Installing packages from a third-party repository
Most often you will want to install packages from the main distribution repo, so a simple package resource will do:
package { 'exim4': ensure => installed }
Sometimes, you need a package that is only found in a third-party repository (an Ubuntu PPA, for example), or it might be that you need a more recent version of a package than that provided by the distribution, which is available from a third party.
On a manually-administered machine, you would normally do this by adding the repo source configuration to /etc/apt/sources.list.d
(and, if necessary, a gpg key for the repo) before installing the package. We can automate this process easily with Puppet.
How to do it…
In this example, we'll use the popular ...
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