[Haskell-beginners] cabal install errors

[Gregory Guthrie]

I didn't get any concrete remedy for this, or its underlying cause.

Does it mean that this package is incompatible with others currently installed, and I am supposed to make a choice to uninstall or break them by forcing this, or ...???

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> I tried this:
>      C:\Users\haskell>cabal install regex-tdfa
>      Resolving dependencies...
>      In order, the following would be installed:
>      regex-base-0.93.2 (reinstall) changes: array-0.3.0.2 -> 0.4.0.0, base-4.3.1.0
>      -> 4.5.0.0, bytestring-0.9.1.10 -> 0.9.2.1, containers-0.4.0.0 -> 0.4.2.1,
>      mtl-2.0.1.0 -> 2.1.2
>      regex-tdfa-1.1.8 (new package)
>      cabal: The following packages are likely to be broken by the reinstalls:
>      regex-posix-0.95.1
>      regex-compat-0.95.1
>      haskell-platform-2011.3.0.0
>      regex-posix-0.94.4
>      regex-compat-0.93.1
>      haskell-platform-2011.2.0.1
>      regex-posix-0.95.1
>      regex-compat-0.95.1
>      haskell-platform-2012.2.0.0
>      Use --force-reinstalls if you want to install anyway.
> 
> So what to do?
> >>cabal -V
> cabal-install version 0.14.0
> using version 1.14.0 of the Cabal library GHCi version 7.4.1
> HaskellPlatform-2012.2.0.0
> -------------------------------------------