[Haskell-cafe] cabal issue

Graham Berks graham at fatlazycat.com
Wed May 9 10:55:52 CEST 2012

Given that I have the dependant packages already installed when I do 

$ cabal install --dry-run --global buildwrapper Resolving dependencies... In order, the following would be installed: mtl-2.1.1 (new version) aeson- (reinstall) changes: mtl- -> 2.1.1 parsec-3.1.2 (reinstall) changes: mtl- -> 2.1.1 regex-base-0.93.2 (reinstall) changes: mtl- -> 2.1.1 regex-tdfa-1.1.8 (reinstall) changes: mtl- -> 2.1.1 buildwrapper-0.5.2 (new package)

And that build wrapper doesn't have a defined dependency version number for MTL 
can someone tell me why cabal is trying to install a new version of MTL ?


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