GHC build fails without alex

[Sven Panne]

Peter Simons wrote:
> [...]
>  | typecheck/TcSimplify.lhs:22:
>  |     Failed to load interface for `TcUnify':
>  |         Bad interface file: stage2/typecheck/TcUnify.hi-boot-6
>  |             stage2/typecheck/TcUnify.hi-boot-6:6: parse error on input `.'
>  |
>  | typecheck/TcSimplify.lhs:22:
>  |     Module `TcUnify' (hi-boot interface) does not export `unifyTauTy'
>  | make[1]: *** [stage2/typecheck/TcSimplify.o] Error 1
>  | make[1]: Leaving directory `/usr/local/src/ghc-current/ghc/compiler'
>  | make: *** [stage2] Error 2
> 
> I performed a 'distclean', a 'cvs update', and tried it again -- same
> problem. I'm compiling on Linux/x86 using GHC 5.04.3 and GCC 3.2.3.

Just update again...  :-)

Cheers,
    S.