haddock-project fixes (backport #8919) #1837

	name: Assorted

	on:
	push:
	branches:
	- master
	pull_request:
	release:
	types:
	- created
	jobs:
	check:
	name: Whitespace
	runs-on: ubuntu-latest

	env:
	fix-whitespace-ver: '0.0.10'

	steps:
	- uses: actions/checkout@v3
	name: Checkout sources

	- name: Create directory for binary
	run: \|
	mkdir -p $HOME/.local/bin

	- uses: actions/cache@v3
	name: Cache the binary
	id: cache
	with:
	path: "~/.local/bin"
	key: fix-whitespace-${{ env.fix-whitespace-ver }}

	# See https://github.com/haskell/cabal/pull/8739
	- name: Sudo chmod to permit ghcup to update its cache
	run: \|
	if [[ "${{ runner.os }}" == "Linux" ]]; then
	sudo mkdir -p /usr/local/.ghcup/cache
	sudo chown -R $USER /usr/local/.ghcup
	sudo chmod -R 777 /usr/local/.ghcup
	fi

	- uses: haskell/actions/setup@v2
	if: ${{ !steps.cache.outputs.cache-hit }}
	with:
	ghc-version: '9.2'
	cabal-version: latest

	- name: Install fix-whitespace
	if: ${{ !steps.cache.outputs.cache-hit }}
	run: \|
	cabal install --constraint=aeson==2.1.2.1 --ignore-project --install-method=copy --installdir=$HOME/.local/bin fix-whitespace-${{ env.fix-whitespace-ver }}
	strip $HOME/.local/bin/fix-whitespace

	- name: Check the whitespace issue
	run: \|
	$HOME/.local/bin/fix-whitespace --check

Provide feedback