安装aptitude报错：Unable to correct problems, you have held broken packages

Touuqu

树莓派更换清华源，安装aptitude报错：Unable to correct problems, you have held broken packages.

安装aptitude ，各种问题，具体错误信息如下：

+ E# @( U2 t& ?pi@raspberrypi:~ $ sudo apt-get install aptitude
4 O$ R7 o/ b5 t/ l5 b* H# F, DReading package lists... Done
Building dependency tree      
, ]* Z& e7 }" ?: p. BReading state information... Done
: p& p7 l' q! H0 F8 \0 JSome packages could not be installed. This may mean that you have
" N7 H2 D: _- Wrequested an impossible situation or if you are using the unstable
* j- g9 Y* T1 x6 b7 p2 w9 vdistribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:
# N# k7 w( Q0 z7 m8 ]
4 z0 l, K% M" V' G. d3 \The following packages have unmet dependencies:
( k2 d* d9 E/ L# L aptitude : Depends: libapt-pkg5.0 (>= 1.1) but it is not going to be installed
$ T8 X! V( v2 ~9 v8 v            Recommends: libparse-debianchangelog-perl but it is not going to be installed
9 C3 \2 E+ @: A) \% FE: Unable to correct problems, you have held broken packages.

regngfpcb

想知道答案，感觉这个好难的

Touuqu

1、经过查找，发现原因为树莓派 Linux 系统版本为 buster ，但是使用的镜像源版本却为 stretch ，后来将树莓派使用的镜像源修改为与系统版本一致的源即可。
2、修改完镜像源后，不要忘了使用命令：sudo apt-get update，sudo apt-get upgrade。
3、更新完毕后，即可再次安装想要的软件；这里推荐使用：aptitude 安装所需软件，此工具可以有效地解决软件依赖包等问题。