gnome-tweak-tool と gnome-shell-common をインストールすると、依存関係エラーが発生します。

ここで確認した後、鉱山にpop!_os 18.04最小化と最大化ボタンはありません。協会、インストールを試みたgnome-tweak-tool後に一連の依存関係エラーが発生しました。

x@pop-os:~$ sudo apt install gnome-tweak-tool
[sudo] x password:
Reading list of packages... done
Analyzing the dependency tree of the package
Reading status information... done
There are some packages that cannot be installed. If you are using an unstable distribution, this might be
Because the system is unable to reach the state you requested. There may be some software you need in this release.
The packages have not been created or they have been moved out of the Incoming directory.
The following information may be helpful in resolving the issue:

The following packages have unmet dependencies:
  Gnome-tweak-tool : Dependency: gnome-shell-common (>= 3.4) But it won't be installed
E: I can't fix the error because you want some packages to stay current, that is, they break the dependencies between the packages.

ところでインストールしようとするとgnome-shell-common最新バージョンがインストールされたと出てきますね。解決策ご存知ですか？ありがとうございます。

x@pop-os:~$ sudo apt install gnome-shell-common
Reading list of packages... done
Analyzing the dependency tree of the package
Reading status information... done
Gnome-shell-common is the latest version (3.28.4-0ubuntu18.04.2).
Gnome-shell-common has been set up for manual installation.
0 packages have been upgraded, 0 packages have been newly installed, 0 packages have been uninstalled, and 22 packages have not been upgraded.