looks good!

The ecosystem in Julia is quite strong for MCMC libs because people do not have to lower something to C++ to develop such a library: https://discourse.julialang.org/t/mcmc-landscape/25654/

Of course, for users, they might prefer something like Turing, but I think the Julia tends to blur the differences between user and developer more so than in most other languages (for good or worse) since everything is in one language.