Your bug report

#47889: [installer image] grub-install efi fails getting canonical path to /boot/efi on dos-formatted disk

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 47889@debbugs.gnu.org.

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47889: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=47889
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