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/twtxt/default.nix

@@ -0,0 +1,37 @@
+{ lib, fetchFromGitHub, buildPythonApplication, aiohttp, python-dateutil, humanize, click, pytestCheckHook, tox }:
+
+buildPythonApplication rec {
+  pname = "twtxt";
+  version = "1.2.3";
+
+  src = fetchFromGitHub {
+    owner = "buckket";
+    repo = pname;
+    rev = "v${version}";
+    sha256 = "sha256-AdM95G2Vz3UbVPI7fs8/D78BMxscbTGrCpIyyHzSmho=";
+  };
+
+  # Relax some dependencies
+  postPatch = ''
+    substituteInPlace setup.py \
+      --replace 'aiohttp>=2.2.5,<3' 'aiohttp' \
+      --replace 'click>=6.7,<7' 'click' \
+      --replace 'humanize>=0.5.1,<1' 'humanize'
+  '';
+
+  propagatedBuildInputs = [ aiohttp python-dateutil humanize click ];
+
+  checkInputs = [ pytestCheckHook tox ];
+
+  disabledTests = [
+     # Disable test using relative date and time
+     "test_tweet_relative_datetime"
+  ];
+
+  meta = with lib; {
+    description = "Decentralised, minimalist microblogging service for hackers";
+    homepage = "https://github.com/buckket/twtxt";
+    license = licenses.mit;
+    maintainers = with maintainers; [ siraben ];
+  };
+}