[vitd]

This looks really cool! I tried learning Haskell on the Mac a year or two ago. It was painful having to use command-line tools and text editors. I eventually hacked Xcode to do the syntax highlighting and to run the build commands for Haskell. But that breaks every time Xcode updates, etc. This looks like it solves that problem! Can't wait to try it out.

One thing I'd like to see is how well it works for calling into the OS, or at least calling into or being called from C/C++/Objective-C (and eventually Swift).