python - Ubuntu16.04:The following packages have unmet dependencies？

问题描述

问 题

最近不知道设置了什么，现在在ubuntu16.04上使用apt安装软件都失败：

$ sudo apt-get upgrade                                                                                                                                   
Reading package lists... Done
Building dependency tree 
Reading state information... Done
You might want to run 'apt-get -f install' to correct these.
The following packages have unmet dependencies:
 libglib2.0-dev : Depends: libglib2.0-0 (= 2.48.1-1~ubuntu16.04.1) but 2.48.2-0ubuntu1 is installed
                  Depends: libglib2.0-bin (= 2.48.1-1~ubuntu16.04.1)
E: Unmet dependencies. Try using -f.

ps: sudo apt install ipython也是报同样的错误

然后我按照提示进行修复：

$ sudo apt-get -f install
Extracting templates from packages: 100%
Preconfiguring packages ...
dpkg: error processing package libglib2.0-dev (--remove):
 package is in a very bad inconsistent state; you should
 reinstall it before attempting a removal
Errors were encountered while processing:
 libglib2.0-dev
E: Sub-process /usr/bin/dpkg returned an error code (1)

准备卸载libglib2.0-dev，却无法卸载，而且报错信息和上面一样，提示reinstall，但是apt命令没有reinstall参数

$ sudo apt-get remove libglib2.0-dev
...
After this operation, 10.5 MB disk space will be freed.
Do you want to continue? [Y/n] y
dpkg: error processing package libglib2.0-dev (--remove):
 package is in a very bad inconsistent state; you should
 reinstall it before attempting a removal
Errors were encountered while processing:
 libglib2.0-dev
E: Sub-process /usr/bin/dpkg returned an error code (1)

libglib2.0-dev处于bad inconsistent state所以要reinstall，但是却无法卸载那么该怎么进行reinstall，google以及在其他社区找了很久也没找到答案，请问这是什么原因？

---

补充

$ sudo apt-get check
Reading package lists... Done
Building dependency tree       
Reading state information... Done
You might want to run 'apt-get -f install' to correct these.
The following packages have unmet dependencies:
 libglib2.0-dev : Depends: libglib2.0-0 (= 2.48.1-1~ubuntu16.04.1) but 2.48.2-0ubuntu1 is installed
                  Depends: libglib2.0-bin (= 2.48.1-1~ubuntu16.04.1)
E: Unmet dependencies. Try using -f.

---

解决方案

之前google的姿势不对，问题的关键是 package is in a very bad inconsistent state; you should reinstall it before attempting a removal。

参考资料强制卸载sudo dpkg --remove --force-remove-reinstreq libglib2.0-dev，但是又出现了新的问题，由于包不兼容python3，所以还要sudo ln -s /usr/bin/python2.7 /usr/bin/python，这样一来就只能使用python2.7，然后各种软件配置重新改。

比如youcompleteme要改成python3等等。

let g:ycm_server_python_interpreter = '/usr/bin/python3'
let g:ycm_python_binary_path = '/usr/bin/python3'

解决方案

libglib2.0-dev 依赖于 libglib2.48.1-1 和 libglib2.0-bin

但是你系统已经安装了libglib2.48.2-0 > 2.48.1-1 版本高了些

把 libglib2.48.2-0 卸载掉，使用sudo apt-get install package=version命令安装指定版本的libglib

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