CI #4
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| # Copyright 2024 Google LLC | |
| # | |
| # Licensed under the Apache License, Version 2.0 (the "License"); | |
| # you may not use this file except in compliance with the License. | |
| # You may obtain a copy of the License at | |
| # | |
| # http://www.apache.org/licenses/LICENSE-2.0 | |
| # | |
| # Unless required by applicable law or agreed to in writing, software | |
| # distributed under the License is distributed on an "AS IS" BASIS, | |
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
| # See the License for the specific language governing permissions and | |
| # limitations under the License. | |
| # This workflow does double duty: it runs checks against PRs/pushes, and it | |
| # updates flake.lock (run from a schedule or manually). | |
| # | |
| # This approach seems simpler than having a separate lockfile-updating workflow | |
| # that creates a PR that gets the normal check workflow ran against it before | |
| # merging, especially since (according to | |
| # https://github.com/DeterminateSystems/update-flake-lock) GitHub Actions does | |
| # not run workflows against PRs created by a GitHub Action. | |
| name: CI | |
| on: | |
| push: | |
| pull_request: | |
| workflow_dispatch: | |
| inputs: | |
| updateFlakeLock: | |
| description: 'Update flake.lock' | |
| default: false | |
| type: boolean | |
| # To enable once confirmed working. | |
| # schedule: | |
| # - cron: '23 8 * * *' # runs daily at a randomly selected time | |
| jobs: | |
| check: | |
| runs-on: ubuntu-latest | |
| permissions: | |
| id-token: "write" | |
| contents: "read" | |
| steps: | |
| - name: Check out repository | |
| uses: actions/checkout@v4 | |
| - name: Install Nix | |
| uses: DeterminateSystems/nix-installer-action@main | |
| - name: Enable Magic Nix Cache | |
| uses: DeterminateSystems/magic-nix-cache-action@main | |
| - name: Update flake.lock | |
| if: github.event_name == 'schedule' || ( github.event_name == 'workflow_dispatch' && inputs.updateFlakeLock ) | |
| run: nix flake update --commit-lock-file | |
| - name: Check flake.lock | |
| uses: DeterminateSystems/flake-checker-action@main | |
| with: | |
| nixpkgs-keys: "" # TODO: check nixpkgs used for cached builds | |
| - name: Cache git checkouts | |
| uses: actions/cache@v4 | |
| with: | |
| path: ~/.cache/nix/gitv3 | |
| key: nix-gitv3-cache-${{ hashFiles('flake.lock') }} | |
| restore-keys: nix-gitv3-cache- | |
| - name: nix flake check | |
| run: nix flake check -L --show-trace | |
| - name: Push changes | |
| if: github.event_name == 'schedule' || ( github.event_name == 'workflow_dispatch' && inputs.updateFlakeLock ) | |
| run: git push | |
| # TODO: try to improve caching. | |
| # | |
| # We spend a lot of time fetching sources. Caching all of ~/.cache/nix/gitv3 is | |
| # not ideal: it is too large (3GiB) and we don't expire individual checkouts. | |
| # https://github.com/DeterminateSystems/magic-nix-cache/issues/28 may help. | |
| # | |
| # The "magic" nix cache hits usage limits: | |
| # | |
| # 2024-05-18T06:45:19.165515Z ERROR magic_nix_cache::gha: Upload of path '/nix/store/fpq1vaw8vr88a67lc2jspskf2fa7zbvj-emacs-treepy-20230715.2154' failed: GitHub API error: API error (429 Too Many Requests): StructuredApiError { message: "Request was blocked due to exceeding usage of resource 'Count' in namespace ''." } | |
| # | |
| # This might get better as the cache populates, as long as I don't hit size | |
| # limits. |