包裹不断被扣留

Question

似乎最近当我去更新我的 Ubuntu 22.04 机器时，我经常看到软件包似乎无缘无故地被阻止。这是最新的：

Earth:sudo apt upgrade
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
Calculating upgrade... Done
The following packages have been kept back:
  gnome-control-center gnome-control-center-data gnome-control-center-faces
  libapache2-mod-php8.1 php8.1 php8.1-cgi php8.1-cli php8.1-common
  php8.1-mysql php8.1-opcache php8.1-readline
0 upgraded, 0 newly installed, 0 to remove and 11 not upgraded.
Earth:

如果我 apt 升级并指定软件包，安装就不会出现问题。但为什么所有这些都阻碍了呢？

Answer 1

它们称为分阶段更新。“APT 现在实现了阶段性更新。以前，只有 update-manager 实现了阶段性更新，而且这只在桌面上使用——APT 中的实现意味着它也适用于服务器、树莓派和容器。这意味着某些更新将一些机器在分阶段实施时会受到限制。” https://discourse.ubuntu.com/t/phased-updates-in-apt-in-21-04/20345