MAINT: Require VTK 9+ #313

	name: Headless tests
	concurrency:
	group: ${{ github.workflow }}-${{ github.event.number }}-${{ github.event.ref }}
	cancel-in-progress: true

	on:
	pull_request:
	schedule:
	# Run test at 0400 UTC on Saturday.
	- cron: '0 4 * * 6'

	jobs:
	tests:
	strategy:
	matrix:
	os: [ubuntu-latest]
	python-version: ['3.11']
	fail-fast: false

	runs-on: ${{ matrix.os }}
	env:
	VTK_PARSER_VERBOSE: 'true'
	ETS_TOOLKIT: 'null'

	steps:
	- uses: actions/checkout@v4
	- name: Set up Python ${{ matrix.python-version }}
	uses: actions/setup-python@v5
	with:
	python-version: ${{ matrix.python-version }}
	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip setuptools wheel
	python -m pip install numpy "vtk<9.3" pillow pytest pytest-timeout traitsui
	- name: Install mayavi and tvtk
	run: python -m pip install --no-build-isolation -v .
	- name: Test Mayavi package
	run: pytest -v --timeout=10 --pyargs mayavi
	- name: Test tvtk package
	run: pytest -v --timeout=60 --pyargs tvtk

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