#9265: Extend PackageId to include version dependency information -------------------------------------+------------------------------------ Reporter: ezyang | Owner: ezyang Type: feature request | Status: new Priority: normal | Milestone: Component: Package system | Version: 7.9 Resolution: | Keywords: backpack Operating System: Unknown/Multiple | Architecture: Unknown/Multiple Type of failure: None/Unknown | Difficulty: Unknown Test Case: | Blocked By: Blocking: | Related Tickets: -------------------------------------+------------------------------------ Comment (by rwbarton):
We do not have to deal with conflicting "instances" in GHC's package resolver: multiple instances can be simultaneously loaded and used in a single compiled program. This is because PackageIds are baked into the exported linker symbols, so different versions will have different names and can peacefully coexist.
What about packages that statically link against C libraries? Will we automatically mangle those C symbol names with the package version hash also? -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/9265#comment:2 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler