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/libraries/openbabel/default.nix

@@ -0,0 +1,45 @@
+{ stdenv, lib, fetchFromGitHub, cmake, zlib, libxml2, eigen, python, cairo, pcre, pkg-config, swig, rapidjson }:
+
+stdenv.mkDerivation rec {
+  pname = "openbabel";
+  version = "3.1.1";
+
+  src = fetchFromGitHub {
+    owner = "openbabel";
+    repo = "openbabel";
+    rev = "openbabel-${lib.replaceStrings ["."] ["-"] version}";
+    sha256 = "sha256-wQpgdfCyBAoh4pmj9j7wPTlMtraJ62w/EShxi/olVMY=";
+  };
+
+  buildInputs = [ zlib libxml2 eigen python cairo pcre swig rapidjson ];
+
+  nativeBuildInputs = [ cmake pkg-config ];
+
+  pythonMajorMinor = "${python.sourceVersion.major}.${python.sourceVersion.minor}";
+
+  cmakeFlags = [
+    "-DRUN_SWIG=ON"
+    "-DPYTHON_BINDINGS=ON"
+  ];
+
+  postFixup = ''
+    cat <<EOF > $out/lib/python$pythonMajorMinor/site-packages/setup.py
+    from distutils.core import setup
+
+    setup(
+        name = 'pyopenbabel',
+        version = '${version}',
+        packages = ['openbabel'],
+        package_data = {'openbabel' : ['_openbabel.so']}
+    )
+    EOF
+  '';
+
+  meta = with lib; {
+    description = "A toolbox designed to speak the many languages of chemical data";
+    homepage = "http://openbabel.org";
+    platforms = platforms.all;
+    license = licenses.gpl2Plus;
+    maintainers = with maintainers; [ danielbarter ];
+  };
+}