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/xnd/default.nix

@@ -0,0 +1,41 @@
+{ lib
+, stdenv
+, buildPythonPackage
+, python
+, ndtypes
+, libndtypes
+, libxnd
+, isPy27
+}:
+
+buildPythonPackage {
+  pname = "xnd";
+  disabled = isPy27;
+  inherit (libxnd) version src meta;
+
+  propagatedBuildInputs = [ ndtypes ];
+
+  postPatch = ''
+    substituteInPlace setup.py \
+      --replace 'include_dirs = ["libxnd", "ndtypes/python/ndtypes"] + INCLUDES' \
+                'include_dirs = ["${libndtypes}/include", "${ndtypes}/include", "${libxnd}/include"]' \
+      --replace 'library_dirs = ["libxnd", "ndtypes/libndtypes"] + LIBS' \
+                'library_dirs = ["${libndtypes}/lib", "${libxnd}/lib"]' \
+      --replace 'runtime_library_dirs = ["$ORIGIN"]' \
+                'runtime_library_dirs = ["${libndtypes}/lib", "${libxnd}/lib"]' \
+  '';
+
+  postInstall = ''
+    mkdir $out/include
+    cp python/xnd/*.h $out/include
+  '' + lib.optionalString stdenv.isDarwin ''
+    install_name_tool -add_rpath ${libxnd}/lib $out/${python.sitePackages}/xnd/_xnd.*.so
+  '';
+
+  checkPhase = ''
+    pushd python
+    mv xnd _xnd
+    python test_xnd.py
+    popd
+  '';
+}