What's stopping Nim from going mainstream? (And how to fix it?)

[jrfondren]

In nimble, nimcr fixes the second problem, and nimrun promises to fix both but 
I never minded .nim extensions. I've used Nim for some internal websites, with 
compile-time templating and a single line of flags for nimcr to build and link 
in a static sqlite3 for a significant speed boost vs. the prehistoric system 
library.