Use constraints to install development HEADs #42

	name: Run tests

	on:
	push:
	branches: ['main']
	pull_request:

	jobs:
	setup:
	runs-on: ubuntu-latest
	outputs:
	strategy: ${{steps.load.outputs.strategy}}

	steps:
	- uses: actions/checkout@v2
	- id: load
	run: echo "::set-output name=strategy::$(echo $(cat strategy.json))"

	canary:
	needs: [setup]
	strategy: ${{fromJson(needs.setup.outputs.strategy)}}
	runs-on: ${{matrix.os}}

	steps:
	- uses: actions/checkout@v2
	with:
	# Choose colcon-notification for a canary build. It has colcon
	# dependencies and debian patches, so exercieses a fair amount of the
	# CI action features.
	repository: colcon/colcon-notification
	- uses: actions/setup-python@v2
	with:
	python-version: ${{matrix.python}}
	- uses: actions/checkout@v2
	with:
	path: colcon_ci
	- uses: ./colcon_ci/

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