Bump version #5

	name: Bump version

	on:
	workflow_dispatch:
	inputs:
	bump_rule:
	type: choice
	description: How to bump the project's version (see https://python-poetry.org/docs/cli/#version)
	options:
	- patch
	- minor
	- major
	- prepatch
	- preminor
	- premajor
	- prerelease
	required: true

	jobs:
	bump_version:
	name: "Bump version and create changelog"
	if: "!startsWith(github.event.head_commit.message, 'bump:')"
	runs-on: ubuntu-latest
	env:
	CI_COMMIT_EMAIL: "ci-runner@carpet-concentrations.invalid"
	steps:
	- name: Check out repository
	uses: actions/checkout@v3
	with:
	fetch-depth: 0
	token: "${{ secrets.PERSONAL_ACCESS_TOKEN }}"

	# towncrier imports the package as part of building so we have to
	# install the pacakage (to keep things slim, we only install the main
	# dependencies, which also means that we get a test that we can import
	# the package with only the compulsory dependencies installed for free)
	- uses: ./.github/actions/setup
	with:
	python-version: "3.11"
	venv-id: "bump"
	poetry-dependency-install-flags: "--only main"

	- name: Install towncrier
	run: \|
	poetry run pip install towncrier

	- name: Create bump and changelog

	run: \|
	BASE_VERSION=`poetry version -s`
	NEW_VERSION=`poetry version -s ${{ github.event.inputs.bump_rule }}`
	poetry run towncrier build --yes --version v$NEW_VERSION

	git config --global user.name "$GITHUB_ACTOR"
	git config --global user.email "$CI_COMMIT_EMAIL"

	git commit -a -m "bump: version $BASE_VERSION -> $NEW_VERSION"
	git tag v$NEW_VERSION
	git push && git push --tags
	echo "Bumped to version $NEW_VERSION"

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