uboot: (firmwareOdroidC2/C4) don't invoke patch tool, use patches = [] instead

https://github.com/NixOS/nixpkgs/blob/master/pkgs/stdenv/generic/setup.sh#L948
this can do it nicely.

Signed-off-by: Anton Arapov <anton@deadbeef.mx>

pkgs/applications/science/math/weka/default.nix

@@ -0,0 +1,31 @@
+{ lib, stdenv, fetchurl, jre, unzip, makeWrapper }:
+
+stdenv.mkDerivation rec {
+  pname = "weka";
+  version = "3.9.2";
+
+  src = fetchurl {
+    url = "mirror://sourceforge/weka/${lib.replaceChars ["."]["-"] "${pname}-${version}"}.zip";
+    sha256 = "0zwmhspmqb0a7cm6k6i0s6q3w19ws1g9dx3cp2v3g3vsif6cdh31";
+  };
+
+  nativeBuildInputs = [ makeWrapper unzip ];
+
+  # The -Xmx1000M comes suggested from their download page:
+  # http://www.cs.waikato.ac.nz/ml/weka/downloading.html
+  installPhase = ''
+    mkdir -pv $out/share/weka
+    cp -Rv * $out/share/weka
+
+    makeWrapper ${jre}/bin/java $out/bin/weka \
+      --add-flags "-Xmx1000M -jar $out/share/weka/weka.jar"
+  '';
+
+  meta = {
+    homepage = "http://www.cs.waikato.ac.nz/ml/weka/";
+    description = "Collection of machine learning algorithms for data mining tasks";
+    license = lib.licenses.gpl2Plus;
+    maintainers = [ lib.maintainers.mimame ];
+    platforms = lib.platforms.unix;
+  };
+}