Re: [GHC] #11046: lookupTypeName does not support type operators not starting with :

#11046: lookupTypeName does not support type operators not starting with : -------------------------------------+------------------------------------- Reporter: oerjan | Owner: Type: bug | Status: new Priority: high | Milestone: 8.0.1 Component: Template Haskell | Version: 7.10.2 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: GHC rejects | Unknown/Multiple valid program | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by thomie): Relevant commit 85926ae6c63a62e4f23423f220588875c8f1ab45: {{{ Author: Iavor S. Diatchki Date: Sun Jan 8 16:33:51 2012 -0800 Change -XTypeOperators to treat all type-operators as type- constructors. Previously, only type operators starting with ":" were type constructors, and writing "+" in a type resulted in a type variable. Now, type variables are always ordinary identifiers, and all operators are treated as constructors. One can still write type variables in infix form though, for example, "a `fun` b" is a type expression with 3 type variables: "a", "fun", and "b". Writing (+) in an import/export list always refers to the value (+) and not the type. To refer to the type one can write either "type (+)", or provide an explicit suobrdinate list (e.g., "(+)()"). For clarity, one can also combine the two, for example "type (+)(A,B,C)" is also accepted and means the same thing as "(+)(A,B,C)" (i.e., export the type (+), with the constructors A,B,and C). }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/11046#comment:4 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler