gnome.nautilus: Support thumbnailing WebP files

Note that no other GNOME apps currently support WebP on NixOS
because we lack a usable composition method for gdk-pixbuf caches.

+2
+2
pkgs/desktops/gnome/core/nautilus/default.nix
··· 21 , libexif 22 , libseccomp 23 , librsvg 24 , tracker 25 , tracker-miners 26 , gexiv2 ··· 106 # Thumbnailers 107 --prefix XDG_DATA_DIRS : "${gdk-pixbuf}/share" 108 --prefix XDG_DATA_DIRS : "${librsvg}/share" 109 --prefix XDG_DATA_DIRS : "${shared-mime-info}/share" 110 ) 111 '';
··· 21 , libexif 22 , libseccomp 23 , librsvg 24 + , webp-pixbuf-loader 25 , tracker 26 , tracker-miners 27 , gexiv2 ··· 107 # Thumbnailers 108 --prefix XDG_DATA_DIRS : "${gdk-pixbuf}/share" 109 --prefix XDG_DATA_DIRS : "${librsvg}/share" 110 + --prefix XDG_DATA_DIRS : "${webp-pixbuf-loader}/share" 111 --prefix XDG_DATA_DIRS : "${shared-mime-info}/share" 112 ) 113 '';