我正在尝试在我的 Windows 子系统 Linux（ubuntu 20）中安装 postgres。当我运行以下命令时，
sudo apt install libpq-dev
它显示以下错误。
Reading package lists... Done
Building dependency tree
Reading state information... Done
libpq-dev is already the newest version (12.4-0ubuntu0.20.04.1).
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
2 not fully installed or removed.
After this operation, 0 B of additional disk space will be used.
Do you want to continue? [Y/n] Y
Setting up mysql-server-8.0 (8.0.21-0ubuntu0.20.04.4) ...
invoke-rc.d: could not determine current runlevel
* Stopping MySQL database server mysqld [ OK ]
update-alternatives: error: alternative path /etc/mysql/mysql.cnf doesn't exist
dpkg: error processing package mysql-server-8.0 (--configure):
installed mysql-server-8.0 package post-installation script subprocess returned error exit status 2
No apport report written because the error message indicates its a followup error from a previous failure.
dpkg: dependency problems prevent configuration of mysql-server:
mysql-server depends on mysql-server-8.0; however:
Package mysql-server-8.0 is not configured yet.
dpkg: error processing package mysql-server (--configure):
dependency problems - leaving unconfigured
Errors were encountered while processing:
mysql-server-8.0
mysql-server
E: Sub-process /usr/bin/dpkg returned an error code (1)
问题出在哪里以及我该如何克服它。
谢谢