[Haskell-cafe] Stupid question #374: why is MaybeT not in the standard library?

[Antoine Latter]

2008/12/22 Luke Palmer <lrpalmer at gmail.com>:
> Yeah, it'd be useful.  Doesn't really matter, though, because it's on
> Hackage (http://hackage.haskell.org), so it's just a cabal install
> MaybeT away.
> Now that cabal and cabal-install are reasonably mature, we really don't have
> to worry about what's blessed as "standard" anymore.  :-)

Although I still had to use my own because I wanted a MonadPlus
instance.  I would offer a patch, but since there's more than one
useful MonadPlus instance for MaybeT it probably still wouldn't be
right for everyone.

-Antoine