Your bug report

#37946: pingus build fails: ‘function’ in namespace ‘std’ does not name a template type

which was filed against the guix package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to 37946@debbugs.gnu.org.

-- 
37946: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=37946
GNU Bug Tracking System
Contact help-debbugs@gnu.org with problems