Try adding a simple CI script for GithubActions.

.github/workflows/test.yml

@@ -1,13 +1,16 @@
-name: python-suitesparse-graphblas
+name: Test
 
 on:
   push:
-    branches: [main]
+    branches: [ main ]
   pull_request:
 
 jobs:
   test:
     runs-on: ${{ matrix.os }}
+    defaults:
+      run:
+        shell: bash -l {0}
     strategy:
       fail-fast: false
       matrix:
@@ -21,20 +24,31 @@ jobs:
       with:
         auto-update-conda: true
         python-version: ${{ matrix.python-version }}
+        environment-file: continuous_integration/environment.yml
         channels: conda-forge
+        activate-environment: suitesparse-graphblas
     - name: Build
       run: |
-        conda info
-        conda list
-        conda install -c conda-forge cffi cython numpy graphblas pytest coverage black flake8  # TODO: environment.yml
         python setup.py build_ext --inplace
         python setup.py develop
     - name: Test
       env:
         CYTHON_COVERAGE: true
       run: |
         coverage run --branch -m pytest
+        coverage run -a --branch suitesparse_graphblas/tests/test_initialize.py
     - name: Lint
       run: |
         black *py suitesparse_graphblas --check --diff
         flake8 *py suitesparse_graphblas
+    - name: create_headers.py check
+      if: (! contains(matrix.os, 'windows'))
+      run: |
+        # These shouldn't change, so make copies to compare to
+        cp suitesparse_graphblas/suitesparse_graphblas.h .
+        cp suitesparse_graphblas/suitesparse_graphblas_no_complex.h .
+        cp suitesparse_graphblas/source.c .
+        coverage run -a --branch suitesparse_graphblas/create_headers.py
+        diff suitesparse_graphblas/suitesparse_graphblas.h suitesparse_graphblas.h
+        diff suitesparse_graphblas/suitesparse_graphblas_no_complex.h suitesparse_graphblas_no_complex.h
+        diff suitesparse_graphblas/source.c source.c

README.md

@@ -1,4 +1,10 @@
 # python-suitesparse-graphblas
+
+[![Version](https://img.shields.io/pypi/v/suitesparse-graphblas.svg)](https://pypi.org/project/suitesparse-graphblas/)
+[![License](https://img.shields.io/badge/License-Apache%202.0-blue.svg)](https://github.com/GraphBLAS/python-suitesparse-graphblas/blob/main/LICENSE)
+[![Build Status](https://github.com/GraphBLAS/python-suitesparse-graphblas/workflows/Test/badge.svg)](https://github.com/GraphBLAS/python-suitesparse-graphblas/actions)
+[![Code style](https://img.shields.io/badge/code%20style-black-000000.svg)](https://github.com/psf/black)
+
 Python CFFI Binding around
 [SuiteSparse:GraphBLAS](https://github.com/DrTimothyAldenDavis/GraphBLAS)
 

continuous_integration/environment.yml

@@ -0,0 +1,13 @@
+name: suitesparse-graphblas
+channels:
+  - conda-forge
+  - defaults
+dependencies:
+  - graphblas=4.0.3
+  - cffi
+  - cython
+  - numpy
+  - pytest
+  - coverage
+  - black
+  - flake8

pyproject.toml

@@ -1,5 +1,5 @@
 [build-system]
-requires = ["setuptools", "wheel", "numpy>=1.15"]
+requires = ["setuptools", "wheel", "numpy>=1.15", "cython"]
 
 [tool.black]
 line-length = 100

setup.py

@@ -13,6 +13,7 @@
 import sys
 import versioneer
 
+is_win = sys.platform.startswith("win")
 define_macros = [("NPY_NO_DEPRECATED_API", "NPY_1_7_API_VERSION")]
 
 if use_cython:
@@ -25,6 +26,13 @@
         define_macros.append(("CYTHON_TRACE_NOGIL", "1"))
 else:
     suffix = ".c"
+    # Make sure all required .c files are here
+    pyx_files = glob("suitesparse_graphblas/**.pyx", recursive=True)
+    c_files = glob("suitesparse_graphblas/**.c", recursive=True)
+    missing = {x[:-4] for x in pyx_files} - {x[:-2] for x in c_files}
+    if missing:
+        missing_c = sorted(x + ".c" for x in missing)
+        raise RuntimeError("Cython required when missing C files: " + ", ".join(missing_c))
 
 include_dirs = [np.get_include(), os.path.join(sys.prefix, "include")]
 ext_modules = [
@@ -43,7 +51,7 @@
     long_description = f.read()
 
 package_data = {"suitesparse_graphblas": ["*.pyx", "*.pxd", "*.c", "*.h"]}
-if sys.platform == "win32":
+if is_win:
     package_data["suitesparse_graphblas"].append("*.dll")
 
 setup(

suitesparse_graphblas/build.py

@@ -10,11 +10,18 @@
 with open(os.path.join(thisdir, "source.c")) as f:
     source = f.read()
 
+include_dirs = [os.path.join(sys.prefix, "include")]
+library_dirs = [os.path.join(sys.prefix, "lib")]
+if is_win:
+    include_dirs.append(os.path.join(sys.prefix, "Library", "include"))
+    library_dirs.append(os.path.join(sys.prefix, "Library", "lib"))
+
 ffibuilder.set_source(
     "suitesparse_graphblas._graphblas",
     source,
     libraries=["graphblas"],
-    include_dirs=[os.path.join(sys.prefix, "include")],
+    include_dirs=include_dirs,
+    library_dirs=library_dirs,
 )
 
 header = "suitesparse_graphblas.h"

suitesparse_graphblas/create_headers.py

@@ -32,7 +32,7 @@
 
 
 def sort_key(string):
-    """ e.g., sort 'INT8' before 'INT16'"""
+    """e.g., sort 'INT8' before 'INT16'"""
     return string.replace("8", "08")
 
 

suitesparse_graphblas/tests/test_initialize.py

@@ -0,0 +1,9 @@
+if __name__ == "__main__":
+    import suitesparse_graphblas as ssgb
+    import pytest
+
+    assert ssgb.is_initialized() is False
+    ssgb.initialize()
+    assert ssgb.is_initialized() is True
+    with pytest.raises(RuntimeError, match="GraphBLAS is already initialized"):
+        ssgb.initialize()

suitesparse_graphblas/tests/test_package.py

@@ -1,4 +1,4 @@
-from suitesparse_graphblas import lib, ffi
+from suitesparse_graphblas import lib, ffi  # noqa
 
 
 def test_matrix_existence():