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I used something like `if (tasks.names.contain("bar")) tasks.named("foo") { shouldRunAfter("bar") }` but it will work only if task `bar` is at least registered by that time.

Of course, you could try to do it in `afterEvaluate` callback and hope target plugin doesn't register/create task in `afterEvaluate` block itself

currently resorting to afterEvaluate + `if (!pluginManager.hasPlugin(...)) tasks.register('bar')` (that is, if the optional plugin is not registered by then, register an "empty" task in its place)

```tasks.matching { it.name == "bar" }.configureEach(fooTask::shouldRunAfter)
```
is terrible in that it makes all tasks eagerly configured just to find out their name, but it would work even if the task is registered in `afterEvaluate`.

oh actually, could
```tasks.addRule("foo") { name -&gt;
    barTask.shouldRunAfter(name)
}
```
work?

I completely forgot about rules! that might work

this works!
```project.tasks.addRule("Foo stub") { taskName -&gt;
  if (taskName == "foo1" || taskName == "foo2") {
    project.task(taskName)
  }
}```
thanks <@U019L3NM4PK> for the idea