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Commit 0e8c23c
ci: restore Cygwin virtual environments on Python 3.9
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Cygwin patches ensurepip to load setuptools and pip wheels from
`/usr/share/python-wheels`. The rolling python-pip-wheel package advanced to pip
26.2.1, which requires Python 3.10 or newer, so every Python 3.9 venv creation
failed—including the installation test's nested virtual environment.
Keep the single Cygwin lane on Python 3.9 because the regular matrix already
covers Python 3.12 and newer. Install Cygwin's setuptools wheel, download pip
26.0.1 from its immutable PyPI URL into ensurepip's shared wheel directory,
verify its SHA-256 digest, and avoid upgrading pip. This fixes all venv creation
without relying on a version that may disappear from rolling Cygwin mirrors.
Assisted-by: GPT 5.6
Co-authored-by: GPT 5.6 <codex@openai.com>1 parent 180b1ff commit 0e8c23c
1 file changed
Lines changed: 5 additions & 2 deletions
| Original file line number | Diff line number | Diff line change | |
|---|---|---|---|
@@ -45,7 +45,7 @@ jobs: | |||
| 45 | 45 | - name: Install Cygwin | |
| 46 | 46 | uses: cygwin/cygwin-install-action@v6 | |
| 47 | 47 | with: | |
| 48 | - packages: git python39 python-pip-wheel python-setuptools-wheel python-wheel-wheel | ||
| 48 | + packages: curl git python39 python-setuptools-wheel | ||
| 49 | 49 | add-to-path: false # No need to change $PATH outside the Cygwin environment. | |
| 50 | 50 | ||
| 51 | 51 | - name: Arrange for verbose output | |
@@ -73,12 +73,15 @@ jobs: | |||
| 73 | 73 | ||
| 74 | 74 | - name: Set up virtual environment | |
| 75 | 75 | run: | | |
| 76 | + pip_wheel=/usr/share/python-wheels/pip-26.0.1-py3-none-any.whl | ||
| 77 | + curl -fsSLo "$pip_wheel" https://files.pythonhosted.org/packages/de/f0/c81e05b613866b76d2d1066490adf1a3dbc4ee9d9c839961c3fc8a6997af/pip-26.0.1-py3-none-any.whl | ||
| 78 | + python3.9 -c 'import hashlib, pathlib, sys; assert hashlib.sha256(pathlib.Path(sys.argv[1]).read_bytes()).hexdigest() == sys.argv[2]' "$pip_wheel" bdb1b08f4274833d62c1aa29e20907365a2ceb950410df15fc9521bad440122b | ||
| 76 | 79 | python3.9 -m venv .venv | |
| 77 | 80 | echo 'BASH_ENV=.venv/bin/activate' >>"$GITHUB_ENV" | |
| 78 | 81 | ||
| 79 | 82 | - name: Update PyPA packages | |
| 80 | 83 | run: | | |
| 81 | - python -m pip install -U pip 'setuptools; python_version<"3.12"' wheel | ||
| 84 | + python -m pip install -U 'setuptools; python_version<"3.12"' wheel | ||
| 82 | 85 | ||
| 83 | 86 | - name: Install project and test dependencies | |
| 84 | 87 | run: | | |
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