目前,当我尝试安装 GOA 时,我收到以下消息:
>sudo cabal install goa
Resolving dependencies...
In order, the following would be installed:
directory-1.1.0.2 (reinstall) changes: filepath-1.3.0.0 -> 1.2.0.1
process-1.0.1.5 (new version)
goa-3.1 (new package)
cabal: The following packages are likely to be broken by the reinstalls:
....
我的问题是这是否意味着我目前将“filepath-1.3.0.0”作为默认值,而 cabal(在 --force-reinstalls 之后)将覆盖它并将“filepath-1.2.0.1”作为默认值?我有点困惑的原因是当我查看位置时:
阴谋集团/packages/hackage.haskell.org/filepath
我发现 1.2.0.1 和 1.3.0.0 都存在。此外,命令“cabal list filepath”表示两个软件包都已安装(请参阅下面的“已安装版本:1.2.0.1、1.3.0.0”):
>cabal list filepath
......
* filepath
Synopsis: Library for manipulating FilePaths in a cross platform way.
Default available version: 1.3.0.1
Installed versions: 1.2.0.1, 1.3.0.0
Homepage: http://www-users.cs.york.ac.uk/~ndm/filepath/
License: BSD3