更新基地有多安全？ [英] How safe is it to update base?

问题描述

在ubuntu上，我现在安装了haskell-platform 2011.2.0.1.2，而我
目前正在处理一些代码，在这里
Control是非常好的。 Concurrent.Chan 是 Eq 的一个实例。不幸的是，在
base-4.3.1.0 中，这是我安装的，它不是，但是在
base-4.4.0.0 Chan 是 Eq 的一个实例。

On ubuntu I currently have haskell-platform 2011.2.0.1.2 installed, and I am currently working on some code where it would be very nice to have Control.Concurrent.Chan be an instance of Eq. Unfortunately, in base-4.3.1.0, which is the one I have installed, it is not, but in base-4.4.0.0 Chan is an instance of Eq.

是否有可能通过使用 cabal-dev 或任何
其他方法对它进行沙箱更新这种方式不会破坏太多的包吗？

Would it be possible to update base, maybe by sandboxing it with cabal-dev or any other method, in a way that would not break too many packages?

推荐答案

不，你不应该升级 base 。它是引导软件包之一 - GHC自己需要构建的软件包，并随附 - 并升级它们将导致非常糟糕的事情™。 （以下是完整的启动包列表;所有内容均为 标记列是一个，不要升级这些！）

No, you should never upgrade base. It's one of the boot packages — the packages that GHC itself needs to build, and ships with — and upgrading them will lead to Very Bad Things™. (Here's a full list of boot packages; everything with a - in the tag column is one. Don't upgrade these!)

确实，cabal-install的 cabal upgrade 功能被删除，因为它有一个令人讨厌的升级引导软件包的倾向。

Indeed, cabal-install's cabal upgrade feature was removed precisely because it had a nasty tendency to upgrade boot packages.

它不仅是一个引导软件包，而且是这样的核心功能，它与固有的GHC版本有着内在的联系。您最好的选择是将GHC的相应较新版本安装在本地目录中。

Not only is it a boot package, but being such core functionality, it's pretty much inherently tied to a specific GHC version. Your best option is to install the corresponding newer version of GHC in a local directory.

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