First of all, thank you for your suggestions.

You can try GitHub's code search

For the moment I am ignoring Github because it's harder to separate stable development from unstable. Even so, it might be worth the trouble to check out github soon. Thank you, Lucas.

Also take a look at Control.Concurrent.Chan in the base library:

Yes, the base package seems like a good one for inclusion. Thank you, Bas.

[]'s
--
Francisco


2013/6/12 Bas van Dijk <v.dijk.bas@gmail.com>
On 12 June 2013 21:29, Francisco M. Soares Nt.
<xfrancisco.soares@gmail.com> wrote:
> I am looking for packages on hackage which use MVars extensively. Those
> which create plenty of MVars

Hi Francisco,

Also take a look at Control.Concurrent.Chan in the base library:

http://hackage.haskell.org/packages/archive/base/latest/doc/html/Control-Concurrent-Chan.html

A big Chan has a lot of MVars inside.

Bas