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/fn/default.nix

@@ -0,0 +1,34 @@
+{ lib
+, buildPythonPackage
+, fetchpatch
+, fetchPypi
+}:
+
+buildPythonPackage rec {
+  pname = "fn";
+  version = "0.4.3";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "1nmsjmn8jb4gp22ksx0j0hhdf4y0zm8rjykyy2i6flzimg6q1kgq";
+  };
+
+  patches = [
+    (fetchpatch {
+      url = "https://github.com/kachayev/fn.py/commit/a54fc0bd8aeae277de2db726131d249ce607c0c2.patch";
+      hash = "sha256-I0ZISOgVibsc1k7gwSfeW6qV9PspQqdaHlRLr/IusQ8=";
+      excludes = [
+        "fn/monad.py"
+      ];
+    })
+  ];
+
+  meta = with lib; {
+    description = ''
+      Functional programming in Python: implementation of missing
+      features to enjoy FP
+    '';
+    homepage = "https://github.com/kachayev/fn.py";
+    license = licenses.asl20;
+  };
+}