bug#37850: Glib documentation is missing

[Alexandros Theodotou]

I am new to guix so please excuse my ignorance, but is there an issue 
with just adding a "doc" output to the current glib, as mentioned in the 
manual?
http://guix.gnu.org/manual/en/guix.html#Packages-with-Multiple-Outputs
I find this approach nice and clean and I am personally not too fond of 
the idea of having "*-minimal" and "*-with-documentation" packages.