Making GHCi awesomer?

Christopher Allen cma at
Mon Oct 20 18:27:25 UTC 2014

Sorry to bother everybody, but where is this documented? What happens if
incompatible versions pass data between each other?

On Mon, Oct 20, 2014 at 1:22 PM, Edward Z. Yang <ezyang at> wrote:

> Excerpts from Eric Seidel's message of 2014-10-20 09:32:41 -0700:
> > I read recently that Rust has some sort of symbol-mangling in place to
> allow multiple versions of the same library to co-exist within a single
> build.
> >
> > How feasible would it be to add this feature to GHC? At a first glance
> it seems like it would help substantially.
> GHC already has this feature (and in 7.10, it will be upgraded to allow
> multiple instances of the same version of a library, but with different
> dependencies).  The problem here is that Cabal doesn't understand how
> to put dependencies together like this.
> Edward
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