[Haskell-cafe] cannot install base-4.3.1.0 package

[Daniel Fischer]

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).