You can see a discussion on hackernews.
There was no dedicated discussion on discourse.
For me, latency is the #1 problem.
As an example, I find the blog post advertising Julia’s CSV.jl is 10-20x faster than alternatives in Python and R to be grating, because I would prefer any of these R or Python alternatives over CSV.jl for performance reasons.
For the sizes of CSVs I work with, the R and Python options are essentially instant, yet in Julia I need to wait 10 seconds each time to compile.
Latency is a problem we should be taking more seriously in the package ecosystem.