#15765: Make the "extract" functions in RnTypes pure -------------------------------------+------------------------------------- Reporter: goldfire | Owner: (none) Type: task | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.6.1 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by simonpj): Good plan -- let's fix! -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/15765#comment:1 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler

#15765: Make the "extract" functions in RnTypes pure -------------------------------------+------------------------------------- Reporter: goldfire | Owner: simonpj Type: task | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.6.1 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by Simon Peyton Jones ): In [changeset:"e6bf96c9700aacbd75169dbf2cc14c9216c0133f/ghc" e6bf96c9/ghc]: {{{ #!CommitTicketReference repository="ghc" revision="e6bf96c9700aacbd75169dbf2cc14c9216c0133f" De-monadise the 'extract' functions in RnTypes As Trac #15765 says, Once upon a time, the extract functions at the bottom of RnTypes were pure. Then, along came -XTypeInType, which needed to do a check in these functions for users mixing type variables with kind variables. Now, however, with -XTypeInType gone again, we no longer do this check. Thus, there is no reason to keep these functions monadic. }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/15765#comment:3 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler