Give a more verbose error message when desugaring a HsTypeOut
Give a more verbose error message when desugaring a HsTypeOut

Reviewers: austin, bgamari

Reviewed By: bgamari

Subscribers: thomie

Differential Revision: https://phabricator.haskell.org/D1826

tjakway/ghcjvm,oldmanmike/ghc,nushio3/ghc,vTurbine/ghc,nushio3/ghc,vikraman/ghc,vTurbine/ghc,sgillespie/ghc,oldmanmike/ghc,shlevy/ghc,mettekou/ghc,vTurbine/ghc,tjakway/ghcjvm,sgillespie/ghc,tjakway/ghcjvm,oldmanmike/ghc,shlevy/ghc,shlevy/ghc,sdiehl/ghc,shlevy/ghc,sgillespie/ghc,oldmanmike/ghc,mcschroeder/ghc,olsner/ghc,tjakway/ghcjvm,sgillespie/ghc,oldmanmike/ghc,mcschroeder/ghc,vTurbine/ghc,olsner/ghc,ezyang/ghc,nushio3/ghc,olsner/ghc,oldmanmike/ghc,olsner/ghc,ezyang/ghc,sdiehl/ghc,snoyberg/ghc,vikraman/ghc,shlevy/ghc,vikraman/ghc,nushio3/ghc,shlevy/ghc,olsner/ghc,snoyberg/ghc,ezyang/ghc,snoyberg/ghc,mcschroeder/ghc,ezyang/ghc,olsner/ghc,mettekou/ghc,snoyberg/ghc,sdiehl/ghc,vikraman/ghc,sdiehl/ghc,vikraman/ghc,olsner/ghc,mettekou/ghc,ezyang/ghc,tjakway/ghcjvm,mettekou/ghc,snoyberg/ghc,tjakway/ghcjvm,vTurbine/ghc,mettekou/ghc,nushio3/ghc,mcschroeder/ghc,mettekou/ghc,sgillespie/ghc,mcschroeder/ghc,sgillespie/ghc,vikraman/ghc,mettekou/ghc,tjakway/ghcjvm,vTurbine/ghc,nushio3/ghc,ezyang/ghc,sdiehl/ghc,ezyang/ghc,sdiehl/ghc,vTurbine/ghc,snoyberg/ghc,snoyberg/ghc,sdiehl/ghc,nushio3/ghc,sgillespie/ghc,mcschroeder/ghc,shlevy/ghc,mcschroeder/ghc,vikraman/ghc,oldmanmike/ghc