Re: Missing fonts issue with GNU Icecat

[Daniel Gerber <dg@atufi.org>]

Resolved by applying this advice (which is output when running 
`guix package -i pango` explicitly, but not when pango is 
installed as a dependency -- or I missed it):

```
The following environment variable definitions may be needed:
   export 
   XDG_DATA_DIRS="$HOME/.guix-profile/share${XDG_DATA_DIRS:+:}$XDG_DATA_DIRS"
   export 
   GIO_EXTRA_MODULES="$HOME/.guix-profile/lib/gio/modules${GIO_EXTRA_MODULES:+:}$GIO_EXTRA_MODULES"
```

(Besides, the web site gives other mailing lists (not in the info 
manual)... maybe help-guix is better suited for this kind of 
issues.)