问题
I'm trying to install nginx-full on my 12.04 machine(upgraded from 11.04) getting this error with apt-get--
The following packages have unmet dependencies:
nginx-full : Depends: passenger-common (>= 1:3.0.17) but it is not going to be installed
Depends: passenger-common (< 1:3.0.18) but it is not going to be installed
E: Unable to correct problems, you have held broken packages.
with aptitude getting this
The following packages have unmet dependencies:
nginx-light : Conflicts: nginx-full but 1:1.2.3-1~38~natty1 is to be installed.
nginx-full : Conflicts: nginx-light but 1:1.2.3-1~38~natty1 is installed.
passenger-common : Depends: libev3 (>= 3.0) which is a virtual package.
Depends: ruby-rack but it is not going to be installed.
Depends: passenger-common1.8 (= 1:3.0.17+120~natty1) but it is not going to be installed. or
passenger-common1.9.1 (= 1:3.0.17+120~natty1) but it is not going to be installed.
When I try to install passenger-common it depends on libev3 which is not available.
How can I solve this problem.
Output of dpkg --get-selections | grep hold this is empty.
回答1:
It looks like you have a messed up package database. First uninstall all packages that begin with nginx and passenger, then try again.
来源：https://stackoverflow.com/questions/24928407/how-to-install-nginx-full