On Sun, Nov 20, 2011 at 03:57:04PM +0100, Peter Simons wrote: > Hi Vesa, > > > I've found out a little late that the 7.2 series is supposedly some sort > > of a "technology preview" branch. While I think it's totally > > irresponsible and moronic for the GHC devs to release a point release > > that's not supposed to be widely used [...]. > > actually, GHC 7.2.x is quite stable and it's perfectly alright to use it in > production. It's been dubbed a "technology preview" because the compiler > breaks backwards compatibility in ways that require library authors to > update their code. Those who don't want to deal with that situation ought to > stick to 7.0.4. However, those incompatibilities are not going to disappear > by themselves. The 7.4.x release is not going to be different in that > regard. > > > We'll have to think about if we really want 7.2 or do we wait for 7.4. > > It comes down to the question: are you willing to patch lots of packages to > fix compilation? If you don't want to do that, then you'll be stuck with > 7.0.4 for quite some time. If you don't mind patching packages to fix > compilation, then updating to 7.2.2 right now is a fine choice.
I'm under the impression that there already are rather a lot of packages that are updated to deal with changes in 7.2. I don't have any numbers on that though, are there any such numbers ready available? If so they could offer a good indication of the amount of work that an upgrade would require. /M -- Magnus Therning OpenPGP: 0xAB4DFBA4 email: [email protected] jabber: [email protected] twitter: magthe http://therning.org/magnus I invented the term Object-Oriented, and I can tell you I did not have C++ in mind. -- Alan Kay
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