anchor.diff:             stdenv.mkDerivation (rec {
   
       name = "uboot-${defconfig}-${version}";
  -    version = "2017.11";
  +    version = "2018.03";
   
       src = fetchurl {
         url = "ftp://ftp.denx.de/pub/u-boot/u-boot-${version}.tar.bz2";
  -      sha256 = "01bcsah5imy6m3fbjwhqywxg0pfk5fl8ks9ylb7kv3zmrb9qy0ba";
  +      sha256 = "1z9x635l5164c5hnf7qs19w7j3qghbkgs7rpn673dm898i9pfx3y";
       };
   
       patches = [
  -      (fetchpatch {
  -        url = https://github.com/dezgeg/u-boot/commit/cbsize-2017-11.patch;
  -        sha256 = "08rqsrj78aif8vaxlpwiwwv1jwf0diihbj0h88hc0mlp0kmyqxwm";
  -      })
         (fetchpatch {
           url = https://github.com/dezgeg/u-boot/commit/rpi-2017-11-patch1.patch;
           sha256 = "067yq55vv1slv4xy346px7h329pi14abdn04chg6s1s6hmf6c1x9";
  
positive.code: 
    ubootWandboard = buildUBoot rec {
      defconfig = "wandboard_defconfig";
      targetPlatforms = ["armv7l-linux"];
      filesToInstall = ["u-boot.img" "SPL"];
    };
  }
  
negative.code:         sha256 = "0bbw0q027xvzvdxxvpzjajg4rm30a8mb7z74b6ma9q0l7y7bi0c4";
        })
        (fetchpatch {
          url = https://github.com/dezgeg/u-boot/commit/pythonpath-2018-03.patch;
          sha256 = "1rhhlhrwhv7ic1n5i720jfh2cxwrkssrkvinllyjy3j9k9bpzcqd";
        })
      ];
  
  