DARTS search space in Ray Tune

Is there any implementation available that integrates the DARTS search space from this paper into Ray Tune? I have a hard time rewriting the search space into the config dictionary format and the only implementation I found on the web seems to be incomplete.

Would be quite interesting to benchmark the search algorithms in Ray Tune with this search space.

Can you say a bit about what is incomplete about the implementation?

My understanding also is that DARTS won’t benefit out of the box from parallelism provided by Ray Tune.