haddock-project fixes (backport #8919) #1088

	name: Assorted

	on:
	push:
	branches:
	- master
	paths:
	- 'changelog.d/*'
	- '.github/workflows/changelogs.yml'
	pull_request:
	paths:
	- 'changelog.d/*'
	- '.github/workflows/changelogs.yml'
	release:
	types:
	- created

	defaults:
	run:
	shell: bash

	jobs:
	build:
	name: Changelogs
	runs-on: ubuntu-latest

	steps:
	- name: Set PATH
	# https://docs.github.com/en/free-pro-team@latest/actions/reference/workflow-commands-for-github-actions#adding-a-system-path
	run: \|
	echo "$HOME/.cabal/bin" >> $GITHUB_PATH
	- uses: actions/cache@v3
	with:
	path: ~/.cabal/store
	key: linux-store-changelogs
	# See https://github.com/haskell/cabal/pull/8739
	- name: Sudo chmod to permit ghcup to update its cache
	run: \|
	if [[ "${{ 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
	- name: ghcup
	run: \|
	ghcup config set cache true
	ghcup install ghc recommended
	ghcup set ghc recommended
	- name: Update Hackage index
	run: cabal v2-update
	# Cannot install it from tarball due to
	# https://github.com/haskell/cabal/issues/7360
	- uses: actions/checkout@v3
	with:
	repository: "fgaz/changelog-d"
	path: "changelog-d"
	- name: Install changelog-d
	run: \|
	pushd changelog-d
	cabal v2-install
	popd
	- uses: actions/checkout@v3
	- name: Run changelog-d
	run: \|
	changelog-d changelog.d

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