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/opuslib/default.nix

@@ -0,0 +1,39 @@
+{ buildPythonPackage,
+  fetchFromGitHub,
+  isPy27,
+  libopus,
+  nose,
+  lib, stdenv,
+  substituteAll,
+}:
+
+buildPythonPackage rec {
+  pname = "opuslib";
+  version = "3.0.3";
+
+  disabled = isPy27;
+
+  src = fetchFromGitHub {
+    owner = "orion-labs";
+    repo = "opuslib";
+    rev = "92109c528f9f6c550df5e5325ca0fcd4f86b0909";
+    sha256 = "0kd37wimwd1g6c0w5hq2hiiljgbi1zg3rk5prval086khkzq469p";
+  };
+
+  patches = [
+    (substituteAll {
+      src = ./opuslib-paths.patch;
+      opusLibPath = "${libopus}/lib/libopus${stdenv.hostPlatform.extensions.sharedLibrary}";
+    })
+  ];
+
+  checkInputs = [ nose ];
+
+  meta = with lib; {
+    description = "Python bindings to the libopus, IETF low-delay audio codec";
+    homepage = "https://github.com/orion-labs/opuslib";
+    license = licenses.bsd3;
+    platforms = platforms.all;
+    maintainers = with maintainers; [ thelegy ];
+  };
+}

pkgs/development/python-modules/opuslib/opuslib-paths.patch

@@ -0,0 +1,26 @@
+diff --git a/opuslib/api/__init__.py b/opuslib/api/__init__.py
+index 323a2a4..4c8a8fe 100644
+--- a/opuslib/api/__init__.py
++++ b/opuslib/api/__init__.py
+@@ -7,20 +7,12 @@
+
+ import ctypes  # type: ignore
+
+-from ctypes.util import find_library  # type: ignore
+-
+ __author__ = 'Никита Кузнецов <self@svartalf.info>'
+ __copyright__ = 'Copyright (c) 2012, SvartalF'
+ __license__ = 'BSD 3-Clause License'
+
+
+-lib_location = find_library('opus')
+-
+-if lib_location is None:
+-    raise Exception(
+-        'Could not find Opus library. Make sure it is installed.')
+-
+-libopus = ctypes.CDLL(lib_location)
++libopus = ctypes.CDLL('@opusLibPath@')
+
+ c_int_pointer = ctypes.POINTER(ctypes.c_int)
+ c_int16_pointer = ctypes.POINTER(ctypes.c_int16)