Add lint and mypy CI jobs #2

	# This workflow will install Python dependencies and run MyPy

	name: MyPy Type Checking

	on: [pull_request]

	permissions:
	contents: read

	jobs:
	build:
	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@v4
	- name: Set up Python 3.10
	id: setup_python
	uses: actions/setup-python@v5
	with:
	python-version: "3.10"
	- name: Restore Virtualenv
	uses: actions/cache/restore@v4
	id: cache-venv-restore
	with:
	path: ./.venv/
	key: ${{ runner.os }}-${{ steps.setup_python.outputs.python-version }}-venv-${{ hashFiles('*requirements.txt') }}
	restore-keys: \|
	${{ runner.os }}-${{ steps.setup_python.outputs.python-version }}-venv-
	- name: Install dependencies
	run: \|
	# Create the virtual environment
	python -m venv .venv
	. ./.venv/bin/activate

	# Install the dependencies
	# In case of a cache hit on the primary key, this will be a no-op
	# In case of a cache miss, but hit on a secondary key, this will update what's changed
	python -m pip install --upgrade pip
	pip install -r test-requirements.txt

	# Enables the virtual env for following steps
	echo "$VIRTUAL_ENV/bin" >> $GITHUB_PATH
	echo "VIRTUAL_ENV=$VIRTUAL_ENV" >> $GITHUB_ENV

	- name: Test with pytest
	run: \|
	# No type stubs available for "fire" and "transformers"
	mypy --exclude fms_to_hf.py --exclude main_training.py .

	- name: Save Virtualenv
	id: cache-venv-save
	uses: actions/cache/save@v4
	with:
	path: ./.venv/
	key: ${{ steps.cache-venv-restore.outputs.cache-primary-key }}

Provide feedback