I'd say the way to do this would be to have a top level-only option called something like parallelAlwaysFailsFast, and if it's set and there isn't an explicit failFast setting on a parallel block, we would make every parallel within the pipeline fail fast.
We would like to have a top-level option ??failFast true?? for all parallel stages inside a single Jenkinsfile. {code} pipeline { agent any stages options { failFast true // Could we have a top-level failFast option? parallelsAlwaysFailFast() } stages {