Changes relative to base branch

[srolel]

Is your feature request related to a problem? Please describe.
I would like to lint only changed files, but lint them from the base branch.

Describe the solution you'd like
Omit changes relative to base branch.

Describe alternatives you've considered
Squashing when the action runs.

[trilom]

Hey @srolel -

I believe what you are talking about is covered here by providing a different pushBefore or pushAfter SHA, or a seperate prNumber.

Some ways I use this are in the lowest example on the readme where I use the head_commit.id from the commit to get the commit's PR number (merge request push) and get a list of files. You can then use that list to perform your action.

[RayBB]

The easiest way I've found to do this is in GitHub Actions use the pull_request event and prNumber: ${{ github.event.number }}

name: pre-commit
on:
  pull_request
jobs:
  pre-commit:
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v2
    - uses: actions/setup-python@v2
      with:
        python-version: 3.9
    - id: file_changes
      uses: trilom/[email protected]
      with:
        prNumber: ${{ github.event.number }}
        output: ' '
    - uses: pre-commit/[email protected]
      name: mypy
      with: 
        extra_args: mypy --files ${{ steps.file_changes.outputs.files }}