Here is an updated patch for GNU Denemo.

Everything seems fine except for grafting (i.e. disabling grafting
renders the issue invisible). For some reason, "find-files"
does not recognize a file with a Unicode-encoded filename when called
inside "rename-matching-files" from guix/build/graft.scm. When
"find-files" is used on its own, the file is recognized properly.
Is anyone familiar with the grafting code available to help figure out
what is happening to the file name?

Thank you.