Creators Update だと stack の配布する ghc が動かないみたい: https://github.com/commercialhaskell/stack/issues/2998 …
とりあえず GHC8.2.1 が降ってくるまで待てば良さそう * https://ghc.haskell.org/trac/ghc/ticket/13411 … * https://ghc.haskell.org/trac/ghc/milestone/8.2.1 …
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とりあえず GHC8.2.1 が降ってくるまで待てば良さそう * https://ghc.haskell.org/trac/ghc/ticket/13411 … * https://ghc.haskell.org/trac/ghc/milestone/8.2.1 …