Your bug report

#75620: [PATCH core-packages-team] gnu: gcc-6: Use libstdc++ headers appropriate for each GCC.

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

The explanation is attached below, along with your original report.
If you require more details, please reply to 75620@debbugs.gnu.org.

-- 
75620: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=75620
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