I'm trying to compile the latest version of GHC from CVS on Linux, but the build reproducibly fails at this point:

main/SysTools.lhs:703: Couldn't match `IO ExitCode' against `t -> t1' Expected type: IO ExitCode Inferred type: t -> t1 Probable cause: `rawSystem' is applied to too many arguments in the call (rawSystem pgm real_args) In a 'do' expression: exit_code <- rawSystem pgm real_args make[2]: *** [stage1/main/SysTools.o] Error 1 make[1]: *** [all] Error 1 make[1]: Leaving directory `/usr/local/src/ghc-current/ghc'

Does anyone have an idea what's going wrong here?

What version of GHC are you compiling with? Cheers, Simon