anchor.diff:  { lib, stdenv
   , gettext
   , fetchurl
  +, fetchpatch
   , wrapGAppsHook
   , gnome-video-effects
   , libcanberra-gtk3
  
positive.code:     url = "mirror://gnome/sources/cheese/${lib.versions.majorMinor version}/${pname}-${version}.tar.xz";
      sha256 = "0vyim2avlgq3a48rgdfz5g21kqk11mfb53b2l883340v88mp7ll8";
    };
  
    postPatch = ''
      chmod +x meson_post_install.py
  
negative.code:     python3
      vala
      wrapGAppsHook
    ];
  
    buildInputs = [
  