Hello Thomas, Tuesday, October 14, 2008, 2:46:45 PM, you wrote:
The issue is binary compatibility. At the moment, GHC cannot make sure that a library compiled with an older GHC can work with a newer GHC. GHC does many cross-module optimisations, and its runtime system changes occasionally, so it is very pessimistic in that regard. This becomes an issue for packages that GHC has been build with itself (like base, process, array), since these cannot be upgraded without recompiling GHC (hence requiring recompiling every other package).
is this correct? i was under impression that upgrading packages never require to recompile GHC itself. it just happen that we have only one version of base or array shipped with each GHC and at least with array this can be changed easily (and for base too - just noone plans to do it) -- Best regards, Bulat mailto:Bulat.Ziganshin@gmail.com