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/raven/default.nix

@@ -0,0 +1,28 @@
+{ lib, buildPythonPackage, fetchFromGitHub, isPy3k
+, contextlib2, blinker
+}:
+
+buildPythonPackage rec {
+  pname = "raven";
+  version = "6.10.0";
+
+  src = fetchFromGitHub {
+    owner = "getsentry";
+    repo = "raven-python";
+    rev = version;
+    sha256 = "16x9ldl8cy7flw5kh7qmgbmflqyf210j3q6ac2lw61sgwajsnvw8";
+  };
+
+  # way too many dependencies to run tests
+  # see https://github.com/getsentry/raven-python/blob/master/setup.py
+  doCheck = false;
+
+  propagatedBuildInputs = [ blinker ] ++ lib.optionals (!isPy3k) [ contextlib2 ];
+
+  meta = {
+    description = "A Python client for Sentry (getsentry.com)";
+    homepage = "https://github.com/getsentry/raven-python";
+    license = [ lib.licenses.bsd3 ];
+    maintainers = with lib.maintainers; [ primeos ];
+  };
+}