Simon Marlow:
I have now summarised the concurrency proposal status, here:
http://hackage.haskell.org/cgi-bin/haskell-prime/trac.cgi/wiki/Concurren cy
I have tried to summarise the various points that have arisen during the discussion. If anyone feels they have been mis-paraphrased, or I have forgotten something, please feel free to edit, or send me some text for inclusion. I don't want to include long gobs of text in here, though: just summarise the main points, and if necessary link to relevant mailing list posts.
Good summary. Concerning the issue of preemptive versus cooperative concurrency, I still think cooperative concurrency is pretty useless. Is there any non-toy application that actually uses Hugs' current cooperative concurrency? Concerning the trouble of Hugs and Jhc to implement preemptive concurrency, IMHO that's a significant design flaw in these implementations. Preemptive concurrency is important for many applications and, if anything, will become more important with new architectures. Fundamental limits on being able to support this, fundamentally limit the application space. I'd rather not see that design flaw being transferred from these implementations to the language standard. Manuel