    - name: Test federation compatibility
-      run: timeout 600 lets federation-compatibility-test
+      - uses: actions/checkout@v3
+      - name: Install Lets
+        uses: lets-cli/[email protected]
+        with:
+          version: latest
+      - name: Test federation compatibility
+        run: timeout 600 lets federation-compatibility-test

.readthedocs.yaml

@@ -5,9 +5,8 @@ build:
   tools:
     python: "3.10"
   commands:
-    - pip install pdm==2.6
-    - pdm sync -G docs
+    - pip install pdm==2.7.4
+    - pdm sync -G dev -G docs
     - pdm run docs
     - mkdir -p _readthedocs
     - mv docs/build _readthedocs/html
-

Dockerfile

@@ -1,11 +1,11 @@
-FROM python:3.7.13-slim as base
+FROM python:3.8.18-slim as base
 
 WORKDIR /work
 
 ENV PIP_VERSION=23.1.2
-ENV PDM_VERSION=2.6
+ENV PDM_VERSION=2.7.4
 ENV PDM_USE_VENV=no
-ENV PYTHONPATH=/work/__pypackages__/3.7/lib
+ENV PYTHONPATH=/work/__pypackages__/3.8/lib
 
 RUN apt-get update && apt-get install -y libpq-dev && \
   pip install --upgrade pip==${PIP_VERSION} && pip install pdm==${PDM_VERSION}

docker-compose.yaml

@@ -68,6 +68,12 @@ services:
       - postgres
     command: pdm run test-all
 
+  test-pg:
+    <<: *test-base
+    depends_on:
+      - postgres
+    command: pdm run test-pg
+
   postgres:
     image: postgres:13-alpine
     init: true

docs/asyncio.rst

@@ -71,4 +71,4 @@ Testing many to one link:
     :lines: 189-219
     :dedent: 4
 
-.. _aiopg: http://aiopg.readthedocs.io/en/stable/
+.. _aiopg: https://aiopg.readthedocs.io/en/stable/

docs/changelog/changes_02.rst

@@ -169,4 +169,4 @@ Backward-incompatible changes
   :py:class:`hiku.graph.Option` now is required
 
 
-.. _aiopg: http://aiopg.readthedocs.io/
+.. _aiopg: https://aiopg.readthedocs.io/

docs/changelog/changes_08.rst

@@ -25,6 +25,7 @@ Changes in 0.8
   - Move `GraphQLError` to `hiku.error` module
   - Drop `GraphQLError.errors` field. Earlier we used to store multiple errors in single `GraphQLError` but now its one message - one `GraphQLError`.
   - Add `GraphQLError.message` field
+  - Dropped support for Python 3.7, which ended support on 2023-06-27
 
 Backward-incompatible changes
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
@@ -38,3 +39,4 @@ Backward-incompatible changes
   - Move `GraphQLError` to `hiku.error` module
   - Drop `GraphQLError.errors` field
   - Add `GraphQLError.message` field
+  - Dropped support for Python 3.7, which ended support on 2023-06-27

docs/conf.py

@@ -1,14 +1,15 @@
 extensions = [
     "sphinx.ext.autodoc",
     "sphinx.ext.intersphinx",
+    "sphinx_inline_tabs",
 ]
 
 autoclass_content = "both"
 autodoc_member_order = "bysource"
 
 intersphinx_mapping = {
     "python": ("https://docs.python.org/3.6", None),
-    "aiopg": ("http://aiopg.readthedocs.io/en/stable", None),
+    "aiopg": ("https://aiopg.readthedocs.io/en/stable", None),
     "sqlalchemy": ("http://docs.sqlalchemy.org/en/rel_1_1", None),
 }
 
@@ -24,8 +25,3 @@
 html_theme = "furo"
 html_static_path = ["_static"]
 html_theme_options = {}
-
-
-def setup(app):
-    app.add_css_file("style.css?r=1")
-    app.add_css_file("fixes.css?r=1")

docs/directives.rst

@@ -75,9 +75,9 @@ Built-in schema directives
 
 Example of `@deprecated` directive in graphql
 
-.. code-block::
+.. code-block:: graphql
 
-    type Order
+    type Order {
         id: ID!
         state: String!
         status: Int! @deprecated(reason: "Use 'state' instead")
@@ -133,4 +133,4 @@ You can also define your own directives (reimplementation of `Deprecated` direct
 Note that type annotations for fields such as `why: int` are required, because `hiku`
 will use them to generate types for schema introspection.
 
-Also you can omit `name='why`, and `hiku` will then use the name of the field in the class automatically.
+Also you can omit `name='why`, and `hiku` will then use the name of the field in the class automatically.

examples/federation-compatibility/federation.Dockerfile

@@ -1,14 +1,14 @@
-FROM python:3.7.13-slim as base
+FROM python:3.8.18-slim as base
 
 WORKDIR /work
 
 ENV PIP_VERSION=23.1.2
-ENV PDM_VERSION=2.6
+ENV PDM_VERSION=2.7.4
 ENV PDM_USE_VENV=no
-ENV PYTHONPATH=/work/__pypackages__/3.7/lib
+ENV PYTHONPATH=/work/__pypackages__/3.8/lib
 
 RUN apt-get update && apt-get install -y libpq-dev gcc && \
-    pip install --upgrade pip==${PIP_VERSION} && pip install pdm==${PDM_VERSION}
+  pip install --upgrade pip==${PIP_VERSION} && pip install pdm==${PDM_VERSION}
 
 # for pyproject.toml to extract version
 COPY hiku/__init__.py ./hiku/__init__.py

examples/federation-compatibility/server.py

@@ -369,8 +369,7 @@ def resolve_reference_direct(representations):
     compose=True,
     import_url="https://myspecs.dev/myCustomDirective/v1.0",
 )
-class Custom(FederationSchemaDirective):
-    ...
+class Custom(FederationSchemaDirective): ...
 
 
 QUERY_GRAPH = Graph(

hiku/cache.py

@@ -17,11 +17,11 @@
     Iterator,
     Optional,
     Callable,
+    Protocol,
 )
 
 from prometheus_client import Counter
 
-from hiku.compat import Protocol
 from hiku.result import Index
 from hiku.graph import (
     Many,
@@ -55,8 +55,7 @@
 
 
 class Hasher(Protocol):
-    def update(self, data: bytes) -> None:
-        ...
+    def update(self, data: bytes) -> None: ...
 
 
 CacheKeyFn = Callable[["Context", Hasher], None]

hiku/compat.py

@@ -1,44 +1,16 @@
 import sys
-import ast as _ast
-from typing import Any
 
-PY38: bool = sys.version_info >= (3, 8)
 PY310: bool = sys.version_info >= (3, 10)
 
 
-class _AST:
-    def __getattr__(self, name: str) -> Any:
-        return getattr(_ast, name)
-
-    if PY38:
-        arguments = _ast.arguments
-    else:
-
-        @staticmethod
-        def arguments(_, args, vararg, kwonlyargs, kw_defaults, kwarg, defaults):  # type: ignore[no-untyped-def] # noqa
-            return _ast.arguments(
-                args, vararg, kwonlyargs, kw_defaults, kwarg, defaults
-            )  # noqa
-
-
-ast = _AST()
-
 if sys.version_info >= (3, 10):
     from typing import Concatenate, ParamSpec, TypeAlias
 else:
     from typing_extensions import Concatenate, ParamSpec, TypeAlias
 
-if sys.version_info >= (3, 8):
-    from typing import Protocol
-else:
-    from typing_extensions import Protocol
-
 
 __all__ = [
-    "PY38",
     "PY310",
-    "ast",
-    "Protocol",
     "Concatenate",
     "ParamSpec",
     "TypeAlias",