unpy is a Cython wrapper for the c_api offered by universal.

On most linux distros with CPython 2.7, 3.4, 3.5, 3.6, or 3.7, unpy should work out of the box:

pip install -i https://testpypi.python.org/pypi unpy

Right now, it has only been shipped to Test PyPI, so availability may be dependent on the last time the Test PyPI repository was wiped, and the package should in general be considered unstable.

Astonishingly, universal has build options which allow its c_api library to work with Cython out of the box. The process has been captured in the provided Makefile.

make lib

will build the universal library, assuming the submodule is checked out and in good shape. It will also move the library and headers into the appropriate locations.

make libtest

will test the library, assuming it is already built.

make cython

will compile the Cython module to C,

make inplace

will build the module in place, and

make wheel

will build a binary wheel distribution in dist/, though this will not be portable beyond the system used to build it.

make sdist

will build a source distribution in dist/, though this WILL NOT WORK unless make lib and make cython have been run.

To build widely compatible manylinux1 wheels, run docker-build-wheels.sh on a suitable image. Such an image must be based manylinux1, but have a local GCC 8.3.0 compiled and available. For some background on obtaining such a thing, see this issue. I am working on publishing suitable docker images.

Some helpful commands:

docker run -u $(id -u) --rm -v `pwd`:/io -ti billzorn/manylinux1-gcc8:1.2 /io/docker-build-wheels.sh manylinux1_x86_64
make sdist
twine upload --repository-url https://test.pypi.org/legacy/ wheelhouse/* dist/*
pip --no-cache-dir install -i https://testpypi.python.org/pypi unpy

Where billzorn/manylinux1-gcc8:1.2 is the local tag of the suitable docker image.