on:
  push:
    branches:
      - main
    paths:
      - '**/Cargo.toml'
      - '**/Cargo.lock'
      - '**/rust-toolchain.toml'
      - '**.rs'
      - .github/workflows/cargo-clippy.yml
  pull_request:
    paths:
      - '**/Cargo.toml'
      - '**/Cargo.lock'
      - '**/rust-toolchain.toml'
      - '**.rs'
      - .github/workflows/cargo-clippy.yml
concurrency:
  group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
  cancel-in-progress: true
name: cargo clippy
jobs:
  cargoclippy:
    name: cargo clippy
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: taiki-e/install-action@just
      - name: Use correct Rust toolchain
        shell: bash
        run: |
          [ -e rust-toolchain.toml ] || cp rust/rust-toolchain.toml ./
      - name: Install rust
        uses: actions-rust-lang/setup-rust-toolchain@v1
        with:
          cache-workspaces: rust
          components: clippy

      - name: Run clippy
        run: |
          cd rust
          just lint
      # If this fails, run "cargo check" to update Cargo.lock,
      # then add Cargo.lock to the PR.
      - name: Check Cargo.lock doesn't need updating
        run: |
          cargo check --locked || echo "Pls run cargo check and commit the changed Cargo.lock"
