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/dask-gateway-server/default.nix

@@ -0,0 +1,50 @@
+{ lib
+, buildPythonPackage
+, fetchPypi
+, aiohttp
+, colorlog
+, cryptography
+, traitlets
+, go
+, isPy27
+}:
+
+buildPythonPackage rec {
+  pname = "dask-gateway-server";
+  # update dask-gateway-server lock step with dask-gateway
+  version = "0.9.0";
+  disabled = isPy27;
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "82bca8a98fc1dbda9f67c8eceac59cb92abe07db6227c120a1eb1d040ea40fda";
+  };
+
+  nativeBuildInputs = [
+    go
+  ];
+
+  propagatedBuildInputs = [
+    aiohttp
+    colorlog
+    cryptography
+    traitlets
+  ];
+
+  preBuild = ''
+    export HOME=$(mktemp -d)
+    export GO111MODULE=off
+  '';
+
+  # tests requires cluster for testing
+  doCheck = false;
+
+  pythonImportsCheck = [ "dask_gateway_server" ];
+
+  meta = with lib; {
+    description = "A multi-tenant server for securely deploying and managing multiple Dask clusters";
+    homepage = "https://gateway.dask.org/";
+    license = licenses.bsd3;
+    maintainers = [ maintainers.costrouc ];
+  };
+}