Make allowances truly transitive #29

	name: CI

	on:
	pull_request:
	push:
	branches:
	- main

	jobs:
	test:
	name: Tests and linting (Elixir ${{ matrix.pair.elixir }}, OTP ${{ matrix.pair.otp }})
	runs-on: ubuntu-20.04
	env:
	MIX_ENV: test
	GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
	strategy:
	fail-fast: false
	matrix:
	include:
	- pair:
	elixir: "1.11"
	otp: "21.3"
	- pair:
	elixir: "1.16"
	otp: "26.1"
	lint: true
	coverage: true
	steps:
	- name: Check out this repository
	uses: actions/checkout@v4

	- name: Install Erlang and Elixir
	uses: erlef/setup-beam@v1
	with:
	otp-version: ${{ matrix.pair.otp }}
	elixir-version: ${{ matrix.pair.elixir }}

	- name: Cache compiled code and dependencies
	uses: actions/cache@v4
	with:
	path: \|
	deps
	_build
	key: \|
	${{ runner.os }}-mix-${{ matrix.pair.elixir }}-${{ matrix.pair.otp }}-${{ hashFiles('**/mix.lock') }}-${{ github.run_id }}
	restore-keys: \|
	${{ runner.os }}-mix-${{ matrix.pair.elixir }}-${{ matrix.pair.otp }}-${{ hashFiles('**/mix.lock') }}
	${{ runner.os }}-mix-${{ matrix.pair.elixir }}-${{ matrix.pair.otp }}-

	- name: Fetch dependencies
	run: mix deps.get --check-lock

	- name: Check formatting
	run: mix format --check-formatted
	if: ${{ matrix.lint }}

	- name: Check unused dependencies
	run: mix deps.unlock --check-unused
	if: ${{ matrix.lint }}

	- name: Compile dependencies
	run: mix deps.compile

	- name: Compile and check for warnings
	run: mix compile --warnings-as-errors
	if: ${{ matrix.lint }}

	- name: Run tests
	run: \|
	if [ ${{ matrix.coverage }} == "true" ]; then
	mix coveralls.github
	else
	mix test
	fi

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