What's the idiomatic way to configure a task by name if A) it already exists, or B) it's added later, but without crashing if it's not added at all? E.g., with plugins we have

pluginManager.withPlugin

. For tasks, I'm thinking

tasks.matching{ it.name == "sourcesJar" }.configureEach {...}

? Is this lazy enough?

Yes, or

tasks.named { it == "sourcesJar" }.configureEach { ... }

if you don't need to support Gradle version not yet having the

named { ... }

variant