Add linter in ci #18

	name: Haskell CI

	on:
	push:
	branches: [ "main" ]
	paths:
	- 'matrix-lib/**'
	- 'translator/**'
	- '.github/workflows/haskell.yml'
	pull_request:
	branches: [ "main" ]
	paths:
	- 'matrix-lib/**'
	- 'translator/**'
	- '.github/workflows/haskell.yml'

	permissions:
	contents: read

	jobs:
	build:

	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@v3
	- uses: actions/setup-haskell@v1
	with:
	ghc-version: '8.10.3'
	cabal-version: '3.2'

	- name: Cache
	uses: actions/cache@v3
	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: Install dependencies for matrix-lib
	run: \|
	cd ./matrix-lib
	cabal update
	cabal build --only-dependencies --enable-tests --enable-benchmarks
	- name: Build matrix-lib
	run: \|
	cd ./matrix-lib
	cabal build --enable-tests --enable-benchmarks all
	- name: Test
	run: \|
	cd ./matrix-lib
	cabal test matrix-lib-test
	- name: Install dependencies for translator
	run: \|
	cd ./translator
	cabal update
	cabal build --only-dependencies --enable-tests --enable-benchmarks
	- name: Build translator
	run: \|
	cd ./translator
	cabal build --enable-tests --enable-benchmarks all

	- name: Install hlint
	run: \|
	cabal update
	cabal install hlint
	hlint .

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