Building on Arrow CUDA

[Paul Taylor]

I'm looking at options to replace the custom Arrow logic in cuDF with 
Arrow library calls. What's the recommended way to declare a dependency 
on pyarrow/arrowcpp with CUDA support?

I see in the docs it says to build from source, but that's only an 
option for an (advanced) end-user. And building/vendoring 
libarrow_cuda.so isn't a great option for a non-Arrow library, because 
someone who does source build Arrow-with-cuda will conflict with the 
version we ship.

Right now we're considering statically linking libarrow_cuda into 
libcudf.so and vendoring Arrow's cuda cython alongside ours, but this 
increases compile times/library size.

Is there a package management solution (like pip/conda install 
pyarrow[cuda]) that I'm missing? If not, should there be?

Best,

Paul