I would love to see cocotb included in Guix. Your patch does not build
for me though, because find-libpython is missing. I took the liberty to
add it. After replacing `python-find_libpython' by
`python-find-libpython' and including my patch, your patch does
successfully build for me.

That being said, it seems cocotb actually has a very extensive set of
tests. If possible, it would be nice if these can be included as well.

Best wishes,

Troy