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/reikna/default.nix

@@ -0,0 +1,44 @@
+{ lib
+, fetchPypi
+, buildPythonPackage
+, sphinx
+, pytest-cov
+, pytest
+, Mako
+, numpy
+, funcsigs
+, withCuda ? false, pycuda
+, withOpenCL ? true, pyopencl
+}:
+
+buildPythonPackage rec {
+  pname = "reikna";
+  version = "0.7.6";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "722fefbd253d0bbcbf5250b7b9c4aca5722cde4ca38bfbf863a551a5fc26edfa";
+  };
+
+  checkInputs = [ sphinx pytest-cov pytest ];
+
+  propagatedBuildInputs = [ Mako numpy funcsigs ]
+    ++ lib.optional withCuda pycuda
+    ++ lib.optional withOpenCL pyopencl;
+
+  checkPhase = ''
+    py.test
+  '';
+
+  # Requires device
+  doCheck = false;
+
+  meta = with lib; {
+    description = "GPGPU algorithms for PyCUDA and PyOpenCL";
+    homepage = "https://github.com/fjarri/reikna";
+    license = licenses.mit;
+    maintainers = [ maintainers.fridh ];
+
+  };
+
+}