On Sunday 15 May 2011 16:35:35, Immanuel Normann wrote:
Hi, how can I install the base-4.3.1.0 package. I tried first
No. That can't work (at least with GHC). The base package is one of the packages that the compiler was built with, it is impossible to replace it and have a working compiler (again, GHC, for other compilers it might be possible, but I don't think it currently is for any). If you want a compiler with bae-4.3.1.0, install a compiler that was built with it (ghc-7.0.*). Other packages you cannot replace are process, directory, array, containers, integer-(gmp|simple), ghc, ghc-prim, ..., basically everything that comes with a vanilla ghc install (except Cabal, you can install a different version of Cabal without breaking things, afaik).