patch applied (cabal-install): Improve InstallPlan error checking
duncan.coutts at worc.ox.ac.uk
Tue May 6 20:34:38 EDT 2008
Sun May 4 13:18:57 PDT 2008 Duncan Coutts <duncan at haskell.org>
* Improve InstallPlan error checking and reporting
Instead of just reporting that a plan is invalid, produce a
detailed list of reasons why it is invalid.
This should be useful for people debugging dependency resolvers.
Also rename the complete property to closed, since the property
is about the set being closed under the dependency relation.
Also re-use the PackageIndex functions for checking the validity
conditions rather than re-implementing the checks locally.
M ./Hackage/InstallPlan.hs -105 +234
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