[darcs-devel] Weak hashtables in Haskell?

[Juliusz Chroboczek]

Hi,

In order to get any half-decent performance out of Darcs-Git, I need
to cache commits.  Does anyone have an implementation of (imperative)
key-weak hashtables in Haskell?

As GHC has imperative hashtables, finalisers and weak refs, it should
not be difficult to implement, but I'd rather not do it myself.

Thanks for your help,

                                        Juliusz