check compatibility with GHC prereleases #9
Workflow file for this run
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| name: Check GHC prereleases | |
| # See: https://docs.github.com/en/actions/reference/workflow-syntax-for-github-actions#concurrency. | |
| concurrency: | |
| group: ${{ github.ref }}-${{ github.workflow }} | |
| cancel-in-progress: true | |
| on: | |
| push: | |
| branches: | |
| - master | |
| pull_request: | |
| release: | |
| types: | |
| - created | |
| jobs: | |
| # Make sure we support the latest prerelease GHC. This means validating that Cabal doesn't | |
| # output a warning that the GHC is too new. | |
| # | |
| # It's generally pointless to run this when not around a release, but there's no good way | |
| # to automate checking for that so we just run pointlessly. (If it doesn't succeed, we have | |
| # bigger problems.) | |
| ghc-prerelease: | |
| name: Check compatibility with latest GHC prerelease | |
| runs-on: ubuntu-latest | |
| steps: | |
| # install both ghc versions (release and prerelease) | |
| # note that there is no way to access the actual version of the prerelease | |
| # *or* a version-specific binary location (no, `ghc-version` doesn't work; it | |
| # regurgitates the input version unchanged, which in our case is a ghcup tag), | |
| # so we must install it second and rely on it being the default ghc. Since we | |
| # know the version of the other ghc, we *can* access it. | |
| - uses: haskell-actions/setup@v2 | |
| id: release-ghc | |
| with: | |
| # NOTE: for CI rewrite, use GHC_FOR_RELEASE | |
| ghc-version: "9.4.8" | |
| cabal-version: latest | |
| # setup overwrites ghc, so we have to do this first *and* use the ghc-path output | |
| # (not ghc-exe, which points to the overwritten ghc which is usually the wrong one) | |
| - uses: haskell-actions/setup@v2 | |
| id: prerelease-ghc | |
| with: | |
| ghc-version: latest-prerelease | |
| ghcup-release-channel: "https://raw.githubusercontent.com/haskell/ghcup-metadata/master/ghcup-prereleases-0.0.8.yaml" | |
| # first, build cabal-install | |
| - uses: actions/checkout@v4 | |
| # use the release project to silence the prerelease warning, to make | |
| # checking for the too-new-GHC warning easier | |
| - run: cabal build cabal --project-file=cabal.release.project -w ghc-${{ steps.release-ghc.outputs.ghc-version }} | |
| # dry run build of Cabal with the prerelease | |
| # if there is a problem, the first two lines of the output will be a warning | |
| # note: as above, we must use the default ghc here because we can't get the | |
| # prerelease's actual name | |
| - run: $(cabal list-bin cabal -w ghc-${{ steps.release-ghc.outputs.ghc-version }}) build Cabal --dry-run -w ghc 2>&1 | tee build.log | |
| shell: bash | |
| - run: | | |
| if grep -q unknown/unsupported build.log; then | |
| echo Cabal does not support latest GHC prerelease | |
| exit 1 | |
| fi | |
| exit 0 | |
| shell: bash |