[Haskell-beginners] cabal install hakyll: global constraint requires installed instance + other conflicts

[Daniel Trstenjak]

On Thu, Aug 25, 2016 at 02:18:02PM +0200, Stanislaw Findeisen wrote:
> $ .cabal-sandbox/bin/cabal install hakyll

Wait, have you installed 'cabal-install' into the same sandbox as
hakyll? That might cause the issues. Use a separate sandbox for hakyll.