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.
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- a$ }8 P; T9 X2 q. F" W安装aptitude ，各种问题，具体错误信息如下：

pi@raspberrypi:~ $ sudo apt-get install aptitude
Reading package lists... Done
0 D/ [" g$ I2 }% L: p2 s5 b/ d3 EBuilding dependency tree      
3 P' z/ e, x: l+ B/ z) t' |; TReading state information... Done
Some packages could not be installed. This may mean that you have
1 R" t8 @! i% h* m4 c1 }. crequested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
9 Z# }) r5 @* c9 qThe following information may help to resolve the situation:
. i4 x9 y" B7 H  w4 a6 K5 Q7 C: ]
4 l1 G( a% B$ b# u# G$ ]; ]) Y* NThe following packages have unmet dependencies:
aptitude : Depends: libapt-pkg5.0 (>= 1.1) but it is not going to be installed
4 T2 Z4 W! w7 E0 `7 O            Recommends: libparse-debianchangelog-perl but it is not going to be installed
7 B) v2 q+ y5 Q% |E: 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。
+ h) y* B  E: P2、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。