But it doesn't sound like the situation @niteria has looks like this, right? I assume that you've got the ids actually unique, and you're not relying on shadowing. Your example would work just fine with unioning
#12485: -package-db flags now need to be sorted by dependency order -------------------------------------+------------------------------------- Reporter: niteria | Owner: Type: bug | Status: patch Priority: normal | Milestone: 8.0.3 Component: Package system | Version: 8.0.1 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): phab:D2613 Wiki Page: | -------------------------------------+------------------------------------- Comment (by niteria): presumably. Yes, I'm not relying on shadowing. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/12485#comment:34 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler