Your bug report

#28602: Unpack fails with no error message when using a .zip source

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 28602@debbugs.gnu.org.

-- 
28602: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=28602
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