Hugs is now defunct (last release in September 2006, doesn't even support the 2010 language standard), so there is no reason that being GHC-only should be a con

Hugs is now defunct (last release in September 2006, doesn't even support the 2010 language standard), so there is no reason that being GHC-only should be a consideration in selecting a Haskell framework. It's the only real option.