#697: Add "cabal install --only-dependencies" flag ---------------------------------+------------------------------------------ Reporter: igloo | Owner: Type: enhancement | Status: new Priority: normal | Milestone: Component: cabal-install tool | Version: HEAD Severity: major | Keywords: Difficulty: unknown | Ghcversion: Platform: | ---------------------------------+------------------------------------------ Comment(by j3h): Please excuse the accidental double form submission, the two attached files are identical. The patch implements an `--only-dependencies` flag for the `install` command. My resolution for the case that Duncan described above, where a user requests dependencies only and then specifies a necessary dependency on the command line, installation fails with an error message. In addition to the options that Duncan mentioned for this case, there is a third option, which is to install only the dependencies that can be satisfied ''without'' installing any explicitly mentioned package. The behavior in this case is not very important to me, because I expect only to use this flag when actively developing a package, so the only excluded package would be the root of the dependency DAG, which can always be safely removed. It occurs to me as well that another sensible interface to this functionality (especially for development purposes) would be {{{ cabal configure --install-missing-dependencies }}} -- Ticket URL: http://hackage.haskell.org/trac/hackage/ticket/697#comment:3 Hackage http://haskell.org/cabal/ Hackage: Cabal and related projects