[Haskell-cafe] Need help: Cabal rejecting stringsearch, conflict in base

[Clark Gaebel]

You've got two options:

1) (the easy way)

rm -rf ~/.ghc ~/.cabal
cabal update
cabal install scotty

2) (the hard way, ghc 7.6+ only)

Use a sandbox!

cd path/to/my/project/that/uses/scotty
cabal sandbox init
cabal install --only-dependencies -j # make sure scotty is a dependency of
your project
cabal configure
cabal build

3) use cabal-dev. similar to using sandboxes, but I don't have it any more
so can't give you a step-by-step.


On Tue, Nov 26, 2013 at 7:34 PM, Thiago Negri <evohunz at gmail.com> wrote:

> I don't know what to do. :-(
> I can't install scotty or yesod.
>
> $ cabal install scotty
> cabal: Could not resolve dependencies:
> trying: scotty-0.5.0 (user goal)
> trying: base-4.7.0.0/installed-dc1... (dependency of scotty-0.5.0)
> trying: wai-extra-1.3.4.6 (dependency of scotty-0.5.0)
> trying: stringsearch-0.3.6.4 (dependency of wai-extra-1.3.4.6)
> rejecting: stringsearch-0.3.6.4:-base3 (conflict:
> base==4.7.0.0/installed-dc1..., stringsearch-0.3.6.4:base3 => base>=2 &&
> <3)
> rejecting: stringsearch-0.3.6.4:+base3 (conflict:
> base==4.7.0.0/installed-dc1..., stringsearch-0.3.6.4:base3 => base>=3 &&
> <4)
> Backjump limit reached (change with --max-backjumps).
>
>
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-- 
Clark.

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