[Haskell-beginners] More than one GHC version installed

[Paulo Pocinho]

Quick update. I figured it out. There was a directory which didn't get
removed, toghether with cabal directory, when I uninstalled all GHC
versions.

I found the global package database actually goes into
C:\Users\<username>\AppData\Roaming\ghc\<ghc-version>. A bit strange,
considering the "local" packages get installed into C:\Program
Files\Haskell\ instead of the local user directories.

Perhaps it is a bug?

On 6 October 2011 15:17, Paulo Pocinho <pocinho at gmail.com> wrote:
> Hi.
>
> I'd like to know if it is possible to have a separate install
> directory with GHC 7.0.4 and another with GHC 7.2.1 in the same
> Windows system. I was thinking about having a standard PATH
> environment "C:\Haskell\ghc\bin". Then have a folder structure like
> "C:\Haskell\ghc-{7.2.1, 7.0.4}", renaming either one of them into
> "C:\Haskell\ghc" depending on what I would like to be using.
>
> I have taken into consideration to renaming the cabal install
> directory in the same manner. However, the problem with this approach
> is that the package database remains somewhere I can't find. Does the
> default GHC store the package database in the registry or something?
> I'd appreciate if you could hint me where I could swap the databases
> for this setup.
>