snapd 缺少 SELinux 依赖项

Question

按照说明这里 (computingforgeeks.com)在 CentOS 8 上安装 snap，运行时我遇到以下问题sudo dnf -y install snapd：

Error: 
 Problem: package snapd-2.42.1-1.el8.x86_64 requires snapd-selinux = 2.42.1-1.el8, but none of the providers can be installed
  - conflicting requests
  - nothing provides selinux-policy-base >= 3.14.3-20.el8 needed by snapd-selinux-2.42.1-1.el8.noarch
(try to add '--skip-broken' to skip uninstallable packages or '--nobest' to use not only best candidate packages)

有人知道解决这个问题的简单方法吗？由于类似的原因，所需的依赖项似乎也无法安装。