juju/juju — pull request #1221 by howbazaar (2014-11-25 22:42:22+00:00)
Title: Implement feature flags for Juju

Proposal for a feature flag implementation in Juju.

Flags are specified in the environment. Once an environment is bootstrapped with a particular feature flag set, it cannot be changed. All agents started in that environment will have the same feature flag set.

NOTE: windows isn't done yet as I haven't figured out how.