anchor.diff:  { lib, stdenv
   , fetchurl
  +, fetchpatch
   , meson
   , ninja
   , pkg-config
  
positive.code:       src = ./fix-paths.patch;
        inherit tracker;
      })
    ];
  
    nativeBuildInputs = [
  
negative.code:     gst_all_1.gst-plugins-base
      gtk3
      libhandy
      libportal-gtk3
      libexif
      libnotify
      libseccomp
  