unix package

[Isaac Dupree]

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Bulat Ziganshin wrote:
> anyway file operations best should be split away from base. the
> only problem is that Handle type used in definition of Exception which
> is used in definition of IO monad which is used in Prelude (and some
> Prelude functions need file i/o by itself)

Maybe we will end up having to move Prelude out of base (and all base
modules import explicitly what they want; we could have a small prelude
for them if there are some things that can only be gotten from the
Prelude ( (.), ($), seq... ?), or make real modules that export those.)

And there is a long-term plan for fixing Exception to be an extensible
single-inheritance hierarchy ... maybe ghc 6.10 ... at which point
low-level refactorings will be MUCH more possible (I tried once...
Exception was one problem, avoiding orphan instances, another...)

Isaac
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