Ahoy Guix! "xdg-mime query filetype a-book.epub" or "whatever.pdf" returns nothing, which is both puzzling and limiting as it blocks "xdg-open" to work for many files.
My case was opening pdf or epub files from Emacs, which "xdg-open" always sends to the browser, whatever my config (instead of e.g. evince or Foliate). So debugging shows that: in ".xdg-mime-real", (/gnu/store/06ll0ydqsf4bjxwpwsi68dmn2cg0biy6-xdg-utils-1.1.3/bin/xdg-mime points there), l.673-684 in "info_gnome()", even if the "if ... elif ... elif ... fi" fails (i.e. none of "gio", "gvfs-info", or "gnomevfs-info" are available), then l.696 "if [ $? -eq 0 ]" gives always true. Why? I don't know. I guess having a "case ..." instead of "if ... fi" would solve this. But the result is "exit_success" gets called whatever the situation, and xdg-mime often gives no output, which then bugs "xdg-open". Running this in "guix shell gnome-vfs" solves it, but what should be done to fix? And how did this not appear earlier? (is xdg* new?) The options I see are adding the "gnome-vfs" dependency ("gvfs" doesn't provide "gvfs-info", and "gio" is not a package), or proposing "case" instead of "if" upstream. -- Sébastien Lerique https://slvh.fr/