如何使用cabal安装安装haddock

我试图通过运行以下命令cabal install haddock来安装haddock，但我通过了以下问题。如何使用cabal安装安装haddock

[email protected]:~/opt$ cabal install haddock 
Resolving dependencies... 
Configuring haddock-2.11.0... 
Building haddock-2.11.0... 
Preprocessing library haddock-2.11.0... 
unused terminals: 1 
[ 1 of 31] Compiling Haddock.Backends.HaddockDB (src/Haddock/Backends/HaddockDB.hs, dist/build/Haddock/Backends/HaddockDB.o) 
[ 2 of 31] Compiling Haddock.Backends.Xhtml.Types (src/Haddock/Backends/Xhtml/Types.hs, dist/build/Haddock/Backends/Xhtml/Types.o) 
[ 3 of 31] Compiling Haddock.Convert (src/Haddock/Convert.hs, dist/build/Haddock/Convert.o) 
[ 4 of 31] Compiling Paths_haddock (dist/build/autogen/Paths_haddock.hs,  dist/build/Paths_haddock.o) 
[ 5 of 31] Compiling Haddock.GhcUtils (src/Haddock/GhcUtils.hs, dist/build/Haddock/GhcUtils.o) 
[ 6 of 31] Compiling Haddock.Version (src/Haddock/Version.hs, dist/build/Haddock/Version.o) 
[ 7 of 31] Compiling Haddock.Lex  (dist/build/Haddock/Lex.hs, dist/build/Haddock/Lex.o) 
[ 8 of 31] Compiling Haddock.Types (src/Haddock/Types.hs, dist/build/Haddock/Types.o) 
[ 9 of 31] Compiling Haddock.Utils (src/Haddock/Utils.hs, dist/build/Haddock/Utils.o) 
[10 of 31] Compiling Haddock.Options (src/Haddock/Options.hs, dist/build/Haddock/Options.o) 
[11 of 31] Compiling Haddock.Backends.Xhtml.Themes (src/Haddock/Backends/Xhtml/Themes.hs, dist/build/Haddock/Backends/Xhtml/Themes.o) 
[12 of 31] Compiling Haddock.Backends.Xhtml.Utils (src/Haddock/Backends/Xhtml/Utils.hs, dist/build/Haddock/Backends/Xhtml/Utils.o) 
[13 of 31] Compiling Haddock.Backends.LaTeX (src/Haddock/Backends/LaTeX.hs, dist/build/Haddock/Backends/LaTeX.o) 
[14 of 31] Compiling Haddock.Backends.Hoogle (src/Haddock/Backends/Hoogle.hs, dist/build/Haddock/Backends/Hoogle.o) 
[15 of 31] Compiling Haddock.Interface.AttachInstances (src/Haddock/Interface/AttachInstances.hs, dist/build/Haddock/Interface/AttachInstances.o) 
[16 of 31] Compiling Haddock.Interface.Rename (src/Haddock/Interface/Rename.hs, dist/build/Haddock/Interface/Rename.o) 
[17 of 31] Compiling Haddock.Doc  (src/Haddock/Doc.hs, dist/build/Haddock/Doc.o) 
[18 of 31] Compiling Haddock.Parse (dist/build/Haddock/Parse.hs, dist/build/Haddock/Parse.o) 
[19 of 31] Compiling Haddock.Interface.ParseModuleHeader (src/Haddock/Interface/ParseModuleHeader.hs, dist/build/Haddock/Interface/ParseModuleHeader.o) 
[20 of 31] Compiling Haddock.Interface.LexParseRn (src/Haddock/Interface/LexParseRn.hs, dist/build/Haddock/Interface/LexParseRn.o) 

src/Haddock/Interface/LexParseRn.hs:67:52: 
Not in scope: type constructor or class `SafeHaskellMode' 
cabal: Error: some packages failed to install: 
haddock-2.11.0 failed during the building phase. The exception was: 
ExitFailure 1 
[email protected]:~/opt$

是否有人知道如何处理这个混乱？

编辑我GHC版本是7.4.1

来源

2012-10-24 Fopa Léon Constantin

你有什么版本的ghc，你上次运行'cabal update'的时间是？ – asm

我的ghc版本是'7.4.1'，最后一次cabal更新已经完成，没有任何问题的结果。 –

如今，黑线鳕版本紧密结合到GHC版本。对于ghc-7.4.1，相应的haddock版本是2.10.0。

在ghc-7.4.2中添加了错误消息中引用的SafeHaskellMode类型，因此您无法使用ghc-7.4.1编译haddock-2.11。

你应该有一个工作在你的GHC的haddock-2.10。如果没有，你可以安装haddock-2.10.0，或者你可以升级你的GHC（建议，自7.4.1以来，有一些bug已经修复）。

来源

2012-10-24 20:27:25

伟大的答案！让我建议一个小编辑：而不是'cabal安装haddock'你应该使用'cabal install haddock-2.10.0' –

如何使用cabal安装安装haddock

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