anchor.diff:  
   stdenv.mkDerivation rec {
     pname = "argyllcms";
  -  version = "2.2.0";
  +  version = "2.2.1";
   
     src = fetchzip {
       # Kind of flacky URL, it was reaturning 406 and inconsistent binaries for a
       # while on me. It might be good to find a mirror
       url = "https://www.argyllcms.com/Argyll_V${version}_src.zip";
  -    sha256 = "sha256-EcVwYJfJbWWXl58O3ulsrWgUYTgR4uWdMgb0Z140Pu4=";
  +    sha256 = "sha256-umY3wQfG26Okqnw+MCUnlwWTAyJ6MR/FHe5oe61KBh0=";
     };
  -
  -  patches = [ ./gcc5.patch ];
   
     # The contents of this file comes from the Jamtop file from the
     # root of the ArgyllCMS distribution, rewritten to pick up Nixpkgs
  
positive.code: 
    # Install udev rules, but remove lines that set up the udev-acl
    # stuff, since that is handled by udev's own rules (70-udev-acl.rules)
    #
    # Move ref to a better place (there must be a way to make the install target
    # do that for us)
    postInstall = ''
      rm -v $out/bin/License.txt
      mkdir -p $out/etc/udev/rules.d
      sed -i '/udev-acl/d' usb/55-Argyll.rules
      cp -v usb/55-Argyll.rules $out/etc/udev/rules.d/
      mkdir -p $out/share/
      mv $out/ref $out/share/argyllcms
    '';
  
    meta = with lib; {
  
negative.code:     # enable dummy Demo Instrument (only if code is available)
      USE_DEMOINST = true ;
  
      # enable Video Test Patch Generator and 3DLUT device support
      # (V2.0.0 and above)
      USE_VTPGLUT = false ;
  
      # enable Printer device support
      USE_PRINTER = false ;
  
      # enable CMF Measurement device and accessory support (if present)
      USE_CMFM = false ;
  
      # Use ArgyllCMS version of libusb (deprecated - don't use)
      USE_LIBUSB = false ;
  
      # Compile in graph plotting code (Not fully implemented)
      USE_PLOT = true ;		# [true]
  
      JPEGLIB = ;
      JPEGINC = ;
  