On Wed, 2004-06-23 at 01:13, Duncan Coutts wrote:
ghc makes it's own type checker monad TcM an instance of the Quasi class
(which is rather cunning), however this means that if the user calls the
Monad function 'fail' then the internal TcM fail method gets called.
This monad (IOEnv) was never
ghc makes it's own type checker monad TcM an instance of the Quasi class
(which is rather cunning), however this means that if the user calls the
Monad function 'fail' then the internal TcM fail method gets called.
This monad (IOEnv) was never meant to fail (see
ghc/compiler/utils/IOEnv.hs/) so
