我有带有 Debian Wheezy 的 virtualbox。我正在尝试在其上安装 Postgresql 9.2。当我尝试这样做时这我有下一个指令：
Reading package lists... Done
Building dependency tree
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:
The following packages have unmet dependencies:
postgresql-9.2 : Depends: postgresql-common (>= 135~) but it is not going to be installed
Depends: ssl-cert but it is not installable
E: Unable to correct problems, you have held broken packages.
当我尝试安装 postgresql-common 时：
apt-get install postgresql-common
我得到了下一个：
Reading package lists... Done
Building dependency tree
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:
The following packages have unmet dependencies:
postgresql-common : Depends: ssl-cert (>= 1.0.11) but it is not installable
E: Unable to correct problems, you have held broken packages
当我尝试安装 ssl-cert 时：
apt-get install ssl-cert
我得到了下一个：
Reading package lists... Done
Building dependency tree
Reading state information... Done
Package ssl-cert 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 'ssl-cert' has no installation candidate
我是Linux新手，请帮我安装Postgresql 9.2
有我的sources.list
#
# deb cdrom:[Debian GNU/Linux 7.0.0 _Wheezy_ - Official i386 CD Binary-1 201305$
deb cdrom:[Debian GNU/Linux 7.0.0 _Wheezy_ - Official i386 CD Binary-1 20130504$
deb http://security.debian.org/ wheezy/updates main
deb-src http://security.debian.org/ wheezy/updates main
# wheezy-updates, previously known as 'volatile'
# A network mirror was not selected during install. The following entries
# are provided as examples, but you should amend them as appropriate
# for your mirror of choice.
#
# deb http://ftp.debian.org/debian/ wheezy-updates main
# deb-src http://ftp.debian.org/debian/ wheezy-updates main
答案1
将其添加到您的sources.list：
deb http://ftp.de.debian.org/debian/ wheezy main non-free contrib
deb-src http://ftp.de.debian.org/debian/ wheezy main non-free contrib
确保使用适合您所在位置的镜子。
运行aptitude update或apt-get update并完成安装。
的交互方式aptitude对于解决依赖关系还是蛮有用的。