Hello. Currently Guix attempts to ‘merge’ font packages which install themselves into the same file path by generating ‘…-fonts-dir’ directories with symbolic links and combined fonts.dir files.
Needless to say, it is completely broken. The X.org server has not been following symbolic links to font files for some time now for security reasons. This is the kind of hack required currently to make X server fonts work: XFONTDIRS="$(realpath -z ~/.guix-profile/share/fonts/X11/*/!(fonts.dir) | sed 's:[^/]*\x00:\x00:g' | sort -zu | tr '\0' ,)" There appears to be simply no way to fix the current approach. The X server will not follow symbolic links. So there is not point in generating these font directories.