I did not claim that Haskell is not practical. I said it is not _very_ practical.
Yi is nice. There is also Leksah which looks even more appealing.
http://leksah.org/images/Bildschirmfoto-leksah-13-linux.png
I just wonder why are there are so few practical applications if Haskell is so practical and "simple".
0: https://github.com/yi-editor/yi