I noticed that archlinux has an identical coveragerc and wondered why.
Then noticed that our tox.ini (which we bundle into the pypi package)
needs .coveragerc, but we did not bundle it until now.
(cherry picked from commit c79156caf5)
update build process to use newer Cython/setuptools APIs
Cython.Distutils.build_ext has been deprecated, and the recommended replacement
is Cython.Build.cythonize.
setuptools.Extension will convert the file extension .pyx -> .c so there's no
need to duplicate the functionality. This allows the removal of the special
Sdist logic when cython is available.
cythonize will compile .pyx -> .c, but the resulting Extension's files won't be
included in sdist unless the Extension is in ext_modules. We don't want the
platform extensions in ext_modules though because that will break compilation,
so the platform .c files were added to the manifest.
- removed some unnecessary distutils imports and moved some imports for better
visibility
- stop cythonize from running in some common use cases like 'clean'
1.1.2 was released with a sdist that included quite some files that
did not belong into the package (I tried nuitka at some time).
This was because the old MANIFEST.in / setup.py included all the stuff
in the package dir.
Now, setuptools_scm is to automatically deal with the INCLUDES and
MANIFEST.in only handles the EXCLUDES, so only committed files get
into the sdist (minus some we do not want).
Also, no .c .h .pyx files will be installed - they are not needed as
they have been compiled into binary files.
