Is it/Would it be possible to mark a

pipeline

as a "singleton"? I have a pipeline that is rather memory/resource intensive and I would like to prevent multiple instances of it being launched, and instead have it wait until the previous run has ended (or even error out if it has to be that way)

Hi Dennis- we have a run queuing feature coming out in the 0.10.0 release in a couple weeks that should allow you to do exactly this. You can label the pipeline with a tag and then specify a limit of the number of runs with that tag that can be running at once.

Wow, that's great!