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/wcwidth/default.nix

@@ -0,0 +1,36 @@
+{ lib, fetchPypi, buildPythonPackage, pytestCheckHook
+, isPy3k
+, backports_functools_lru_cache
+, setuptools
+}:
+
+buildPythonPackage rec {
+  pname = "wcwidth";
+  version = "0.2.5";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "c4d647b99872929fdb7bdcaa4fbe7f01413ed3d98077df798530e5b04f116c83";
+  };
+
+  checkInputs = [ pytestCheckHook ];
+
+  propagatedBuildInputs = [ setuptools ] ++ lib.optionals (!isPy3k) [
+    backports_functools_lru_cache
+  ];
+
+  # To prevent infinite recursion with pytest
+  doCheck = false;
+
+  meta = with lib; {
+    description = "Measures number of Terminal column cells of wide-character codes";
+    longDescription = ''
+      This API is mainly for Terminal Emulator implementors -- any Python
+      program that attempts to determine the printable width of a string on
+      a Terminal. It is implemented in python (no C library calls) and has
+      no 3rd-party dependencies.
+    '';
+    homepage = "https://github.com/jquast/wcwidth";
+    license = licenses.mit;
+  };
+}