name: LintMypy

on:
  push:
    paths:
    - "**.py"
    - ".github/workflows/lint_mypy.yml"
  pull_request:
    paths:
    - "**.py"
    - ".github/workflows/lint_mypy.yml"

jobs:

  lint:
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v2
    - uses: actions/setup-python@v2
      with:
        python-version: '3.x'
    # pylint version constraint can be removed when https://github.com/PyCQA/pylint/issues/3524 is resolved
    - run: python -m pip install pylint==2.4.4
    - run: pylint mesonbuild

  mypy:
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v2
    - uses: actions/setup-python@v2
      with:
        python-version: '3.x'
    - run: python -m pip install mypy
    - run: python run_mypy.py