patch applied (cabal): Add PackageIndex.dependencyCycles

4 May 2008

      Sun May  4 06:16:26 PDT 2008  Duncan Coutts 
  * 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.

    M ./Distribution/Simple/PackageIndex.hs +18

View patch online:
http://darcs.haskell.org/cabal/_darcs/patches/20080504131626-adfee-73906b092...