anchor.diff:  , glib
   , gtk3
   , libhandy_0
  +, libsass
   , meson
   , ninja
   , pango
   , pkg-config
   , python3
  -, rustc
   , rustPlatform
   , wrapGAppsHook
   }:
   
  -rustPlatform.buildRustPackage rec {
  +stdenv.mkDerivation rec {
     pname = "contrast";
     version = "0.0.3";
   
  
positive.code:     glib
      gtk3
      libhandy_0
      pango
    ];
  
    postPatch = ''
      patchShebangs build-aux/meson_post_install.py
    '';
  
    # Don't use buildRustPackage phases, only use it for rust deps setup
    configurePhase = null;
    buildPhase = null;
    checkPhase = null;
    installPhase = null;
  
    meta = with lib; {
      description = "Checks whether the contrast between two colors meet the WCAG requirements";
  
negative.code:     sha256 = "0kk3mv7a6y258109xvgicmsi0lw0rcs00gfyivl5hdz7qh47iccy";
    };
  
    cargoDeps = rustPlatform.fetchCargoTarball {
      inherit src;
      name = "${pname}-${version}";
      hash = "sha256-ePkPiWGn79PHrMsSEql5OXZW5uRMdTP+w0/DCcm2KG4=";
    };
  
    nativeBuildInputs = [
      desktop-file-utils
  