Hi,

here are 5 patches.

1 + 2: in retrospective and experience this makes sense.
3: libextractor
4: gnurl
5: gnunet + gnunet-gtk

Caveat at 5: This is the absolute base of an update.
             I can't invest more time for Guix at the
             the moment but I can help with answering
             questions of the person who'll finish this
             patch:
             gnunet-gtk doesn't find gnunet, can't link
             against it.
             gnunet does not pick up on the @PYTHON@
             for python3.7 which should be replaced
             at build time, which happens in every
             other system I tested.
             gnunet doesn't run its tests but they
             should work now. Note that if tests
             fail on guix or guixsd, you should report
             them to us, we've started to fix what we
             can fix for certain systems.

Cheers!
ng0