Use poetry for cross compilation of wheel package

[mglettig]

I try to create a wheel package using poetry build for my target architecture (ARM) on a X86 host (linux) as my application should be running on an embedded device. There is a platform dependent component (C++ library) in my project. I already managed that poetry triggers the CMake build by defining a build.py script and calling setup_cpp from there. The CMake built was successful using a cross-compiler. However after the successful CMake build setuptools wants to copy the wrong share library (x86 version instead of ARM version).

I guess I would need to use something like crossenv to overcome that problem that the architectures get mixed up. This leads me to my question: How can I use poetry together with crossenv? Or how could I tell poetry to create a crossenv instead of a venv?