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/pika/default.nix

@@ -0,0 +1,50 @@
+{ lib
+, buildPythonPackage
+, fetchFromGitHub
+, gevent
+, nose
+, mock
+, twisted
+, tornado
+}:
+
+buildPythonPackage rec {
+  pname = "pika";
+  version = "1.2.0";
+
+  src = fetchFromGitHub {
+    owner = "pika";
+    repo = "pika";
+    rev = version;
+    sha256 = "sha256-Wog6Wxa8V/zv/bBrFOigZi6KE5qRf82bf1GK2XwvpDI=";
+  };
+
+  propagatedBuildInputs = [ gevent tornado twisted ];
+
+  checkInputs = [ nose mock ];
+
+  postPatch = ''
+    # don't stop at first test failure
+    # don't run acceptance tests because they access the network
+    # don't report test coverage
+    substituteInPlace setup.cfg \
+      --replace "stop = 1" "stop = 0" \
+      --replace "tests=tests/unit,tests/acceptance" "tests=tests/unit" \
+      --replace "with-coverage = 1" "with-coverage = 0"
+  '';
+
+  checkPhase = ''
+    runHook preCheck
+
+    PIKA_TEST_TLS=true nosetests
+
+    runHook postCheck
+  '';
+
+  meta = with lib; {
+    description = "Pure-Python implementation of the AMQP 0-9-1 protocol";
+    homepage = "https://pika.readthedocs.org";
+    license = licenses.bsd3;
+  };
+
+}