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/pyxattr/default.nix

@@ -0,0 +1,25 @@
+{ lib
+, pkgs
+, fetchPypi
+, buildPythonPackage
+}:
+
+buildPythonPackage rec {
+    pname = "pyxattr";
+    version = "0.7.2";
+
+    src = fetchPypi {
+      inherit pname version;
+      sha256 = "68477027e6d3310669f98aaef15393bfcd9b2823d7a7f00a6f1d91a3c971ae64";
+    };
+
+    # IOError: [Errno 95] Operation not supported (expected)
+    doCheck = false;
+
+    buildInputs = with pkgs; [ attr ];
+
+    meta = with lib; {
+      description = "A Python extension module which gives access to the extended attributes for filesystem objects available in some operating systems";
+      license = licenses.lgpl21Plus;
+    };
+}