> I just noted that 5.02.2 is binary incompatible with 5.02.1 which is a
> minor nuisance, since I must then recompile all my .o-files.
> 
> This was not mentioned in the release notes, perhaps it was
> unintentional?

Yes, this is the case for *all* releases of GHC, even minor ones(*).  It would be nice 
to improve this situation, but unfortunately retaining binary compatibility is not 
straightforward due to the high level of coupling between compiled modules - the price 
you pay for aggressive inter-module optimistaion.

Cheers,
        Simon

(*) Actually this may not be strictly true, but binary compatibility would be 
accidental rather than intended.

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