name: Format meson files

on:
  push:
  pull_request:

permissions: {}

jobs:
  muon-meson-fmt:
    name: Format
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@main
        with:
          persist-credentials: false

      # Build from source because Ubuntu 24.04 apt only has muon 0.2.0.
      # Newer muons seem to format differently.
      - name: Build muon from source
        run: |
          git clone --depth 1 --branch 0.5.0 https://github.com/muon-build/muon /tmp/muon
          cd /tmp/muon
          ./bootstrap.sh build
          build/muon-bootstrap setup build
          build/muon-bootstrap -C build samu
          sudo build/muon -C build install

      - name: Run muon fmt
        run: |
          find . -name meson.build -print0 | xargs -0 muon fmt -c .muon_fmt.ini -i
          git diff --exit-code