Can you try with `-fno-warn-overlapping-patterns -fno-warn-incomplete-
#11239: GHC HEAD: cannot bootstrap HEAD with HEAD -------------------------------------+------------------------------------- Reporter: heisenbug | Owner: Type: bug | Status: new Priority: high | Milestone: 8.0.1 Component: Compiler | Version: 7.11 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: Building GHC | Unknown/Multiple failed | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by heisenbug): Replying to [comment:5 mpickering]: patterns`? BINGO! Doing this manually allowed me to continue bootstrapping :-) -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/11239#comment:7 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler