anchor.diff:      libgphoto2
       avahi
       libarchive
  -    fuse
  +    fuse3
       libcdio
       samba
       libmtp
  
positive.code: , libgphoto2
  , avahi
  , libarchive
  , fuse
  , libcdio
  , libxml2
  , libxslt
  
negative.code:     libcdio-paranoia
      libnfs
      openssh
      gsettings-desktop-schemas
      # TODO: a ligther version of libsoup to have FTP/HTTP support?
    ] ++ stdenv.lib.optionals gnomeSupport [
      gnome3.libsoup
  