无法安装mailutils Ubuntu 18.04

Question

似乎我无法在Ubuntu18.04中安装mailutils。这是一个依赖错误，我在其他地方也找不到这个问题。

命令：sudo apt install mailutils

输出：

The following packages have unmet dependencies:
 mailutils : Depends: guile-2.0-libs but it is not going to be installed
             Depends: libmailutils5 but it is not going to be installed
E: Unable to correct problems, you have held broken packages.

然后我运行了这个：sudo apt install guile-2.0-libs

输出：

The following packages have unmet dependencies:
 guile-2.0-libs : Depends: libgc1c2 (>= 1:7.2d) but it is not installable
                  Depends: libltdl7 (>= 2.4.6) but it is not installable
E: Unable to correct problems, you have held broken packages.

我试过安装libgc1c2 mannualy：sudo apt install libgc1c2

输出：

Reading state information... Done
Package libgc1c2 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 'libgc1c2' has no installation candidate

Answer 1

从guile-2.0-libs存储库中可用的缺少的依赖型main。mailutils及其依赖项libmailutils5可从universe中获得，请按以下方式编辑/etc/apt/sources.list：

deb http://us.archive.ubuntu.com/ubuntu/ bionic main restricted universe multiverse
deb http://us.archive.ubuntu.com/ubuntu/ bionic-security main restricted universe multiverse
deb http://us.archive.ubuntu.com/ubuntu/ bionic-updates main restricted universe multiverse
deb http://us.archive.ubuntu.com/ubuntu/ bionic-proposed main restricted universe multiverse

然后跑：

sudo apt update
sudo apt install mailutils