Offer uninstalled compiler as fallback with warning #1158

	# The purpose of this CI is to run tests in a platform where there is no
	# detected native package manager

	name: CI unsupported

	on:
	pull_request:
	paths-ignore:
	- 'doc/**'
	- '**.md'
	- '**.rst'
	- '**.txt'

	jobs:

	build:
	name: CI on unsupported Linux

	runs-on: ubuntu-latest

	steps:
	- name: Check out repository
	uses: actions/checkout@v2
	with:
	submodules: true

	- name: Install FSF toolchain
	uses: alire-project/alr-install@v1
	with:
	crates: gnat_native gprbuild

	- name: Install Python 3.x (required for the testsuite)
	uses: actions/setup-python@v2
	with:
	python-version: '3.x'

	- name: Run test script
	run: scripts/ci-github.sh
	shell: bash
	env:
	BRANCH: ${{ github.base_ref }}
	ALIRE_DISABLE_DISTRO: true

	- name: Upload logs (if failed)
	if: failure()
	uses: actions/upload-artifact@master
	with:
	name: e3-log-unsupported.zip
	path: testsuite/out

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