如何将 runhaskell 与 cabal-dev 一起使用？
不幸的是 cabal-dev ghci 在这个项目中不起作用，我收到一个错误：
Loading package download-0.3.2 ... linking ...
ghc: /home/stulli/haskell/ifdl/cabal-dev//lib/download-0.3.2/ghc-7.4.1/HSdownload-0.3.2.o: unknown symbol `stat64'
ghc: unable to load package `download-0.3.2'
所以我尝试 runhaskell，但它使用与 cabal 而不是 cabal-dev 一起安装的软件包，因此失败。
更新： runhaskell 会产生相同的错误：
$ runhaskell -isrc:src/test -package-conf=cabal-dev/packages-7.4.1.conf src/test/Test.hs
Test.hs: /home/stulli/haskell/ifdl/cabal-dev//lib/download-0.3.2/ghc-7.4.1/HSdownload-0.3.2.o: unknown symbol `stat64'
Test.hs: Test.hs: unable to load package `download-0.3.2'
另一方面， cabal-dev install 可以正常工作。
Unfortunately cabal-dev ghci does not work in this project, i get an error:
Loading package download-0.3.2 ... linking ...
ghc: /home/stulli/haskell/ifdl/cabal-dev//lib/download-0.3.2/ghc-7.4.1/HSdownload-0.3.2.o: unknown symbol `stat64'
ghc: unable to load package `download-0.3.2'
So i try runhaskell, but it uses the packages that come installed with cabal instead of cabal-dev and thus fails.
update:
runhaskell produces the same error:
$ runhaskell -isrc:src/test -package-conf=cabal-dev/packages-7.4.1.conf src/test/Test.hs
Test.hs: /home/stulli/haskell/ifdl/cabal-dev//lib/download-0.3.2/ghc-7.4.1/HSdownload-0.3.2.o: unknown symbol `stat64'
Test.hs: Test.hs: unable to load package `download-0.3.2'
cabal-dev install on the other hand works without problems.
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评论（3）
您可以尝试类似以下的操作：
但我认为如果
cabal-dev ghci不起作用，那么runhaskell也将不起作用。您需要找出download包有什么问题。You can try something like the next:
But I think if
cabal-dev ghcidoesn't work, thenrunhaskellwill not work too. You need to find out what is wrong withdownloadpackage.要将
runhaskell与 cabal 沙箱 (cabal >= 1.18) 一起使用，请运行命令，并将正确的
*-packages.conf.d目录替换为您的 GHC 版本。To use
runhaskellwith cabal sandboxes (cabal >= 1.18), run the commandsubstituting the proper
*-packages.conf.ddirectory for your GHC version.cabal-dev设置对于ghci来说效果不佳，因此很可能它对于runhaskell也效果不佳>。也许 virthualenv 更适合这个用例？The
cabal-devsetup doesn't work very well forghci, so it might very well be that it also doesn't work well forrunhaskell. Maybe virthualenv will work better for this use case?