cygwin-test.yml

name: import-cygwin

on:
  push:
    branches: [main]
  pull_request:
  workflow_dispatch:

permissions:
  contents: read

jobs:
  test:
    runs-on: windows-latest

    env:
      CHERE_INVOKING: "1"
      CYGWIN_NOWINPATH: "1"
      GIT_PYTHON_BACKEND: cli

    defaults:
      run:
        shell: C:\cygwin\bin\bash.exe --login --norc -eo pipefail -o igncr "{0}"

    steps:
    - name: Force LF line endings
      run: |
        git config --global core.autocrlf false  # Affects the non-Cygwin git.
      shell: pwsh  # Do this outside Cygwin, to affect actions/checkout.

    - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
      with:
        fetch-depth: 0
        persist-credentials: false

    - name: Install Cygwin
      uses: cygwin/cygwin-install-action@3f0a3f9f988f7e96b8c18098ae05eaec175f5b52 # v6.0.2
      with:
        packages: >-
          curl gcc-core git libcurl-devel libexpat-devel libiconv-devel
          libssl-devel make python39 python-setuptools-wheel zlib-devel
        add-to-path: false  # No need to change $PATH outside the Cygwin environment.

    - name: Arrange for verbose output
      run: |
        # Arrange for verbose output but without shell environment setup details.
        echo 'set -x' >~/.bash_profile

    - name: Build minimum supported Cygwin Git
      run: |
        # Cygwin's packaged Git is older than our minimum supported version.
        git clone --depth 1 --branch v2.52.0 -- https://github.com/git/git.git /tmp/git-source
        # Use Cygwin's normal prefix: GitPython checks for uname next to git.
        make -C /tmp/git-source -j2 prefix=/usr NO_GETTEXT=YesPlease NO_TCLTK=YesPlease NO_PERL=YesPlease install
        hash -r
        test "$(git version)" = 'git version 2.52.0'

    - name: Special configuration for Cygwin git
      run: |
        git config --global --add safe.directory "$(pwd)"
        git config --global --add safe.directory "$(pwd)/.git"
        git config --global core.autocrlf false

    - name: Prepare this repo for tests
      run: |
        ./init-tests-after-clone.sh

    - name: Set git user identity and command aliases for the tests
      run: |
        git config --global user.email "travis@ci.com"
        git config --global user.name "Travis Runner"
        # If we rewrite the user's config by accident, we will mess it up
        # and cause subsequent tests to fail
        cat test/fixtures/.gitconfig >> ~/.gitconfig

    - name: Set up virtual environment
      run: |
        pip_wheel=/usr/share/python-wheels/pip-26.0.1-py3-none-any.whl
        curl -fsSLo "$pip_wheel" https://files.pythonhosted.org/packages/de/f0/c81e05b613866b76d2d1066490adf1a3dbc4ee9d9c839961c3fc8a6997af/pip-26.0.1-py3-none-any.whl
        python3.9 -c 'import hashlib, pathlib, sys; assert hashlib.sha256(pathlib.Path(sys.argv[1]).read_bytes()).hexdigest() == sys.argv[2]' "$pip_wheel" bdb1b08f4274833d62c1aa29e20907365a2ceb950410df15fc9521bad440122b
        python3.9 -m venv .venv
        echo 'BASH_ENV=.venv/bin/activate' >>"$GITHUB_ENV"

    - name: Update PyPA packages
      run: |
        python -m pip install -U 'setuptools; python_version<"3.12"' wheel

    - name: Install project
      run: |
        pip install ./smmap ./gitdb .

    - name: Verify Cygwin Git detection
      run: python -c 'from git import Git; assert Git.is_cygwin()'

    - name: Show POSIX file ownership
      # Cygwin's `ls -ld` reports the NTFS Owner SID via Cygwin's SID-to-uid
      # mapping (well-known SIDs by their RID, machine-local accounts by
      # 0x30000+RID). That mapping is what Cygwin git's
      # `is_path_owned_by_current_user` reduces to, so this is the view that
      # determines whether `safe.directory` is consulted.
      run: |
        ls -ld -- \
          "$(pwd)" \
          "$(pwd)/.git" \
          "${HOME:?HOME is not set}/.gitconfig" \
          2>&1 || true

    - name: Show NTFS file ownership
      # Authoritative NTFS Owner via Get-Acl, with no Cygwin SID-to-uid layer
      # in between -- useful for confirming what the Cygwin view reports as
      # "Administrators" is the BUILTIN\Administrators SID (S-1-5-32-544).
      shell: pwsh
      run: |
        $paths = @(
          "$pwd",
          "$pwd\.git",
          "$env:USERPROFILE\.gitconfig"
        )
        foreach ($p in $paths) {
          if (Test-Path -LiteralPath $p) {
            try {
              $owner = (Get-Acl -LiteralPath $p).Owner
            } catch {
              $owner = "ERROR: $($_.Exception.Message)"
            }
            "{0,-44}  {1}" -f $owner, $p
          } else {
            "(missing: $p)"
          }
        }

    - name: Show safe.directory entries
      run: git config --global --get-all safe.directory

    - name: Show version and platform information
      run: |
        uname -a
        command -v git python
        git version
        python --version
        python -c 'import os, sys; print(f"{sys.platform=}, {os.name=}")'

    - name: Smoke check the installed package on Python 3.9
      run: python -I -c "import git; from git import _backend; assert _backend.name == 'cli'; print(git.__version__)"