Add cython to setup_requires and pyproject.toml

.appveyor.yml

@@ -46,8 +46,8 @@ environment:
       PYTHON_VERSION: "3.8"
       PYTHON_ARCH: "64"
 
-matrix:
-  fast_finish: true
+# matrix:
+#   fast_finish: true
 
 init:
   - "ECHO %PYTHON% %PYTHON_VERSION% %PYTHON_ARCH%"
@@ -75,17 +75,17 @@ install:
   # Install build and test dependencies
   - "%CMD_IN_ENV% pip install cython setuptools_scm setuptools_scm_git_archive sympy unittest2 pytest"
 
-# We skip the build step as the `built_ext`  command is implicitly called
-# when running `python setup.py test`
-build: off
+build:
+  # create binary packages
+  - "%CMD_IN_ENV% pip wheel -w wheelhouse ."
+  # install wheel so we can test it
+  - pip install --no-index --find-links wheelhouse pyclipper
 
 test_script:
   # Run the project tests
   - "%CMD_IN_ENV% pytest"
 
 after_test:
-  # If tests are successful, create binary packages
-  - "%CMD_IN_ENV% pip wheel -w wheelhouse ."
   - ps: "ls wheelhouse"
 
 artifacts:

pyproject.toml

@@ -3,4 +3,5 @@ requires = [
     "setuptools",
     "wheel",
     "setuptools_scm",
+    "cython",
 ]

setup.py

@@ -91,6 +91,7 @@ def run(self):
     ],
     ext_modules=[ext],
     setup_requires=[
+       'cython>=0.28',
        'setuptools_scm>=1.11.1',
     ] + pytest_runner,
     tests_require=['unittest2', 'pytest'],