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/slugid/default.nix

@@ -0,0 +1,29 @@
+{ buildPythonPackage
+, lib
+, fetchFromGitHub
+}:
+
+buildPythonPackage rec {
+  pname = "slugid";
+  version = "2.0.0";
+
+  src = fetchFromGitHub {
+    owner = "taskcluster";
+    repo = "slugid.py";
+    rev = "v${version}";
+    sha256 = "McBxGRi8KqVhe2Xez5k4G67R5wBCCoh41dRsTKW4xMA=";
+  };
+
+  doCheck = false; # has no tests
+
+  pythonImportsCheck = [
+    "slugid"
+  ];
+
+  meta = with lib; {
+    description = "URL-safe base64 UUID encoder for generating 22 character slugs";
+    homepage = "https://github.com/taskcluster/slugid.py";
+    license = licenses.mpl20;
+    maintainers = with maintainers; [ milahu ];
+  };
+}