Hi,

After pulling guix with the merged core updates (guix at commit
95ffdfe86cb1b8a8e4fff1386a147718400b76e0), I found a few packages
failing to build:

 - fbreader
 - gnubg
 - gnubik
 - postgis
 - python-cheetah
 - python-trezor

I have not yet had the time to try and fix them, so I just list them
here in case someone wants to take a look at them.