Your bug report

#31757: 'guix system disk-image --format=iso9660' includes more than the OS closure

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 31757@debbugs.gnu.org.

-- 
31757: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=31757
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