patch applied (cabal-install): Implement plan improvement

Duncan Coutts duncan.coutts at
Sun Jun 1 20:02:33 EDT 2008

Sun Jun  1 17:00:18 PDT 2008  Duncan Coutts <duncan at>
  * Implement plan improvement
  The idea is to improve the plan by swapping a configured package for
  an equivalent installed one. For a particular package the condition
  is that the package be in a configured state, that a the same version
  be already installed with the exact same dependencies and all the
  packages in the plan that it depends on are in the installed state.

    M ./Hackage/Dependency/TopDown.hs -9 +55

View patch online:

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