> You can install 'emacs-guix' and activate 'guix-devel-mode', then
> indentation should work properly.

Ah, I didn't know about `guix-devel-mode'. It helps a lot!

I have send a new patch. Please feel free to let me know if there are
any further changes to be made or if I missed something. I won't be
annoyed or offended. :-)

Cheers!