当我尝试安装php5-fpm时出现以下错误：
sudo apt-get install php5-fpm
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:
php5-fpm : Depends: libssl1.0.0 (>= 1.0.0) but it is not going to be installed
Depends: php5-common (= 5.4.39-0+deb7u2) but it is not going to be installed
Depends: ucf but it is not going to be installed
Depends: tzdata but it is not going to be installed
PreDepends: dpkg (>= 1.16.1~) but it is not going to be installed
E: Unable to correct problems, you have held broken packages.
我该如何解决这个问题？
我的/etc/apt/sources.list
deb http://ftp.at.debian.org/debian/ wheezy main
deb-src http://ftp.at.debian.org/debian/ wheezy main
deb http://security.debian.org/ wheezy/updates main
deb-src http://security.debian.org/ wheezy/updates main
# wheezy-updates, previously known as 'volatile'
deb http://ftp.at.debian.org/debian/ wheezy-updates main
deb-src http://ftp.at.debian.org/debian/ wheezy-updates main
deb http://http.us.debian.org/debian wheezy contrib non-free main
deb http://pkg.jenkins-ci.org/debian binary/
deb http://ftp.ie.debian.org/debian/ testing main
# Just added following https://www.linode.com/docs/websites/apache/running-fastcgi-php-fpm-on-debian-7-with-apache
deb http://ftp.es.debian.org/debian stable main contrib non-free
deb-src http://ftp.es.debian.org/debian stable main contrib non-free
deb http://ftp.debian.org/debian/ wheezy-updates main contrib non-free
deb-src http://ftp.debian.org/debian/ wheezy-updates main contrib non-free
deb http://security.debian.org/ wheezy/updates main contrib non-free
deb-src http://security.debian.org/ wheezy/updates main contrib non-free
~