@ceyt IDE1 уже обосрался
> prog.hs:12:18:
Could not find module `Data.Vector.Fixed'
Use -v to see a list of the files searched for.
>
> prog.hs:13:8:
Could not find module `Data.Vector.Fixed.Boxed'
Use -v to see a list of the files searched for.
>
> prog.hs:14:8:
Could not find module `Data.Vector.Fixed.Cont'
Use -v to see a list of the files searched for.
>
> prog.hs:15:8:
Could not find module `System.Console.ANSI'
Use -v to see a list of the files searched for.
Проверяем веб-компиляторы Haskell при помощи Muesli.hs [из песочницы]