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/memory-allocator/default.nix

@@ -0,0 +1,27 @@
+{ lib
+, fetchPypi
+, buildPythonPackage
+, cython
+}:
+
+buildPythonPackage rec {
+  pname = "memory-allocator";
+  version = "0.1.2";
+
+  src = fetchPypi {
+    inherit version;
+    pname = "memory_allocator";
+    sha256 = "ddf42a2dcc678062f30c63c868335204d46a4ecdf4db0dc43ed4529f1d0ffab9";
+  };
+
+  propagatedBuildInputs = [ cython ];
+
+  pythonImportsCheck = [ "memory_allocator" ];
+
+  meta = with lib; {
+    description = "An extension class to allocate memory easily with cython";
+    homepage = "https://github.com/sagemath/memory_allocator/";
+    maintainers = teams.sage.members;
+    license = licenses.lgpl3Plus;
+  };
+}