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我正在努力在 Ubuntu 18.04 中安装液体 Haskell。我尝试了几个命令来安装依赖项，现在在液体 Haskell 的最终编译中出现错误。

我正在使用以下命令进行安装：

阴谋集团安装liquidhaskell

我得到的错误是：

cabal install liquidhaskell
Resolving dependencies...
Configuring liquidhaskell-0.8.0.5...
Building liquidhaskell-0.8.0.5...
Failed to install liquidhaskell-0.8.0.5
Build log ( /home/baber/.cabal/logs/liquidhaskell-0.8.0.5.log ):
cabal: Entering directory '/tmp/cabal-tmp-1752/liquidhaskell-0.8.0.5'
Configuring liquidhaskell-0.8.0.5...
Building liquidhaskell-0.8.0.5...
Preprocessing library liquidhaskell-0.8.0.5...
[  1 of 106] Compiling Test.Target.Expr ( src/Test/Target/Expr.hs, dist/build/Test/Target/Expr.o )
[  2 of 106] Compiling Paths_liquidhaskell ( dist/build/autogen/Paths_liquidhaskell.hs, dist/build/Paths_liquidhaskell.o )
[  3 of 106] Compiling Language.Haskell.Liquid.UX.Config ( src/Language/Haskell/Liquid/UX/Config.hs, dist/build/Language/Haskell/Liquid/UX/Config.o )
[  4 of 106] Compiling Language.Haskell.Liquid.Types.Variance ( src/Language/Haskell/Liquid/Types/Variance.hs, dist/build/Language/Haskell/Liquid/Types/Variance.o )
[  5 of 106] Compiling Language.Haskell.Liquid.Types.Specifications ( src/Language/Haskell/Liquid/Types/Specifications.hs, dist/build/Language/Haskell/Liquid/Types/Specifications.o )
[  6 of 106] Compiling Language.Haskell.Liquid.Types.Names ( src/Language/Haskell/Liquid/Types/Names.hs, dist/build/Language/Haskell/Liquid/Types/Names.o )
[  7 of 106] Compiling Language.Haskell.Liquid.ProofCombinators ( include/Language/Haskell/Liquid/ProofCombinators.hs, dist/build/Language/Haskell/Liquid/ProofCombinators.o )
[  8 of 106] Compiling Language.Haskell.Liquid.Prelude ( include/Language/Haskell/Liquid/Prelude.hs, dist/build/Language/Haskell/Liquid/Prelude.o )
[  9 of 106] Compiling Language.Haskell.Liquid.Misc ( src/Language/Haskell/Liquid/Misc.hs, dist/build/Language/Haskell/Liquid/Misc.o )

src/Language/Haskell/Liquid/Misc.hs:224:14: error:
    Ambiguous occurrence ‘=>>’
    It could refer to either ‘Language.Fixpoint.Misc.=>>’,
                             imported from ‘Language.Fixpoint.Misc’ at src/Language/Haskell/Liquid/Misc.hs:24:1-39
                          or ‘Language.Haskell.Liquid.Misc.=>>’,
                             defined at src/Language/Haskell/Liquid/Misc.hs:221:1
cabal: Leaving directory '/tmp/cabal-tmp-1752/liquidhaskell-0.8.0.5'
cabal: Error: some packages failed to install:
liquidhaskell-0.8.0.5 failed during the building phase. The exception was:
ExitFailure 1

我也尝试将 Liquidhaskell 版本降级为 7 和 6，但没有运气。有人可以帮我安装吗？

感谢您提前提供的帮助和时间。

谢谢。

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