#12637: ghc-pkg: Allow unregistering multiple packages in one call -------------------------------------+------------------------------------- Reporter: nh2 | Owner: Type: feature | Status: new request | Priority: normal | Milestone: Component: Compiler | Version: 8.0.1 Keywords: | Operating System: Unknown/Multiple Architecture: | Type of failure: None/Unknown Unknown/Multiple | Test Case: | Blocked By: Blocking: | Related Tickets: Differential Rev(s): | Wiki Page: -------------------------------------+------------------------------------- This can save lots of time when the cost to invoke a single GHC command is high, for example through docker. An example user of this would be `stack build`, which will unregister all relevant packages if e.g. `--extra-lib-dirs` has changed. Currently it has to do that through multiple `ghc-pkg unregister` operations, which can take about 2 seconds per call when done through a docker image. If we could unregister multiple packages at once, such use cases would have to pay the 2 seconds penalty only once. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/12637 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler