matrix workflow fix mac pdffit2 install (#201) #2

	name: Matrix test

	on:
	push:
	branches:
	- main
	workflow_dispatch:

	defaults:
	run:
	shell: bash -l {0}

	jobs:
	test:
	name: Python ${{ matrix.python-version }}, OS ${{ matrix.os }}
	runs-on: ${{ matrix.os }}
	strategy:
	matrix:
	python-version: ['3.10', '3.11', '3.12']
	os: ["macos-latest", "ubuntu-latest", "windows-latest"]
	steps:
	- name: check out diffpy.pdfgui
	uses: actions/checkout@v4

	- name: Initialize miniconda
	uses: conda-incubator/setup-miniconda@v3
	with:
	activate-environment: test
	auto-update-conda: true
	environment-file: environment.yml
	python-version: ${{ matrix.python-version }}
	auto-activate-base: false

	- name: Conda config
	run: >-
	conda config --set always_yes yes
	--set changeps1 no

	- name: Install diffpy.pdfgui and requirements
	run: \|
	conda install --file requirements/run.txt
	conda install --file requirements/test.txt
	python -m pip install -r requirements/pip.txt
	python -m pip install . --no-deps

	- name: Install latest diffpy.pdffit2 for Mac
	if: runner.os == 'macos-latest'
	run: \|
	conda uninstall diffpy.pdffit2
	brew install gsl
	pip install diffpy.pdffit2==1.4.4rc1

	- name: Install Xvfb
	if: runner.os == 'Linux'
	run: sudo apt-get install -y xvfb

	- name: Start Xvfb
	if: runner.os == 'Linux'
	run: \|
	export DISPLAY=:99
	Xvfb :99 -screen 0 1024x768x16 &

	- name: Validate diffpy.pdfgui
	run: \|
	if [ "$RUNNER_OS" == "Linux" ]; then
	export DISPLAY=:99
	fi
	python -m pytest

	- name: Display Python and Conda info
	run: \|
	python --version
	conda info

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