Add PackageIndex.dependencyCycles
Add PackageIndex.dependencyCycles

Finds any cycles (strongly connected components) in the dependencies
of set of packages. This is useful for checking the correctness of
installation plans.

20080504131626-adfee-73906b092fb48bd20ff2ed6aea47bea26ec886a5.gz

dcreager/cabal,dcreager/cabal