[bug#47181] Packaging python-soundfile for use in MediaGoblin

[Ben Sturmfels via Guix-patches via <guix-patches@gnu.org>]

Thanks Nicolò,

On Tue, 16 Mar 2021, Nicolò Balzarotti wrote:

>>   OSError: cannot load library 'libsndfile.so.1': libsndfile.so.1:
>>   cannot open shared object file: No such file or directory
>>
> You can patch the sounfile.py file, setting the correct library path.
>
> Many other python packages do this, like python-file, python-libarchive-c, python-pyzbar
>
> It should look something like (untested):
>
> #+begin_src scheme
> (arguments
>      `(#:phases
>        (modify-phases %standard-phases
>          (add-before 'build 'set-library-file-name
>            (lambda* (#:key inputs #:allow-other-keys)
>              (let ((libsndfile (assoc-ref inputs "libsndfile")))
>                (substitute* "soundfile.py"
>                  (("find_library\\('sndfile'\\)")
>                   (string-append "'" libsndfile "/lib/libsndfile.so.0'")))
>                #t))))))
> #+end_src

Thanks, that solves my problem. One follow-up question - is it better to
use the ".so" link or the specific "so.0"?

I've now discovered a subsequent issue with libsndfile that I'll need to
put a patch in for first though. Progress!

Regards,
Ben