Hi,
Just curious, what external modules does the Prelude depend on?
The only unusual feature that I can think of in the GHC Prelude is the
fact that the partial functions throw exceptions, and so perhaps the
Prelude implementation uses some extra modules for that?
-Iavor
On 6/6/07, Simon Marlow
Isaac Dupree wrote:
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Stefan O'Rear wrote:
Right, the problem is that if Prelude was in haskell98 then it wouldn't be possible to have a program that /didn't/ depend on haskell98 (short of -fno-implicit-prelude extensions, or having a Prelude in both (which would mean you couldn't depend on both base and haskell98)). There's also a pragmatic reason. Currently it is impossible to have a cycle of module imports cross package boundaries; so if the Prelude was in haskell98, then (since the Prelude depends on non-haskell98 base modules for its implementation) *Nothing* in base could use the prelude.
(Assuming haskell98 depends on base currently) It seems we would want haskell98 to re-export base's Prelude. It's just that that's not implemented in released-ghc package management code.
Yes, packages that re-export modules would be a useful feature. Then we could have a version of the base package that only exported the compiler-independent modules, for example.
Cheers, Simon _______________________________________________ Glasgow-haskell-users mailing list Glasgow-haskell-users@haskell.org http://www.haskell.org/mailman/listinfo/glasgow-haskell-users