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/telethon/default.nix

@@ -0,0 +1,34 @@
+{ lib, buildPythonPackage, fetchPypi, openssl, rsa, pyaes, pythonOlder }:
+
+buildPythonPackage rec {
+  pname = "telethon";
+  version = "1.24.0";
+
+  src = fetchPypi {
+    inherit version;
+    pname = "Telethon";
+    sha256 = "818cb61281ed3f75ba4da9b68cb69486bed9474d2db4e0aa16e482053117452c";
+  };
+
+  patchPhase = ''
+    substituteInPlace telethon/crypto/libssl.py --replace \
+      "ctypes.util.find_library('ssl')" "'${lib.getLib openssl}/lib/libssl.so'"
+  '';
+
+  propagatedBuildInputs = [
+    rsa
+    pyaes
+  ];
+
+  # No tests available
+  doCheck = false;
+
+  disabled = pythonOlder "3.5";
+
+  meta = with lib; {
+    homepage = "https://github.com/LonamiWebs/Telethon";
+    description = "Full-featured Telegram client library for Python 3";
+    license = licenses.mit;
+    maintainers = with maintainers; [ nyanloutre ];
+  };
+}