A couple of times, I've had strnage looking messages of the following
sort...
swift.ucc.ie:~/filter: make
ghc-2.09 -c Struct.hs -H30m -K2M -recomp -fglasgow-exts -cpp -syslib
ghc -syslib hbc -Rgc-stats -dshow-passes -fmax-simplifier-iterations4
-funfolding-use-threshold-0 -fshow-simplifier-progress
*** Reader:
*** Renamer:
Out of date: TypeDefs.$d10{-rja,p-}
Compilation IS required
Struct.hs:1: Failed to find interface decl for `Maybe'
Compilation had errors
make: *** [Struct.o] Error 1
I'm guessing it has to do with out of date interface files (from ghc-2.07,
to be exact), but it's not the most helpful way of finding out about this.
Cheers,
Alex.
