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/development/python-modules/klaus/default.nix

@@ -0,0 +1,40 @@
+{ lib, buildPythonPackage, fetchFromGitHub, isPy3k, six, flask, pygments, dulwich, httpauth, humanize, pytest, requests, python-ctags3, mock }:
+
+buildPythonPackage rec {
+  pname = "klaus";
+  version = "1.5.2";
+
+  src = fetchFromGitHub {
+    owner = "jonashaag";
+    repo = pname;
+    rev = version;
+    sha256 = "12b96jgiv9y7zmkqqj3dh0fbbm3ps8gbqk925qrhh56zqjl66kx2";
+  };
+
+  prePatch = ''
+    substituteInPlace runtests.sh \
+      --replace "mkdir -p \$builddir" "mkdir -p \$builddir && pwd"
+  '';
+
+  propagatedBuildInputs = [
+    six flask pygments dulwich httpauth humanize
+  ];
+
+  checkInputs = [
+    pytest requests python-ctags3
+  ] ++ lib.optional (!isPy3k) mock;
+
+  checkPhase = ''
+    ./runtests.sh
+  '';
+
+  # Needs to set up some git repos
+  doCheck = false;
+
+  meta = with lib; {
+    description = "The first Git web viewer that Just Works";
+    homepage    = "https://github.com/jonashaag/klaus";
+    license     = licenses.isc;
+    maintainers = with maintainers; [ pSub ];
+  };
+}