Build mathlib in github actions

Author: reilleya

.github/workflows/tests.yml

@@ -20,6 +20,9 @@ jobs:
         python -m pip install --upgrade pip
         pip install flake8 pytest
         if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
+    - name: Build mathlib
+      run: |
+        python setup.py build_ext --inplace
     - name: Lint with flake8
       run: |
         # stop the build if there are Python syntax errors or undefined names

setup.py

@@ -1,5 +1,4 @@
 from setuptools import setup, find_packages, Extension
-from uilib.fileIO import appVersionStr
 from Cython.Build import cythonize
 import numpy
 import multiprocessing
@@ -12,6 +11,12 @@
     build_ui = None  # user won't have pyqt_distutils when deploying
     cmdclass = {}
 
+try:
+    from uilib.fileIO import appVersionStr
+except ImportError:
+    print('App version not available, defaulting to 0.0.0')
+    appVersionStr = '0.0.0'
+
 extensions = [
     Extension(
         "mathlib._find_perimeter_cy",  # Full module path