#12660: singletons doesn't compile with GHC 8.0.2 snapshot -------------------------------------+------------------------------------- Reporter: bgamari | Owner: Type: bug | Status: new Priority: normal | Milestone: 8.0.2 Component: Compiler | Version: 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): Trying to reproduce this. But when I try `cabal install singletons` (with the HEAD ghc) I get {{{ [3 of 8] Compiling Language.Haskell.TH.Desugar.Core ( Language\Haskell\TH\Desugar\Core.hs, dist\build\Language\Haskell\TH\Desugar\Core.o ) Language\Haskell\TH\Desugar\Core.hs:713:21: error: Ambiguous occurrence Newtype It could refer to either Language.Haskell.TH.Syntax.Newtype , imported from Language.Haskell.TH.Syntax at Language\Haskell\TH\Desugar\Core.hs:18:1-47 or Language.Haskell.TH.Desugar.Core.Newtype , defined at Language\Haskell\TH\Desugar\Core.hs:108:18 Language\Haskell\TH\Desugar\Core.hs:764:25: error: Ambiguous occurrence Newtype It could refer to either Language.Haskell.TH.Syntax.Newtype , imported from Language.Haskell.TH.Syntax at Language\Haskell\TH\Desugar\Core.hs:18:1-47 or Language.Haskell.TH.Desugar.Core.Newtype , defined at Language\Haskell\TH\Desugar\Core.hs:108:18 }}} What am I doing wrong? -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/12660#comment:5 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler