Where is the D deep learning library?

[Guillaume Piolat via Digitalmars-d]

With the latest popularity of Machine Learning, and all the 
achievement we see, where is the D alternative in this area?

C++'s offering makes lot of use of meta-programming already:
https://www.reddit.com/r/programming/comments/4py875/dlib_190_clean_c11_deep_learning_api/?ref=share&ref_source=link

Surely a touch of DbI and D's meta power could help!