Re: [GHC] #8649: Disambiguate Repeated Identifiers for data types in error messages

#8649: Disambiguate Repeated Identifiers for data types in error messages ---------------------------------------+----------------------------------- Reporter: agibiansky | Owner: Type: bug | Status: closed Priority: normal | Milestone: Component: Compiler | Version: 7.6.3 Resolution: fixed | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: None/Unknown | Unknown/Multiple Test Case: ghci/scripts/T8649 | Difficulty: Unknown Blocking: | Blocked By: | Related Tickets: ---------------------------------------+----------------------------------- Comment (by Simon Peyton Jones ): In [changeset:"28e8d878b63d06824001ac3a631254679e0f1960/ghc"]: {{{ #!CommitTicketReference repository="ghc" revision="28e8d878b63d06824001ac3a631254679e0f1960" Simplify handling of the interactive package; fixes Trac #8831 This patch is really a fix to the big commint 73c08ab10e4077e18e459a1325996bff110360c3 Re-work the naming story for the GHCi prompt (Trac #8649) which introduced the 'interactive' package See Note [The interactive package] in HscTypes The original commit set both (a) The tcg_mod field of TcGblEnv to 'interactive:Ghci4' (say) (b) The thisPackage field of DynFlags to 'interactive' But the second step interacts badly with linking. :loaded modules are in the package set by 'thisPackage' (usually 'main'); if you change that, then we try to link package 'main', but can't find it, and that is what happened in #8831. The fix was simple: do (a) but not (b). I changed Note [The interactive package] in HscTypes to describe this. }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/8649#comment:5 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler