Git Subtree Push #19

	name: Git Subtree Push
	on:
	workflow_dispatch:
	inputs:
	rustlang_rust_url:
	description: 'rust-lang/rust repository URL'
	default: 'https://github.com/rust-lang/rust'
	required: true

	jobs:
	subtree-push:
	runs-on: ubuntu-latest

	steps:
	- name: checkout
	uses: actions/checkout@v4
	with:
	# 0 indicates all history for all branches and tags.
	# https://github.com/actions/checkout?tab=readme-ov-file#fetch-all-history-for-all-tags-and-branches
	# Grabbing everything should help us avoid issues where `git commit --no-ff` complains that
	# it can't merge unrelated histories.
	fetch-depth: 0

	# Based on https://github.com/rust-lang/rustup/issues/3409
	# rustup should already be installed in GitHub Actions.
	- name: install current toolchain with rustup
	run: \|
	CURRENT_TOOLCHAIN=$(cut -d ' ' -f3 <<< $(cat rust-toolchain \| grep "channel =") \| tr -d '"')
	rustup install $CURRENT_TOOLCHAIN --no-self-update

	- name: Setup Rustfmt Bot Git Details
	run: \|
	git config user.name "rustfmt bot"
	git config user.email "[email protected]"

	- name: subtree-push
	env:
	# Need to set the `GH_TOKEN` env variable so we can use the GitHub CLI in `/ci/subtree_sync.sh`
	GH_TOKEN: ${{ github.token }}
	run: ${GITHUB_WORKSPACE}/ci/subtree_sync.sh subtree-push ${{ inputs.rustlang_rust_url }}

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