How do you deploy cron jobs to production?

Using Fabric, I prefer to keep a pristine version of my crontab locally, that way I know exactly what is on production and can easily edit entries in addition to adding them.

The fabric script I use looks something like this (some code redacted e.g. taking care of backups):

def deploy_crontab():
    put('crontab', '/tmp/crontab')
    sudo('crontab < /tmp/crontab')

I use Buildout to manage my Django projects. With Buildout, I use z3c.recipe.usercrontab to install cron jobs in deploy or update.