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/dockerspawner/default.nix

@@ -0,0 +1,35 @@
+{ lib
+, buildPythonPackage
+, fetchPypi
+, jupyterhub
+, escapism
+, docker
+}:
+
+buildPythonPackage rec {
+  pname = "dockerspawner";
+  version = "12.1.0";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "3894ed8a9157f8ac8f42e0130f43932490ac5d1e89e6f295b1252f08c00ba36b";
+  };
+
+  propagatedBuildInputs = [
+    jupyterhub
+    escapism
+    docker
+  ];
+
+  # tests require docker
+  doCheck = false;
+
+  pythonImportsCheck = [ "dockerspawner" ];
+
+  meta = with lib; {
+    description = "Dockerspawner: A custom spawner for Jupyterhub";
+    homepage = "https://jupyter.org";
+    license = licenses.bsd3;
+    maintainers = [ maintainers.costrouc ];
+  };
+}