block-merge.yml

# Copyright 2026 Google LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

name: Do Not Merge on GitHub

on:
  pull_request:
    types: [opened, reopened, synchronize]

jobs:
  block-merge:
    name: maintainers will submit via Copybara
    runs-on: ubuntu-latest
    steps:
      - name: Explain why merging is blocked
        run: |
          echo "::error title=GitHub merge is disabled::Do NOT merge this pull request on GitHub. A maintainer will land the change internally, and Copybara will sync it back to this repository automatically."
          exit 1