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

It looks like you're using ghc7.7 (soon 7.8) since you're on base-4.7. A lot of packages just aren't ready for ghc7.7. Either they need bumps to their dependencies or they need Typeable updates or...or... If you want to live in the future I'd suggest following the packages in question to their git repos, cloning them and using those (and possibly patching them). I've been doing as much of this as I can and it's been working! Though I may be misunderstanding your problem and in that case - ignore me! :) On Tue, Nov 26, 2013 at 4:41 PM, Clark Gaebel wrote:

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 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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