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/python-doi/default.nix

@@ -0,0 +1,21 @@
+{ lib, buildPythonPackage, fetchFromGitHub, isPy3k }:
+
+buildPythonPackage rec {
+  pname = "python-doi";
+  version = "0.1.1";
+
+  src = fetchFromGitHub {
+    owner = "papis";
+    repo = "python-doi";
+    rev = "v${version}";
+    sha256 = "1wa5inh2a0drjswrnhjv6m23mvbfdgqj2jb8fya7q0armzp7l6fr";
+  };
+
+  disabled = !isPy3k;
+
+  meta = with lib; {
+    description = "Python library to work with Document Object Identifiers (doi)";
+    homepage = "https://github.com/alejandrogallo/python-doi";
+    maintainers = with maintainers; [ teto ];
+  };
+}