[bug] ModOrigin: hidden module redefined

  1 import Haste
  2 import Haste.DOM
  3 import Haste.Graphics.Canvas
  4 import Control.Monad
  5
  6 mkCanvas width height = do
  7   canvas <- newElem "canvas"
  8   setProp canvas "width" $ show width
  9   setProp canvas "height" $ show height
 10   let conf = [("display", "block"), ("border", "1px solid black"), ("margin", "0px auto 0 aut    o"), ("backgroundColor", "black")]
 11   mapM_ (\(style, value) -> setStyle canvas style value) conf
 12   return canvas
 13
 14 picture = fill $ rect (0, 0) (600, 600)
 15
 16 main = do
 17   canv <- mkCanvas 600 600
 18   addChild canv documentBody
 19   Just canv <- getCanvas canv
 20   render canv picture

---

hello.hs:18:3: Warning:hastec: hastec: panic! (the 'impossible' happened)

(GHC version 7.10.2 for x86_64-unknown-linux):

ModOrigin: hidden module redefined

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

I was following the tutorial on http://ifeanyi.co/posts/client-side-haskell/ and got this bug.

Trac metadata

Trac field	Value
Version	7.10.2
Type	Bug
TypeOfFailure	OtherFailure
Priority	normal
Resolution	Unresolved
Component	Compiler
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