#174: cabal-install tries to upgrade the base package ---------------------------------+------------------------------------------ Reporter: duncan | Owner: Type: defect | Status: new Priority: normal | Milestone: Component: cabal-install tool | Version: 1.2.2.0 Severity: normal | Resolution: Keywords: | Difficulty: normal Ghcversion: 6.6 | Platform: Linux ---------------------------------+------------------------------------------ Comment (by duncan): This is now trivial to fix. We just exclude all versions of the `base` package from the index of available packages that we hand to the dependency resolver: {{{ dependencyResolver resolver os arch comp installed available deps = ! case resolver os arch comp (hideBrokenPackages installed) available deps of Left unresolved -> Left unresolved --- 87,91 ---- dependencyResolver resolver os arch comp installed available deps = ! let installed' = hideBrokenPackages installed ! available' = hideBasePackage available ! in case resolver os arch comp installed' available' deps of }}} That encodes the fact that although the base package may be available, we cannot actually rebuild the base package or install any new version of it. We should probably do the same for any other magic builtin ghc packages that are not upgradable. -- Ticket URL: http://hackage.haskell.org/trac/hackage/ticket/174#comment:6 Hackage http://haskell.org/cabal/ Hackage: Cabal and related projects