我需要7z在wsl-ub1804上使用，所以我尝试安装它，sudo apt-get install p7zip-full但它失败了。我检查了ubuntu 包，所以我确定它在那里。
我检查了其他问题，并且我的宇宙回购已启用
如果需要，这是我的控制台日志。
什么是问题，我该如何解决？
longwsl@DESKTOP-3NGNNKU:~$ sudo apt-get install p7zip-full
Reading package lists... Done
Building dependency tree
Reading state information... Done
Package p7zip-full is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source
E: Package 'p7zip-full' has no installation candidate
longwsl@DESKTOP-3NGNNKU:~$ sudo add-apt-repository universe
'universe' distribution component is already enabled for all sources.
longwsl@DESKTOP-3NGNNKU:~$ sudo apt-get install p7zip-full
Reading package lists... Done
Building dependency tree
Reading state information... Done
Package p7zip-full is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source
E: Package 'p7zip-full' has no installation candidate
longwsl@DESKTOP-3NGNNKU:~$
尝试：
sudo apt-get update或sudo apt update在对源代码进行任何更改（例如添加 Universe 存储库）后，您必须更新 apt 的可用软件包数据库。