subtree_push.yml

name: Git Subtree Push
on:
  workflow_dispatch:
    inputs:
      rustlang_rust_url:
        description: 'rust-lang/rust repository URL'
        default: 'https://github.com/rust-lang/rust'
        required: true

jobs:
  subtree-push:
    runs-on: ubuntu-latest

    steps:
    - name: checkout
      uses: actions/checkout@v4
      with:
        # 0 indicates all history for all branches and tags.
        # https://github.com/actions/checkout?tab=readme-ov-file#fetch-all-history-for-all-tags-and-branches
        # Grabbing everything should help us avoid issues where `git commit --no-ff` complains that
        # it can't merge unrelated histories.
        fetch-depth: 0

    # Based on https://github.com/rust-lang/rustup/issues/3409
    # rustup should already be installed in GitHub Actions.
    - name: install current toolchain with rustup
      run: |
        CURRENT_TOOLCHAIN=$(cut -d ' ' -f3 <<< $(cat rust-toolchain | grep "channel =") | tr -d '"')
        rustup install $CURRENT_TOOLCHAIN --no-self-update

    - name: Setup Rustfmt Bot Git Details
      run: |
        git config user.name "rustfmt bot"
        git config user.email "rustfmt@sync.bot"

    - name: subtree-push
      env:
        # Need to set the `GH_TOKEN` env variable so we can use the GitHub CLI in `/ci/subtree_sync.sh`
        GH_TOKEN: ${{ github.token }}
      run: ${GITHUB_WORKSPACE}/ci/subtree_sync.sh subtree-push ${{ inputs.rustlang_rust_url }}