Remove support for python < 3.9

.appveyor.yml

@@ -41,7 +41,7 @@
 #     will run until the file is removed (or 60 min have passed)
 #
 #   - in a terminal execute, for example, `C:\datalad_debug.bat 39` to set up the
-#     environment to debug in a Python 3.8 session (should generally match the
+#     environment to debug in a Python 3.9 session (should generally match the
 #     respective CI run configuration).
 
 
@@ -59,9 +59,10 @@ environment:
     # is a need for debugging
 
     # Ubuntu core tests
-    - ID: Ubu20
-      APPVEYOR_BUILD_WORKER_IMAGE: Ubuntu2004
-      INSTALL_SYSPKGS: python3-virtualenv
+    - ID: Ubu22
+      APPVEYOR_BUILD_WORKER_IMAGE: Ubuntu2204
+      PY: 3.10
+      INSTALL_SYSPKGS: libffi7 python3-venv
       # system git-annex is way too old, use better one
       INSTALL_GITANNEX: git-annex -m deb-url --url http://snapshot.debian.org/archive/debian/20201228T023115Z/pool/main/g/git-annex/git-annex_8.20201127-1_amd64.deb
     # Windows core tests
@@ -71,32 +72,22 @@ environment:
       PY: 39-x64
       INSTALL_GITANNEX: git-annex -m datalad/packages
     # MacOS core tests
-    - ID: MacP38core
+    - ID: MacP310-default
       APPVEYOR_BUILD_WORKER_IMAGE: macos-monterey
-      PY: 3.8
-      # does not give a functional installation
-      # INSTALL_GITANNEX: git-annex -m snapshot
-      #INSTALL_GITANNEX: git-annex=8.20201129
+      PY: 3.10
+      # ATM default is brew
       INSTALL_GITANNEX: git-annex
 
-    - ID: MacP38a1
-      APPVEYOR_BUILD_WORKER_IMAGE: macos-monterey
-      PY: 3.8
-      INSTALL_GITANNEX: git-annex
-    - ID: MacP38a2
+    - ID: MacP310-packages
       APPVEYOR_BUILD_WORKER_IMAGE: macos-monterey
-      PY: 3.8
-      INSTALL_GITANNEX: git-annex
-    - ID: MacP38a3
-      APPVEYOR_BUILD_WORKER_IMAGE: macos-monterey
-      PY: 3.8
-      INSTALL_GITANNEX: git-annex
+      PY: 3.10
+      INSTALL_GITANNEX: git-annex -m datalad/packages
 
     # Test alternative Python versions
-    - ID: Ubu20P37
-      PY: 3.7
+    - ID: Ubu20P39
+      PY: 3.9
       APPVEYOR_BUILD_WORKER_IMAGE: Ubuntu2004
-      INSTALL_SYSPKGS: python3-virtualenv
+      INSTALL_SYSPKGS: python3-venv
       # system git-annex is way too old, use better one
       INSTALL_GITANNEX: git-annex -m deb-url --url http://snapshot.debian.org/archive/debian/20201228T023115Z/pool/main/g/git-annex/git-annex_8.20201127-1_amd64.deb
 
@@ -137,10 +128,10 @@ install:
   # https://help.appveyor.com/discussions/problems/28217-appveyor-ubunu-image-with-python3-lzma-module
   # Otherwise create a virtualenv using the default Python 3, to enable uniform
   # use of python/pip executables below
-  - sh: "[ \"x$PY\" != x ] && . ${HOME}/venv${PY}/bin/activate || virtualenv -p 3 ${HOME}/dlvenv && . ${HOME}/dlvenv/bin/activate; ln -s \"$VIRTUAL_ENV\" \"${HOME}/VENV\""
+  - sh: "[ \"x$PY\" != x ] && . ${HOME}/venv${PY}/bin/activate || python${PY} -m venv ${HOME}/dlvenv && . ${HOME}/dlvenv/bin/activate; ln -s \"$VIRTUAL_ENV\" \"${HOME}/VENV\""
   - cmd: "set PATH=C:\\Python%PY%;C:\\Python%PY%\\Scripts;%PATH%"
   # Missing system software
-  - sh: "[ -n \"$INSTALL_SYSPKGS\" ] && ( [ \"x${APPVEYOR_BUILD_WORKER_IMAGE}\" = \"xmacos-monterey\" ] && brew install -q ${INSTALL_SYSPKGS} || sudo apt-get install --no-install-recommends -y ${INSTALL_SYSPKGS} ) || true"
+  - sh: "[ -n \"$INSTALL_SYSPKGS\" ] && ( [ \"x${APPVEYOR_BUILD_WORKER_IMAGE}\" = \"xmacos-monterey\" ] && brew install -q ${INSTALL_SYSPKGS} || { sudo apt-get update; sudo apt-get install --no-install-recommends -y ${INSTALL_SYSPKGS} ; } ) || true"
   - python -m pip install .
 
 test_script:

.github/workflows/release.yml

@@ -30,7 +30,7 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@v5
         with:
-          python-version: '^3.7'
+          python-version: '^3.9'
 
       - name: Install Python dependencies
         run: python -m pip install build bump2version twine

.github/workflows/test.yml

@@ -28,13 +28,11 @@ jobs:
           - windows-latest
           - ubuntu-latest
         python-version:
-          - '3.7'
-          - '3.8'
           - '3.9'
           - '3.10'
           - '3.11'
           - '3.12'
-          - 'pypy-3.8'
+          - 'pypy-3.10'
           # Avoid PyPy 7.3.16, as the tests currently fail on it due to a bug
           # in it and/or tox: <https://github.com/pypy/pypy/issues/4958>,
           # <https://github.com/tox-dev/tox/issues/3284>
@@ -43,13 +41,13 @@ jobs:
         toxenv: [py]
         exclude:
           # Not available on arm64 macos-latest:
-          - python-version: '3.7'
+          - python-version: '3.9'
             os: macos-latest
         include:
-          - python-version: '3.7'
+          - python-version: '3.9'
             toxenv: lint
             os: ubuntu-latest
-          - python-version: '3.7'
+          - python-version: '3.9'
             toxenv: typing
             os: ubuntu-latest
     steps:

.pre-commit-config.yaml

@@ -17,7 +17,7 @@ repos:
     hooks:
     -   id: isort
 -   repo: https://github.com/PyCQA/flake8
-    rev: 6.0.0
+    rev: 7.1.1
     hooks:
       - id: flake8
         additional_dependencies:

setup.cfg

@@ -26,8 +26,6 @@ classifiers =
     #Development Status :: 5 - Production/Stable
     Programming Language :: Python :: 3 :: Only
     Programming Language :: Python :: 3
-    Programming Language :: Python :: 3.7
-    Programming Language :: Python :: 3.8
     Programming Language :: Python :: 3.9
     Programming Language :: Python :: 3.10
     Programming Language :: Python :: 3.11
@@ -53,7 +51,7 @@ py_modules = datalad_installer
 package_dir =
     =src
 include_package_data = True
-python_requires = >= 3.7
+python_requires = >= 3.9
 
 [options.entry_points]
 console_scripts =

test/test_install.py

@@ -60,10 +60,6 @@ def test_install_miniconda(tmp_path: Path) -> None:
     )
 
 
-@pytest.mark.skipif(
-    sys.version_info[:2] == (3, 12),
-    reason="Python 3.12 not yet available on Conda",
-)
 @pytest.mark.miniconda
 def test_install_miniconda_python_match(tmp_path: Path) -> None:
     miniconda_path = tmp_path / "conda"