Renovate Bot
103 lines
4.6 KiB
YAML
103 lines
4.6 KiB
YAML
# Flake CI: full `nix flake check` (formatting + deadnix + statix + pre-commit)
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# plus an explicit per-host evaluation pass for granular output.
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name: CI
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# Deliberately no `paths:` filter. This job is a required status check on main,
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# and a path-filtered workflow is *skipped* (never runs) for PRs that touch no
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# matching file -- which leaves the required check pending forever and blocks the
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# merge (e.g. a .renovaterc.json-only change). So the workflow always runs and
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# always reports. To avoid burning a full Nix evaluation on changes that can't
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# affect it, the "detect" step below diffs the PR and the heavy steps run only
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# when a .nix file, flake.lock, or this workflow changed; otherwise they skip and
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# the job still passes. The required check is therefore always green-reportable.
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on:
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push:
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branches: [main]
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pull_request:
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jobs:
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flake:
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runs-on: ubuntu-latest
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steps:
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- name: Checkout
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uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7
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with:
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# Full history so the detect step can diff the PR against its base.
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fetch-depth: 0
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# Decide whether the Nix steps need to run. On a pull_request, diff the PR
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# against its base and look for files that can affect the flake: any .nix,
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# the lockfile, or this workflow. On any other event (push to main) always
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# run. The job itself always succeeds, so the required status check is
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# reported even when the heavy steps are skipped.
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- name: Detect Nix-relevant changes
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id: detect
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run: |
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set -euo pipefail
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if [ "${{ github.event_name }}" != "pull_request" ]; then
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echo "Event ${{ github.event_name }}: running full checks."
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echo "run=true" >> "$GITHUB_OUTPUT"
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exit 0
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fi
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base='${{ github.event.pull_request.base.sha }}'
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head='${{ github.event.pull_request.head.sha }}'
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changed=$(git diff --name-only "$base...$head")
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echo "Changed files:"
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echo "$changed"
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if echo "$changed" | grep -Eq '(\.nix$|^flake\.lock$|^\.gitea/workflows/ci\.yaml$)'; then
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echo "Nix-relevant changes found: running checks."
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echo "run=true" >> "$GITHUB_OUTPUT"
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else
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echo "No Nix-relevant changes: skipping checks (job still passes)."
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echo "run=false" >> "$GITHUB_OUTPUT"
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fi
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- name: Install Nix
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if: steps.detect.outputs.run == 'true'
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uses: cachix/install-nix-action@8aa03977d8d733052d78f4e008a241fd1dbf36b3 # v31
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with:
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extra_nix_config: |
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experimental-features = nix-command flakes
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accept-flake-config = true
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substituters = https://cache.nixos.org https://nix-community.cachix.org
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trusted-public-keys = cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY= nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs=
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# Runs every flake check: treefmt formatting, deadnix, statix, and the
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# pre-commit hooks (so a --no-verify commit can't ship unlinted).
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- name: Flake check
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if: steps.detect.outputs.run == 'true'
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run: nix flake check --print-build-logs
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# Evaluate (not build) each host's toplevel so eval errors fail CI cheaply.
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# aarch64 / darwin hosts evaluate fine on an x86_64 runner; only building
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# would need emulation, which we deliberately avoid here.
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#
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# Host lists are discovered from the flake (attrNames of
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# nixos/darwinConfigurations) rather than hard-coded, so adding or removing
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# a host needs no change to this workflow.
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- name: Evaluate NixOS host configurations
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if: steps.detect.outputs.run == 'true'
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run: |
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set -euo pipefail
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hosts=$(nix eval --raw '.#nixosConfigurations' \
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--apply 'cfgs: builtins.concatStringsSep "\n" (builtins.attrNames cfgs)')
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for host in $hosts; do
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echo "::group::eval $host"
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nix eval --raw ".#nixosConfigurations.$host.config.system.build.toplevel.drvPath"
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echo
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echo "::endgroup::"
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done
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- name: Evaluate Darwin host configurations
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if: steps.detect.outputs.run == 'true'
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run: |
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set -euo pipefail
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hosts=$(nix eval --raw '.#darwinConfigurations' \
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--apply 'cfgs: builtins.concatStringsSep "\n" (builtins.attrNames cfgs)')
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for host in $hosts; do
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echo "::group::eval $host"
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nix eval --raw ".#darwinConfigurations.$host.config.system.build.toplevel.drvPath"
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echo
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echo "::endgroup::"
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done
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