[Haskell-cafe] Cannot install any packages after upgrading to GHC 8.0.1

[Magicloud Magiclouds]

Thank you all. Did not know I should update cabal as well.

'ghc-pkg dump' error was just because I forgot to initialize database.

Magicloud Magiclouds <magicloud.magiclouds at gmail.com>于2016年7月11日周一 下午3:49写道：

> Hi,
> I update my GHC to 8.0.1 and failed to install any packages since then.
> If I use cabal, I got 'installed package info from too old version of
> Cabal (key field does not match id field)' for every package.
> If I use Setup.hs, I got 'Configuring Cabal-1.24.0.0...
> Setup.hs: ghc-pkg dump failed'.
> What should I do? Googling did not get me an answer.
>
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