Cabal未能更新cabal-install [英] Cabal fails updating of cabal-install

问题描述

每次我安装一个库时，cabal都会告诉我安装一个新版本的cabal-install。尽管我运行（显然成功）下面列出的过程，但cabal-install的版本保持不变。我哪里出错了？ （我的操作系统是Windows 7 64位）

我的用户PATH是C：\ Users \Alberto\AppData\Roaming\cabal\bin

系统变量：CABAL_DIR = C：\ Users \Alberto\AppData\Roaming\cabal

更新之前

  C：\ Users \Alberto> cabal -V 
 cabal-install版本1.16。 0.2 
使用Cabal库的1.16.0版
 
 C：\ Users \Alberto> cabal update 
从hackage.haskell.org下载最新的软件包列表
注意：有一个新版本的cabal-install可用。 
要升级，请运行：cabal install cabal-install 
 
 C：\ Users \Alberto> cabal install cabal-install 
  

更新后

 连结dist\build\cabal \cabal.exe ... 
在C中安装可执行文件：\ Users \Alberto\AppData\Roaming\cabal\bin 
安装cabal-install-1.18.0.2 
 
 C：\Users\Alberto> cabal -V 
 cabal-install版本1.16.0.2 
使用版本1.16.0的Cabal库
  

但：

  C ：\ Users \Alberto> C：\ Users \Alberto\AppData\Roaming\cabal\bin\cabal.exe -V 
 cabal-install version 1.18.0.2 
使用Cabal库的版本1.18.1.2 
  

我很困惑。

解决方案

的输出是什么？C：\ Users \Alberto\AppData\Roaming\ cabal \\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\

Every time I install a library, cabal tells me to install a new version of cabal-install. Despite the fact that i run (with apparent success) the procedure that list below, the version of cabal-install remains unchanged. Where I am going wrong? (My OS is Window 7 64-bits)

My User PATH is C:\Users\Alberto\AppData\Roaming\cabal\bin

System variables: CABAL_DIR = C:\Users\Alberto\AppData\Roaming\cabal

BEFORE the update

C:\Users\Alberto>cabal -V
cabal-install version 1.16.0.2
using version 1.16.0 of the Cabal library

C:\Users\Alberto>cabal update
Downloading the latest package list from hackage.haskell.org
Note: there is a new version of cabal-install available.
To upgrade, run: cabal install cabal-install

C:\Users\Alberto>cabal install cabal-install

AFTER the update

Linking dist\build\cabal\cabal.exe ...
Installing executable(s) in C:\Users\Alberto\AppData\Roaming\cabal\bin
Installed cabal-install-1.18.0.2

C:\Users\Alberto>cabal -V
cabal-install version 1.16.0.2
using version 1.16.0 of the Cabal library

But:

C:\Users\Alberto>C:\Users\Alberto\AppData\Roaming\cabal\bin\cabal.exe -V
cabal-install version 1.18.0.2
using version 1.18.1.2 of the Cabal library

I am very confused about.

解决方案

What's the output of C:\Users\Alberto\AppData\Roaming\cabal\bin\cabal.exe -V?

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