Proposal: Remove Control.Concurrent{QSem, QSemN, , SampleVar, mergeIO, nmergeIO} from base

Ian Lynagh igloo at
Thu Jun 7 23:11:50 CEST 2012

On Thu, Jun 07, 2012 at 10:24:51PM +0200, Henning Thielemann wrote:
> +1 for deprecation cycle.

I don't think a deprecation cycle makes sense in this case:

* Only a handful of packages use these modules/functions
  (according to my very out-of-date copy of hackage, anyway).
* The code is buggy (
  so we would like people to stop using it sooner rather than later.
* It is harder for us: We don't have a good way to track tasks that need
  to be done at some point in the future.


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