Your bug report

#68478: Guix System: pcaudiolib-1.1 expected string `Derive(['

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 68478@debbugs.gnu.org.

-- 
68478: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=68478
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