Henning Thielemann wrote: > John Goerzen schrieb: >> So this is annoying (CCing -cafe) >> >> I need NominalDiffTime and UTCTime to have Typeable instances. In >> 6.10.1, they didn't ship with them out of the box, so I added them. >> Apparently, in 6.10.3, they DO ship with those instances out of the box. >> >> Annoyingly, that means that my code breaks on 6.10.3. > > After having conflicting instances several times with some types in the > past, I came to the conclusion that I should never define orphan > instances. Can you restrict your package to 6.10.3 where an "official" > instance is available? > > http://www.haskell.org/haskellwiki/Orphan_instance >
I didn't care about presenting the instance to people using my library, but the instance was necessary within the library itself, and led to the compilation error. -- John _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
