Add pre-commit hook to stop linting errors being pushed. #5155

	name: Lint

	on:
	push:
	branches: [ main ]
	pull_request:
	branches: [ main ]
	workflow_dispatch:


	jobs:

	ufmt:
	name: Code formatting and sorting with ufmt
	runs-on: ubuntu-latest
	strategy:
	fail-fast: false
	steps:
	- uses: actions/checkout@v4
	- name: Set up Python
	uses: actions/setup-python@v5
	with:
	python-version: "3.10"
	- name: Install dependencies
	run: \|
	# pin dependencies to match Meta-internal versions
	pip install -r requirements-fmt.txt
	- name: ufmt
	run: \|
	ufmt diff .

	flake8:
	name: Lint with flake8
	runs-on: ubuntu-latest
	strategy:
	fail-fast: false
	steps:
	- uses: actions/checkout@v4
	- name: Set up Python
	uses: actions/setup-python@v5
	with:
	python-version: "3.10"
	- name: Install dependencies
	run: \|
	pip install flake8 flake8-docstrings
	- name: Flake8
	run: \|
	flake8

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