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-unshare/default.nix

@@ -0,0 +1,27 @@
+{ lib
+, buildPythonPackage
+, fetchFromGitHub
+}:
+
+buildPythonPackage {
+  pname = "python-unshare";
+  # pypi version doesn't support Python 3 and the package didn't update for a long time:
+  # https://github.com/TheTincho/python-unshare/pull/8
+  version = "unstable-2018-05-20";
+
+  src = fetchFromGitHub {
+    owner = "TheTincho";
+    repo = "python-unshare";
+    rev = "4e98c177bdeb24c5dcfcd66c457845a776bbb75c";
+    sha256 = "1h9biinhy5m7r2cj4abhvsg2hb6xjny3n2dxnj1336zpa082ys3h";
+  };
+
+  meta = with lib; {
+    description = "Python bindings for the Linux unshare() syscall";
+    homepage    = "https://github.com/thetincho/python-unshare";
+    license     = licenses.gpl2;
+    platforms   = platforms.linux;
+    maintainers = with maintainers; [ abbradar ];
+  };
+
+}