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为什么这个 OR 依赖项没有按我的预期工作

tag-icon • tag-icon debian apt
为什么这个 OR 依赖项没有按我的预期工作

我尝试删除python2.6从我的 Debian 系统：

$ sudo apt-get purge python2.6
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following packages will be REMOVED:
  fabric* python-nose* python-pip* python2.6*
0 upgraded, 0 newly installed, 4 to remove and 0 not upgraded.
After this operation, 11.0 MB disk space will be freed.
Do you want to continue [Y/n]? n
Abort.

我没有期待fabric被删除，因为它具有 OR 依赖关系python2.6和python2.7（我安装了后者）：

$ apt-cache show fabric | grep Depends
Depends: python2.7 | python2.6, python (>= 2.6.6-7~), python (<< 2.8), python-paramiko (>= 1.6), python-pkg-resources, python-nose

答案1

检查对其他包的反向依赖性揭示了原因：

$ apt-cache show python-nose | grep Depends
Depends: python-pkg-resources, python2.7, python (>= 2.6.6-7~), python (<< 2.8), python2.6

已经有一个错误报告了该问题。

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