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/kaitaistruct/default.nix

@@ -0,0 +1,48 @@
+{ lib
+, buildPythonPackage
+, fetchPypi
+, fetchFromGitHub
+, lz4
+}:
+
+let
+  kaitai_compress = fetchFromGitHub {
+    owner = "kaitai-io";
+    repo = "kaitai_compress";
+    rev = "434fb42220ff58778bb9fbadb6152cad7e4f5dd0";
+    sha256 = "zVnkVl3amUDOB+pnw5SkMGSrVL/dTQ82E8IWfJvKC4Q=";
+  };
+in
+buildPythonPackage rec {
+  pname = "kaitaistruct";
+  version = "0.9";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "3d5845817ec8a4d5504379cc11bd570b038850ee49c4580bc0998c8fb1d327ad";
+  };
+
+  preBuild = ''
+    ln -s ${kaitai_compress}/python/kaitai kaitai
+    sed '28ipackages = kaitai/compress' -i setup.cfg
+  '';
+
+  propagatedBuildInputs = [
+    lz4
+  ];
+
+  # no tests
+  dontCheck = true;
+
+  pythonImportsCheck = [
+    "kaitaistruct"
+    "kaitai.compress"
+  ];
+
+  meta = with lib; {
+    description = "Kaitai Struct: runtime library for Python";
+    homepage = "https://github.com/kaitai-io/kaitai_struct_python_runtime";
+    license = licenses.mit;
+    maintainers = teams.determinatesystems.members;
+  };
+}