This package doesn't build

https://gitlab.com/humanitiesNerd/guix-hacks/blob/polari/gnu/packages/gnome.scm#L622

This is an excerpt of the build log

starting phase `pre-check'
phase `pre-check' succeeded after 0.0 seconds
starting phase `check'
_XSERVTransmkdir: ERROR: euid != 0,directory /tmp/.X11-unix will not be
created.

This is what I was suggested on the gspell mailing list ( I already
attempted that suggestion, with no result)

https://mail.gnome.org/archives/gspell-list/2017-February/msg00001.html

Any help appreciated
Thanks in advance