19 May
2007
19 May
'07
2:30 p.m.
On 19/05/07, Hans van Thiel
causes no problems in Hugs (-98 flag) but compiling with GHC produces:
There's the solution to your problem: type synonym instances aren't Haskell98, so you have to pass the -98 flag ('turn on extensions') to Hugs in order for it to work. The corresponding GHC flag is -fglasgow-exts. Try that. -- -David House, dmhouse@gmail.com