spotatui/.github/workflows/nix.yml at main · LargeModGames/spotatui · GitHub

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# Nix packaging is only exercised when the inputs that can break it change,
# because `nix build` compiles the whole crate and is far too slow to run on
# every PR. Keep this list in sync with anything the flake reads.
on:
  pull_request:
    paths:
      - "flake.nix"
      - "flake.lock"
      - "Cargo.toml"
      - "Cargo.lock"
      - ".github/workflows/nix.yml"
  push:
    branches: [main]
    paths:
      - "flake.nix"
      - "flake.lock"
      - "Cargo.toml"
      - "Cargo.lock"
      - ".github/workflows/nix.yml"

name: Nix

permissions:
  contents: read

jobs:
  flake:
    name: Flake
    runs-on: ubuntu-latest
    # A cold `nix build` of the full default feature set (librespot included)
    # is the long pole here.
    timeout-minutes: 60
    if: |
      !contains(format('{0} {1} {2}', github.event.head_commit.message, github.event.pull_request.title, github.event.pull_request.body), '[skip ci]')
    steps:
      # Pinned to commit SHAs rather than tags or branches: a tag can be
      # retargeted, and this job runs `nix build`, so a compromised action would
      # be executing arbitrary code against the build. Dependabot already tracks
      # the `github-actions` ecosystem and reads the trailing version comment, so
      # these still get update PRs.
      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7
        with:
          # The job only reads the repo, so leaving GITHUB_TOKEN behind in the
          # local git config buys nothing.
          persist-credentials: false
      - uses: cachix/install-nix-action@630ae543ea3a38a9a4166f03376c02c50f408342 # v31.11.0
        with:
          extra_nix_config: |
            experimental-features = nix-command flakes

      # Catches outputs declared under the wrong attribute path. `devShells` and
      # `apps` nested inside `packages` evaluated fine but were invisible to Nix,
      # so `nix run` had no target and `nix develop` silently fell back to the
      # package derivation (#401). Evaluation only, no builds.
      - name: Check flake outputs
        run: nix flake check --all-systems --no-build

      # Direct regression guard for the above: the dev shell has to be reachable
      # *and* actually carry the Rust toolchain.
      - name: Dev shell provides the Rust toolchain
        run: nix develop --command cargo --version

      # The `librespot-*` entries in `cargoLock.outputHashes` pin the content of
      # the spotatui-librespot checkout, while the rev they correspond to lives
      # in Cargo.toml's [patch] block. Nothing links the two, so bumping the fork
      # without regenerating the hash breaks `nix build` for every Nix user, with
      # a fixed-output hash mismatch that never mentions the rev. Building here is
      # what catches that drift before it reaches main.
      - name: Build the package
        run: nix build --no-link --print-build-logs .#default