Being able to rebuild critical infrastructure from source, and know that you'll be able to reliably deploy it, is a _huge_ win for security.
In that case, you might be interested in bosh: http://bosh.io/docs/problems.html (the tool that enables the workflow jacques_chester was describing). It embraces the idea of reliably building from source for the exact reasons you've mentioned.
In that case, you might be interested in bosh: http://bosh.io/docs/problems.html (the tool that enables the workflow jacques_chester was describing). It embraces the idea of reliably building from source for the exact reasons you've mentioned.