refactor: More directory layout refactoring #12797

	name: Detect differences (PR only)

	on:
	pull_request:
	types: [opened, synchronize, reopened]

	jobs:

	diff:
	runs-on: ubuntu-latest
	env:
	DOTNET_NOLOGO: true
	permissions:
	pull-requests: write

	steps:
	- uses: actions/checkout@v4
	with:
	submodules: true
	fetch-depth: 100

	# The GitHub checkout action leaves the repo in a slightly awkward
	# state. This tidies it up.
	- name: Set up git branches
	run: \|
	git checkout -b pr-head
	git checkout -b main ${{ github.event.pull_request.base.sha }}
	git checkout pr-head

	- name: Setup .NET 6.0
	uses: actions/setup-dotnet@v4
	with:
	dotnet-version: 6.0.x

	- name: Detect PR changes
	env:
	ALLOW_BREAKING_CHANGES: ${{contains(github.event.pull_request.labels.*.name, 'allow breaking changes')}}
	run: \|
	if [[ $ALLOW_BREAKING_CHANGES == "true" ]]
	then
	SCRIPT_OPTION=--allow-breaking-changes
	fi

	# Run the diff, recording the results
	echo "Pull request diff results" >> diff.txt
	set -o pipefail
	./detect-pr-changes.sh $SCRIPT_OPTION 2>&1 \| tee -a diff.txt
	set +o pipefail

	# The purpose of (success() \|\| failure()) in the condition is to
	# make sure we post a comment on both success and failure, but not
	# if the job is cancelled.
	- name: Post diff as a comment for branches on target fork
	if: (success() \|\| failure()) && github.event.pull_request.head.repo.full_name == github.repository
	run: \|
	./prepare-release.sh add-pr-comment diff.txt \
	${{github.event.pull_request.number }} \
	${{secrets.GITHUB_TOKEN}}

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