anchor.diff:      "--disable-iso-c"
       "--enable-schemas-compile"
       (enFlag "gudev" (libgudev != null) null)
  +    (enFlag "alsa" (alsa-lib != null) null)
       (enFlag "wayland" (wayland != null) null)
       (enFlag "smartcard-support" (nss != null) null)
       (enFlag "cups" (cups != null) null)
  
positive.code: 
    buildInputs = [
      adwaita-icon-theme
      cairo
      colord
      cups
  
negative.code:       codyopel
      ];
      platforms = with platforms;
        x86_64-linux;
    };
  }
  