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ghc: panic! (the 'impossible' happened): find_tycon Block []

I just tried building yesod-simple template project with nightly-2016-05-29 snapshot and some extra-deps package, and it seems to fail due to $(widgetFile ...) yesod template haskell clause.

It was same on linux and windows, and when I remove handler ghc fails at Application module (and seems also due to template haskell).

~/yt> stack build
...
yt-0.0.0: configure
Configuring yt-0.0.0...
yt-0.0.0: build
Preprocessing library yt-0.0.0...
[1 of 9] Compiling Settings         ( Settings.hs, .stack-work/dist/x86_64-linux/Cabal-1.24.0.0/build/Settings.o )
[2 of 9] Compiling Settings.StaticFiles ( Settings/StaticFiles.hs, .stack-work/dist/x86_64-linux/Cabal-1.24.0.0/build/Settings/StaticFiles.o )
[3 of 9] Compiling Import.NoFoundation ( Import/NoFoundation.hs, .stack-work/dist/x86_64-linux/Cabal-1.24.0.0/build/Import/NoFoundation.o )
[4 of 9] Compiling Foundation       ( Foundation.hs, .stack-work/dist/x86_64-linux/Cabal-1.24.0.0/build/Foundation.o )
[5 of 9] Compiling Import           ( Import.hs, .stack-work/dist/x86_64-linux/Cabal-1.24.0.0/build/Import.o )
[6 of 9] Compiling Handler.Common   ( Handler/Common.hs, .stack-work/dist/x86_64-linux/Cabal-1.24.0.0/build/Handler/Common.o )
[7 of 9] Compiling Handler.Home     ( Handler/Home.hs, .stack-work/dist/x86_64-linux/Cabal-1.24.0.0/build/Handler/Home.o )
ghc: panic! (the 'impossible' happened)
  (GHC version 8.0.1 for x86_64-unknown-linux):
        find_tycon
  Block
  []

Please report this as a GHC bug:  http://www.haskell.org/ghc/reportabug

Completed 179 action(s).

--  While building package yt-0.0.0 using:
      /home/jeiea/.stack/setup-exe-cache/x86_64-linux/setup-Simple-Cabal-1.24.0.0-ghc-8.0.1 --builddir=.stack-work/dist/x86_64-linux/Cabal-1.24.0.0 build lib:yt exe:yt --ghc-options " -ddump-hi -ddump-to-file"
    Process exited with code: ExitFailure 1
Trac metadata
Trac field Value
Version 8.0.1
Type Bug
TypeOfFailure OtherFailure
Priority normal
Resolution Unresolved
Component Template Haskell
Test case
Differential revisions
BlockedBy
Related
Blocking
CC
Operating system
Architecture
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