在 Ubuntu 20.04.1（从 18.04.1 升级）上安装 libssl-dev 报告未满足的依赖项 1.1.1g-1+ubuntu18.04.1+deb.sury.org+1

Question

我已从 Ubuntu 18.04.1 升级到 Ubuntu 20.04.1（强制发布升级），然后在安装php.7-4时还需要 install libssl-dev，这提供了以下未满足的依赖项：

sudo apt install libssl-dev
The following packages have unmet dependencies:
 libssl-dev : Depends: libssl1.1 (= 1.1.1f-1ubuntu2) but 1.1.1g-1+ubuntu18.04.1+deb.sury.org+1 is to be installed

• 我已禁用存储库：ondrej和certbot. 其余的存储库是焦点窝的默认值 (20.04.1)

• 清理存储库，例如 ( apt update --fix-missing)

但还是有同样的问题。

Answer 1

问题在于需要降级的 libssl1.1 (= 1.1.1f-1ubuntu2) 的字母版本。这样做很简单，synaptic而不是apt install如下：

sudo aptitude install libssl-dev

he following NEW packages will be installed:
  libssl-dev{b} 
0 packages upgraded, 1 newly installed, 0 to remove and 0 not upgraded.
Need to get 1.582 kB of archives. After unpacking 8.005 kB will be used.
The following packages have unmet dependencies:
 libssl-dev : Depends: libssl1.1 (= 1.1.1f-1ubuntu2) but 1.1.1g-1+ubuntu18.04.1+deb.sury.org+1 is installed
The following actions will resolve these dependencies:

     Keep the following packages at their current version:
1)     libssl-dev [Not Installed]                         



Accept this solution? [Y/n/q/?] n
The following actions will resolve these dependencies:

     Downgrade the following packages:                                                   
1)     libssl1.1 [1.1.1g-1+ubuntu18.04.1+deb.sury.org+1 (now) -> 1.1.1f-1ubuntu2 (focal)]



Accept this solution? [Y/n/q/?] y
The following packages will be DOWNGRADED:
  libssl1.1 
The following NEW packages will be installed:
  libssl-dev 
0 packages upgraded, 1 newly installed, 1 downgraded, 0 to remove and 0 not upgraded.
Need to get 2.900 kB of archives. After unpacking 8.087 kB will be used.
Do you want to continue? [Y/n/?] Y

基本上不接受建议的解决方案并进行a包降级