This message was deleted.

Statically placing the file path works though

sourceSets {
        main {
            java {
                srcDirs("../components/build/generated/ap_generated_sources/release/out/")
                exclude("*.md", "*.json", "*.txt")
            }
        }
    }

This documents the proper way to publish files from one project and consume it in another: https://docs.gradle.org/current/userguide/cross_project_publications.html

How to get a configuration reference using typesafe project accessor?

Did you read the documentation I linked you to? Everything you need is described there.