[Haskell-cafe] code-as-config, run-time checks and error locations

[Steffen Schuldenzucker]

This one[1] sounds so awesome! I just read the paper.
In particular I like how one could access the current call stack 
structure live.

However, the most recent changes to the code are from early 2009.
Anyone knows what happened to this?

[1] 
http://hackage.haskell.org/trac/ghc/wiki/ExplicitCallStack/CorePassImplementation