Depend on a Project which has it's own dependences (Gradle)

In Android Studio using Gradle I have ProjectA which relies on ProjectB but Project B relies on Project C and Project D like so...

Project A .. Project B .. Project C .. Project D

Using the current Gradle scripts I get the following error

Error:(22, 0) Project with path ':ProjectC:app' could not be found in project ':ProjectB:app'.

Folder Structure

    \ProjectB (same as A)
    \ProjectC (same as A)
    \ProjectD (same as A)`

Project A settings.gradle

include ':app', ':ProjectB:app'
project (':ProjectB:app').projectDir = new File(settingsDir, '../ProjectB/app')

Project A Project build.gradle

buildscript {
    repositories {
dependencies {
    classpath ''

        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
allprojects {
    repositories {

Project A Module build.gradle

android {
    compileSdkVersion 19
    buildToolsVersion "21.1.2"

    defaultConfig {
        applicationId "com.example.movetogradle"
        minSdkVersion 15
        targetSdkVersion 19
        versionCode 1
        versionName "1.0"
    buildTypes {
        release {
        minifyEnabled false
        proguardFiles getDefaultProguardFile('proguard-android.txt'), ''

dependencies {
    compile ''
    compile project(path: ':ProjectB:app')        

Project B knows it's dependancies C and D using the same method above.

I'm new to the whole gradle scene. Obviously in Eclipse (ANT) you would just say ProjectB is a library. We would like to keep them as seperate projects and not modules because when code changes in ProjectB, it gets used by all projects using B.

I can get ProjectA to build if I add references to ProjectC and ProjectD like I have with ProjectB.

How could I get ProjectA to depend on ProjectB without having to declare all of ProjectBs dependencies in ProjectA?


When another project is included in a Gradle multi-project build, I'm pretty sure that the settings.gradle file is not read for that project. (see the Gradle documentation, chapter 56.2) In a multi-project build, you are expected to at least include all of the required projects in your root settings.gradle file, so in this case, ProjectA's settings.gradle I believe needs to include projects C and D in order for the build to work. A doesn't need to declare any more dependencies, but Gradle needs to be made aware of the projects in order to build them.

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