Avoid unnecessary rebuilding in CI #110

	name: Haskell CI

	on:
	push:
	branches: [develop, main, master]
	pull_request:
	branches: [develop, main, master]
	workflow_dispatch: # For manual triggering
	schedule:
	- cron: "3 14 15 * *" # 14:03 on the 15th of every month (UTC)

	jobs:
	build:

	runs-on: ubuntu-latest
	strategy:
	matrix:
	ghc: ['8.8.4', '8.10.7', '9.0.2', '9.2.8', '9.4.8', '9.6.4', '9.8.2']
	fail-fast: false

	name: Build with GHC ${{ matrix.ghc }}
	steps:

	- name: Checkout
	uses: actions/checkout@v4

	- name: Cache
	uses: actions/cache@v4
	env:
	cache-name: cache-cabal
	with:
	path: ~/.cabal
	key: ${{ runner.os }}-build-${{ env.cache-name }}-${{ hashFiles('*/.cabal') }}-${{ hashFiles('**/cabal.project') }}
	restore-keys: \|
	${{ runner.os }}-build-${{ env.cache-name }}-
	${{ runner.os }}-build-
	${{ runner.os }}-

	- name: Haskell setup
	uses: haskell-actions/setup@main
	with:
	ghc-version: ${{ matrix.ghc }}

	- name: Install native dependencies
	run: \|
	sudo apt-get update
	sudo apt-get install -y --no-install-recommends libcurl4-openssl-dev

	- name: Configure
	run: \|
	cabal update
	cabal configure --enable-tests --enable-benchmarks -f werror

	- name: Build dependencies
	run: cabal build --only-dependencies

	- name: Build
	run: cabal build all

	- name: Run tests
	run: cabal test all

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