[Haskell-cafe] How to direct cabal to use an alternative ghc version, ala stack?

[Michael Snoyman]

On Thu, Sep 3, 2015 at 3:37 AM, David Banas <capn.freako at gmail.com> wrote:

> Hi all,
>
> How do I direct cabal to use an alternative (i.e. - not my system’s
> default) version of ghc, which I’ve installed, via stack?
>
> I tried this:
>
> stack exec cabal install ...
>
>
> but got this:
>
> cabal: Use of GHC's environment variable GHC_PACKAGE_PATH is incompatible
> with
> Cabal. Use the flag --package-db to specify a package database (it can be
> used
> multiple times).
>
>
> Thanks,
> -db
>
>
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>
We have a flag to working better with cabal, you can try:

    stack exec --no-ghc-package-path -- cabal install

I'm under the impression that there are changes planned to cabal (possibly
already implemented but not released) that will allow it to function nicely
with the GHC_PACKAGE_PATH environment variable, but I'm uncertain if that's
true.

Michael
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