Gradle add nested subproject from a multi-module project as dependency of another subproject

Question

I have a complex, but interesting situation. This is a tree diagram of my folder structure:

root
|___ settings.gradle
|___ p1
|___ p2  // depends on p3/sp1
|___ p3
|____|___sp1
|____|___sp2

I hope that explains the situation.

Now how would I add sp1 as a dependency of p2?

So far in my root setting.gradle, I have

rootProject.name = root
include 'p1'
include 'p2'
include 'p3'

In p2 build.gradle, I have:

dependencies {
    compile project (':p3:sp1')
}

But doing this still does not resolve the dependencies in p2; I still get errors about missing definition.

How do I fix this?

Just an aside, how would I resolve other dependencies sp1 might have. Like if it depends on sp2, do I need to declare this somehow even though it is already resolved within p3?

Answer 1

Assuming project sp1 and sp2 are subprojects of project p3, if you want to do:

dependencies {
    compile project(':p3:sp1')
}

Then you need to change your settings.gradle to:

rootProject.name = root

include ':p1'
include ':p2'
include ':p3'    // Keep this if this folder contains a build.gradle
include ':p3:sp1'
include ':p3:sp2'

Answer 2

Just to add the answer for those who might be looking, in your settings.gradle you will have

include ':p1',':p2',':p3:sp1',':p3:sp2'

if sp1 depends on sp2

then add dependency on sp1's gradle as

dependency {
   compile project(":p3:sp2")
}