Earlier quoted context omitted.
The examples mentioned in the other posts confirm my impression that Haskell is a good language for text processing and server applications but a pain for writing rich desktop applications. One of the things I miss in Haskell is a way to compile to C, and a convenient declarative GUI which also compiles to C so that all code can be linked together, and distributed as a single binary. The GUI doesn't need to be native…
I think pretty much any Language is a pain to write GUIs in, a single property dialogue in photoshop is ~6k loc in C++...
Why would some ridiculous plug in API mean that every language is a pain to write GUIs in?