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/applications/networking/protocol/default.nix

@@ -0,0 +1,29 @@
+{ lib
+, python3
+, fetchFromGitHub
+}:
+
+python3.pkgs.buildPythonApplication rec {
+  pname = "protocol";
+  version = "unstable-2019-03-28";
+  format = "setuptools";
+
+  src = fetchFromGitHub {
+    owner = "luismartingarcia";
+    repo = "protocol";
+    rev = "4e8326ea6c2d288be5464c3a7d9398df468c0ada";
+    sha256 = "13l10jhf4vghanmhh3pn91b2jdciispxy0qadz4n08blp85qn9cm";
+  };
+
+  postPatch = ''
+    substituteInPlace setup.py \
+      --replace "scripts=['protocol', 'constants.py', 'specs.py']" "scripts=['protocol'], py_modules=['constants', 'specs']"
+  '';
+
+  meta = with lib; {
+    description = "ASCII Header Generator for Network Protocols";
+    homepage = "https://github.com/luismartingarcia/protocol";
+    license = licenses.gpl3Plus;
+    maintainers = with maintainers; [ teto ];
+  };
+}