jgart via Guix-patches via schreef op za 26-03-2022 om 14:27 [-0400]:
> +      (list #:phases
> +            #~(modify-phases %standard-phases
> +                (add-after 'unpack 'patch
> +                  (lambda _
> +                    (substitute* "setup.py"
> +                      (("'CC', 'cc'")
> +                       "'CC', 'gcc'")))))))

I now this was present in the original code, but this is most likely
completely broken when cross-compiling.  Use cc-for-target instead.
Additionally, you can try removing input labels from 'native-inputs'.

Greetings,
Maxime.