Suuport base < 4.21 (i.e. support GHC 9.10) #118

	name: CI

	on:
	pull_request:
	types: [synchronize, opened, reopened]
	push:
	branches: [main]
	schedule:
	# additionally run once per week (At 00:00 on Sunday) to maintain cache
	- cron: '0 0 * * 0'

	workflow_dispatch:

	jobs:
	build:
	name: ghc ${{ matrix.ghc }}
	runs-on: ubuntu-latest
	strategy:
	fail-fast: false
	matrix:
	# We must always use the latest version of cabal because
	# otherwise ghc-paths, which is a dependency of doctest,
	# can't be configured.
	cabal: ["3.10"]
	ghc:
	- "8.6.5"
	- "8.8.3"
	- "8.10.7"
	- "9.0.2"
	- "9.2.4"
	- "9.4.7"
	- "9.6.3"
	- "9.8.1"

	steps:
	- uses: actions/checkout@v4

	- uses: haskell-actions/[email protected]
	id: setup-haskell-cabal
	name: Setup Haskell
	with:
	ghc-version: ${{ matrix.ghc }}
	cabal-version: ${{ matrix.cabal }}

	- name: Configure
	run: \|
	cabal configure --enable-tests --enable-benchmarks --enable-documentation --test-show-details=direct --write-ghc-environment-files=always

	- name: Freeze
	run: \|
	cabal freeze


	- uses: actions/cache@v3
	name: Cache ~/.cabal/store
	with:
	path: ~/.cabal/store
	key: ${{ runner.os }}-${{ matrix.ghc }}-${{ hashFiles('cabal.project.freeze') }}

	- name: Install dependencies
	run: \|
	cabal build all --only-dependencies

	- name: Build
	run: \|
	cabal build all

	- name: Test
	run: \|
	cabal test all

	- name: Documentation
	run: \|
	cabal haddock all

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