bug#64309: Python dlopen()s musl libc

[Athena Martin]

I've had experiences now with multiple Guix packages, including gajim
(bug 60235) and now python-neovim-remote, which have an issue where
Python tries to dlopen() libc, but finds the system libc instead of
Guix's, resulting on Alpine Linux hosts in a crash with this message:

ImportError: libc.musl-x86_64.so.1: cannot open shared object file: No such 
file or directory

There are a variety of tracebacks that lead up to this, depending on
the package in question.

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