How to forward reference tasks for configuration?

Thank you for the help!

The only potential concern is that this code will run before the configuration added when the task is registered

I guess it depends what one wants to configure. I was only looking to add dependsOn and mustRunAfters so whenTaskAdded/withType would work, but I’ve had problems in the past when I needed to alter task configuration state after the initial configuration has been done.

Otherwise it became convoluted quick, but it works now mostly after about 10 iterations of tries:

println("configuring build")

println("registering bar")
tasks.register("bar") {
	println("configuring bar")
}

configureTaskForSureAfterInitialConfiguration(project, "bar", DefaultTask) {
	println("configuring bar after register")
}
configureTaskForSureAfterInitialConfiguration(project, "foo", DefaultTask) {
	println("configuring foo before register")
}
afterEvaluate {
	configureTaskForSureAfterInitialConfiguration(project, "foo", DefaultTask) {
		println("configuring foo in afterEvaluate before register")
	}
	configureTaskForSureAfterInitialConfiguration(project, "bar", DefaultTask) {
		println("configuring bar in afterEvaluate after register")
	}
}
afterEvaluate {
	println("registering foo")
	tasks.register("foo") {
		println("configuring foo")
	}
}
afterEvaluate {
	configureTaskForSureAfterInitialConfiguration(project, "foo", DefaultTask) {
		println("configuring foo in afterEvaluate after register")
	}
}

static void configureTaskForSureAfterInitialConfiguration(
	Project project, String name, Class taskType, Action<? super Project> configure
) {
	project.tasks.withType(taskType) {
		if (it.name == name) {
			project.afterEvaluate {
				project.tasks.named(name).configure(configure)
			}
		}
	}
}
tasks.register("dummy")

> Configure project :
configuring build
registering bar
configuring bar
configuring bar after register
registering foo
configuring foo
configuring bar in afterEvaluate after register
configuring foo before register
configuring foo in afterEvaluate before register
configuring foo in afterEvaluate after register

This works everywhere by running after the initial configuration. Even if it is called after register which doesn’t work with whenTaskAdded/withType (this part wasn’t in OP). configureTaskForSureAfterInitialConfiguration seems to be a good way of making sure the task is configured correctly, even if the implementation detail of when the task created is changed inside the plugin declaring foo.

Now, there’s only one interesting issue, foo and bar get configured even when I’m not executing them: gradle dummy I thought that using register/named would result in lazy configuration.