typecheck.yml

name: Type Check

on:
  push:
    branches:
      - main
    paths:
      - 'src/**'
      - 'tests/**'
      - '.github/workflows/typecheck.yml'
  pull_request:
    branches:
      - main
    paths:
      - 'src/**'
      - 'tests/**'
      - '.github/workflows/typecheck.yml'
  workflow_dispatch:

defaults:
  run:
    shell: bash

jobs:
  mypy:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Setup Python
        uses: actions/setup-python@v5
        with:
          python-version: "3.12"

      - name: Install pipx
        run: python -m pip install pipx

      - name: Install poetry
        run: pipx install poetry

      - name: Setup a local virtual environment
        run: |
          poetry config virtualenvs.create true --local
          poetry config virtualenvs.in-project true --local

      - uses: actions/cache@v4
        name: Define a cache for the venv based on the dependencies lock file
        with:
          key: ubuntu-latest-3.12-${{ hashFiles('poetry.lock') }}
          path: ./.venv

      - name: Install the project dependencies
        run: poetry install --all-extras

      - name: Run mypy
        run: poetry run mypy .