You never work with scripting languages? (i.e., why is there no Python, Ruby or Javascript in your lists? or maybe I do'nt know Haxe, does that replace them?)
Most of the stuff I work on is highly concurrent. GILs are the devil. Almost all the joy and ease you from GIL languages is lost as you try to go concurrent and have to use (in python for example) multiprocess and gevent ... then you start getting caught on the rough edges and poor ideas in those tools... and everything falls apart.
I'm not them, but I have no scripting language in my list either. There is simply no need for one. For small sysadmin scripting, sh is nicer than a scripting language. For anything bigger than ~50 lines, I use haskell.
I'm curious as to whether you have shipped or have thought about shipping code in Haskell and why or why not. Rust I'm assuming is too new for that to be an option.
