#14052: Significant GHCi speed regression with :module and `let` in GHC 8.2.1 -------------------------------------+------------------------------------- Reporter: RyanGlScott | Owner: osa1 Type: bug | Status: patch Priority: high | Milestone: 8.4.2 Component: GHCi | Version: 8.2.1-rc2 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: Runtime | Unknown/Multiple performance bug | Test Case: Blocked By: | Blocking: Related Tickets: #11547 | Differential Rev(s): Phab:D4478 Wiki Page: | -------------------------------------+------------------------------------- Comment (by mniip): I don't hold any strong opinion on how the shadowed identifiers should behave, but whichever way it is, I don't think an error similar to one in #11547 is appropriate. Perhaps it is best to hide the `Ghci#` modules in renamer too? -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/14052#comment:20 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler