I should have written libre not free. That has a clear meaning (and it's what I use in the followup comment). Do you have a better suggestion than "open" for "no restrictions on use"?
> Personally, if I'm writing a hobby project then I want it to be copyleft.
Totally up to you! In the context of Haskell projects though, I really, really want to see Haskell businesses succeed as well as the open Haskell ecosystem.