Just you. Once the editor actually loads (turning the “Haskell source” pane on the left from the page background’s deep violet into a dark gray and displaying a “hello world” program), I can type perfectly fine. And I’m using a browser based on WebKitGTK, which is not exactly known for its stellar compatibility.

Thanks, I have given up waiting it appears to take minutes on a phone.

Hm, works fine here (Firefox on Ubuntu).

But getLine doesn't seem to be implemented, so there is output but not yet input :)

I thought you were talking about typing in Haskell at first lol.

They were! Typing...in Haskell...on a keyboard...on their screen...