split by whitespace #6

	name: Build

	on:
	pull_request:
	types: [opened, synchronize]
	push:
	tags:
	- '*'
	branches:
	- master
	workflow_dispatch:
	# Allow to run manually

	concurrency:
	# Cancel previous runs of this workflow for the same branch
	group: ${{ github.workflow }}-${{ github.ref }}
	cancel-in-progress: true

	jobs:
	linux:
	runs-on: ubuntu-latest
	strategy:
	fail-fast: false
	matrix:
	python-version: ['3.9', '3.10', '3.11', '3.12', '3.13-dev']
	polymake-version: ['4.10']
	env:
	POLYMAKE_PREFIX: polymake-${{ matrix.polymake-version }}-linux-x86_64
	steps:
	- name: Set up the repository
	uses: actions/checkout@v4
	- name: Set up Python ${{ matrix.python-version }}
	uses: actions/setup-python@v4
	with:
	python-version: ${{ matrix.python-version }}
	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	python -m pip install build
	curl https://polymake.org/downloads/polymake-${{ matrix.polymake-version }}-linux-x86_64.tar.gz \| tar xzf -
	- name: Build
	run: \|
	export PATH=$(pwd)/$POLYMAKE_PREFIX/bin:$PATH
	export LIBRARY_PATH=$(pwd)/$POLYMAKE_PREFIX/lib:$LIBRARY_PATH
	export CPATH=$(pwd)/$POLYMAKE_PREFIX/include:$CPATH
	python -m build
	- name: Install and test
	run: \|
	python -m pip install dist/*.whl
	python example.py

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