我如何在新的cabal 1.17沙箱中使用GHCi？ [英] How can I use GHCi with the new cabal 1.17 sandboxes?

问题描述

我一直在试用支持类似于cabal-dev的沙箱的cabal头。然而，目前还不支持 cabal-dev ghci 等效和显然没有计划的支持下一个版本。

I've been trying out cabal head which has support for sandboxes similar to cabal-dev. However there's not yet support for a cabal-dev ghci equivalent and apparently no support planned for the next release.

是否有一些咒语可以用来解决这个问题，并得到类似于 cabal-dev ghci ？

Is there some incantation I can use to work around this and get something similar to cabal-dev ghci?

推荐答案

edit（2013年8月）： cabal repl 补丁。这个功能将成为下一个版本的一部分。

edit (August 2013): The cabal repl patches have recently been merged. This functionality will be a part of the next release.

在撰写本文时，没有简单易用的类似于 cabal-dev ghci 。我们计划在将来添加 cabal repl 命令 - 但是，此功能目前不在Cabal HEAD中。

As of this writing, there is no easy-to-use analogue to cabal-dev ghci. We plan to add a cabal repl command in the future - however, at the moment this functionality is not in Cabal HEAD.

在此期间，您可以尝试以下解决方法：

In the meantime, you can try the following workaround:

$ cd $YOUR_PACKAGE_DIR

# For GHC >= 7.6
$ ghci -no-user-package-db -package-db .cabal-sandbox/i386-linux-ghc-7.6.1-packages.conf.d

# For GHC < 7.6
$ ghci -no-user-package-conf -package-conf .cabal-sandbox/i386-linux-ghc-7.4.2-packages.conf.d

这不会使您的软件包模块立即从 ghci 可用 - 您必须使用加载它们：l 或 import （它可以在自定义预处理器和CPP出现时中断）。

This won't make the modules of your package immediately available from ghci - you will have to load them with :l or import (which can break in the presence of custom preprocessors and CPP).

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