What annotation should i use in my CustomTask if i want receive as input other task's output?

register("custom", CustomTask::class.java) {
        dependsOn(":tools:mytool:jar")
        input(project(":tools:mytool").tasks.named("jar"))

Didn't found answers by reading Copy task and it's parents source code.

from

is not annotated, how does it resolve input into real file?

@InputFiles

with additional normalization But you also should never reach into other projects' models like you do in that snippet. If you need the jar of that other project, create a dependencyScope configuration, declare the dependency on that project on it, create a resolvable extension that extends from it, use that configuration as input for your task. Also, you should never need any explicit

dependsOn

except with a life-cycle task on the left-hand side. All other explicit

dependsOn

are a code smell and if needed just are a hint that you do not properly wire task outputs to task inputs which would bring the necessary task dependency automatically when needed.

Any example of InputFiles normalization? Is it

Project.getNormalization()

? What is

dependencyScope configuration

? I don't use a java plugin in this project

No, for example

@Classpath

or

@CompileClasspath

or

@PathSensitivity(...)

depending on how those files are used and which sensitivity / normalization is necessary.

I read docs and it's example + gradle-recipes, did i miss some doc that describes this? I thought input/output relations is ground thing in gradle for task tree... Could you point to some simple example? Also could you describe bit Copy Task architecture? I guess using it with getting file from other project would require additional dependency declaration also?

did i miss some doc that describes this?

What exactly?

I thought input/output relations is ground thing in gradle for task tree... Could you point to some simple example?

Yes, what makes you think otherwise?

Also could you describe bit Copy Task architecture? I guess using it with getting file from other project would require additional dependency declaration also?

Yes, if you need things from other projects, you need to use dependencies. If it is the actual artifact it produces, everything is set up already and you can just depend. If you need to share something else from one project to the other, the according docs are https://docs.gradle.org/current/userguide/cross_project_publications.html