Head's up, yall: Cabal's dir layout changed

[Carter Schonwald]

I'll admit i've pushed a lot of haskell platform users to migrate to 1.20
style ~/.cabal/config's for a while :)



On Thu, Jul 3, 2014 at 6:35 PM, Mark Lentczner <mark.lentczner at gmail.com>
wrote:

> I just noticed that the default directory layout that cabal uses (under
> .cabal) has changed between 1.16 and 1.18. In particular:
>
> In 1.16
>   -- libsubdir: $pkgid/$compiler
>   -- datasubdir: $pkgid
>   -- docdir: $datadir/doc/$pkgid
>
> in 1.18
>   -- libsubdir: $arch-$os-$compiler/$pkgid
>   -- datasubdir: $arch-$os-$compiler/$pkgid
>   -- docdir: $datadir/doc/$arch-$os-$compiler/$pkgid
>
> This is a rather big change: When the same package is built with multiple
> compilers, before they were stored all under the same dir, now the packages
> are grouped by compiler.
>
> This change is actually better from a system-installer (and uninstaller)
> point of view, and the Mac platfrom has been shipping with a customer cabal
> wrapper that sets up the user's default in a similar fashion for years.
>
> This change breaks the existing uninstaller, and will require some
> retrenching on the platform... I'm going to try to reconcile the existing
> "Mac way" with the "new way" since they are closer.
>
> - Mark
>
>
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