Buildbot proposal: add custom build properties for order and priority

[Ryan Schmidt]

On Mar 11, 2018, at 06:01, Ryan Schmidt wrote:

> We currently build ports in a somewhat random order (see https://trac.macports.org/ticket/52766). By default, the next build that buildbot starts is the one that was scheduled first. But if multiple builds happened to get scheduled at the same exact time, the order in which they will build is undefined.
> 
> We can fix this by adding a custom "order" property to each build, and modifying our nextBuild function (mentioned in my previous email) so that it looks not only at the scheduled timestamp but also the order property to decide which build to pick.

Thank you very much, Mojca, for fixing this!

The property got called "priority" and right now the nextBuild function only looks at that, not the timestamp. This is fine, so long as portwatcher waits for all portbuilders to finish, as it currently does.


> I don't know whether we currently compute the *correct* order (dependencies should build first) but if not that can be tackled later. A predictable incorrect order is better than a random incorrect order.

Thank you very much, Josh, for fixing this!


> I'd also like to be able to assign priorities to builds. Low, Medium, High would be enough. We could add a custom "priority" property to each build for this.

This is still open.