An interesting idea. I see the licensing of agent binaries and upgrading
of agent binaries as a real problem that needs to be solved. I like the
idea of the brokers providing binary agent downloads for supported
platforms.

However, I'm less comfortable asking the broker to be responsible for
scripting the installation of this agent for every possible buildpack. I'd
feel better about keeping the agent configuration logic in the buildpack.
Simply having a script run at staging or startup that sets some environment
variables or something may be enough for some platforms but the integration
may be tighter and more involved for other platforms. I'm inclined to
think that how the agent is integrated into the buildpack should remain in
the buildpack.

Thoughts?

Mike