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/whichcraft/default.nix

@@ -0,0 +1,26 @@
+{ lib, buildPythonPackage, fetchPypi, pytest, glibcLocales }:
+
+buildPythonPackage rec {
+  pname = "whichcraft";
+  version = "0.6.1";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "11yfkzyplizdgndy34vyd5qlmr1n5mxis3a3svxmx8fnccdvknxc";
+  };
+
+  LC_ALL="en_US.utf-8";
+  buildInputs = [ glibcLocales ];
+
+  checkInputs = [ pytest ];
+
+  checkPhase = ''
+    py.test
+  '';
+
+  meta = with lib; {
+    homepage = "https://github.com/pydanny/whichcraft";
+    description = "Cross-platform cross-python shutil.which functionality";
+    license = licenses.bsd3;
+  };
+}