How to make plugin dependent on gradle task

Plugin may have an option to skip dependency registration (make pull request with fix if not!).

And then you can add dependencies as usual:

test.dependsOn(generateCucumberReports)

or

generateCucumberReports.mustRunAfter(test)

If you can’t change plugin source code try onlyIf

https://docs.gradle.org/current/dsl/org.gradle.api.Task.html