sync-flake-lock.yml

name: sync-flake-lock-and-rust-toolchain

on:
  workflow_dispatch:

defaults:
  run:
    shell: bash -xe {0}

permissions:
  contents: write
  pull-requests: write

jobs:
  sync-flake-lock:
    runs-on: ubuntu-24.04
    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 1

      - uses: nixbuild/nix-quick-install-action@v30
        with:
          github_access_token: ${{ secrets.GITHUB_TOKEN }}
          nix_conf: |
            extra-substituters = https://cache.garnix.io
            extra-trusted-public-keys = cache.garnix.io:CTFPyKSLcx5RMJKfLo5EEPUObbA78b0YQ2DTCJXqr9g
      - name: Populate the nix store
        run: |
          nix develop --command echo

      - name: Sync flake.lock and rust-toolchain.toml from upstream
        run: |
          curl https://raw.githubusercontent.com/obeli-sk/obelisk/refs/heads/latest/flake.lock -o flake.lock
          curl https://raw.githubusercontent.com/obeli-sk/obelisk/refs/heads/latest/rust-toolchain.toml -o rust-toolchain.toml

      - name: Update dev-deps.txt
        run: |
          nix develop . --command ./scripts/dev-deps.sh

      - name: Generate Unique Branch Name
        id: branch-name
        run: echo "branch_name=sync-flake-lock-$(date +'%Y%m%d-%H%M%S')" >> $GITHUB_OUTPUT

      - name: Configure Git
        run: |
          git config user.name "github-actions[bot]"
          git config user.email "github-actions[bot]@users.noreply.github.com"

      - name: Commit Changes
        run: |
          git checkout -b ${{ steps.branch-name.outputs.branch_name }}
          git add .
          if [ -n "$(git status --porcelain)" ]; then
              git commit -m 'chore: Sync `flake.lock` from upstream'
              git push origin ${{ steps.branch-name.outputs.branch_name }}

              OWNER=$(echo "${{ github.repository }}" | cut -d'/' -f1)
              REPO=$(echo "${{ github.repository }}" | cut -d'/' -f2)
              curl -v --fail -X POST \
                -H "Content-Type: application/json" \
                -H "Authorization: Bearer $GITHUB_TOKEN" \
                https://api.github.com/repos/$OWNER/$REPO/pulls \
                -d '{
                  "title": "Sync `flake.lock` from upstream",
                  "head": "'${{ steps.branch-name.outputs.branch_name }}'",
                  "base": "main",
                  "body": ""
                }'
          else
              echo "No changes to commit."
          fi
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}