Cabal安装http-conduit-browser

Question

可能这是一场如此艰难的斗争，因为我在Windows上...我最近尝试使用Git Bash离开Cabal Hell：

$ rm -R ~/AppData/Roaming/ghc ~/AppData/Roaming/cabal
$ cabal update
$ cabal install cabal-install
$ cabal install http-conduit-browser

结果是：

Failed to install http-conduit-1.9.6
Last 10 lines of the build log ( C:\Users\T\AppData\Roaming\cabal\logs\http-conduit-1.9.6.log ):
        so you can specify the instance context yourself
    When deriving the instance for (Read Cookie)

Network\HTTP\Conduit\Types.hs:239:19:
    No instance for (Show UTCTime)
      arising from the third field of `Cookie' (type `UTCTime')
    Possible fix:
      use a standalone 'deriving instance' declaration,
        so you can specify the instance context yourself
    When deriving the instance for (Show Cookie)
cabal.exe: Error: some packages failed to install:
http-conduit-1.9.6 failed during the building phase. The exception was:
ExitFailure 1
http-conduit-browser-1.9.0.2 depends on http-conduit-1.9.6 which failed to
install.

尝试安装http-conduit工作正常，但我似乎无法安装http-conduit-browser。如果这不起作用，那么还有其他库吗？我还试过了shpider但由于curl库而无法正常工作。

Answer 1

http-conduit-browser (link)的github页面建议你使用wreq (link)。

如果你想在这里使用http-conduit-browser，那就是建立http-conduit-1.9.6的技巧：

1. cabal get http-conduit-1.9.6
2. cd http-conduit-1.9.6
3. 根据此SO答案修改Network / HTTP / Conduit / Types.hs：(link) [用导入Data.Time替换导入Data.Time.Clock]
4. cabal install

现在你应该能够构建http-conduit-browser。