#408: cabal install / cabal update should give warning when preferred versions will result in something other than the latest version on hackage ---------------------------------+------------------------------------------ Reporter: tphyahoo | Owner: duncan coutts Type: enhancement | Status: new Priority: normal | Milestone: Component: cabal-install tool | Version: HEAD Severity: normal | Keywords: Difficulty: normal | Ghcversion: 6.8.3 Platform: | ---------------------------------+------------------------------------------ The natural assumption, unless you know better, is that cabal install -- and especially cabal upgrade -- will install the latest verion of a package on hackage. But the preferred-version machinery invalidates this assumptijon. The suggestions is to emit a warning like {{{ cabal install haxml Downloading HaXml-1.13.3... Note: the preferred version is HaXml-1.13.3 but latest version is HaXml-1.19, so put Build-Depends: HaXml == 1.19.4 in your cabal file if you want that version. }}} I would have this message pop up for both cabal install and cabal upgrade See http://groups.google.com/group/fa.haskell/browse_thread/thread/c39dca259a948... for discussion thread. -- Ticket URL: http://hackage.haskell.org/trac/hackage/ticket/408 Hackage http://haskell.org/cabal/ Hackage: Cabal and related projects