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/tools/misc/pdd/default.nix

@@ -0,0 +1,34 @@
+{ lib, fetchFromGitHub, buildPythonApplication, python-dateutil }:
+
+buildPythonApplication rec {
+  pname = "pdd";
+  version = "1.5";
+
+  src = fetchFromGitHub {
+    owner = "jarun";
+    repo = "pdd";
+    rev = "v${version}";
+    sha256 = "1ivzcbm888aibiihw03idp38qbl8mywj1lc1x0q787v0pzqfb4ss";
+  };
+
+  format = "other";
+
+  propagatedBuildInputs = [ python-dateutil ];
+
+  installFlags = [ "PREFIX=$(out)" ];
+
+  meta = with lib; {
+    homepage = "https://github.com/jarun/pdd";
+    description = "Tiny date, time diff calculator";
+    longDescription = ''
+      There are times you want to check how old you are (in years, months, days)
+      or how long you need to wait for the next flash sale or the number of days
+      left of your notice period in your current job. pdd (Python3 Date Diff) is
+      a small cmdline utility to calculate date and time difference. If no
+      program arguments are specified it shows the current date, time and
+      timezone.
+    '';
+    maintainers = [ maintainers.infinisil ];
+    license = licenses.gpl3;
+  };
+}