Gradle (android experimental plugin) ignores a project dependency

Question

I'm using Gradle Android Experimental plugin in the following project structure:

Root Project
|-- app
|-- my-library

settings.gradle

include ':my-library', ':app'

build.gradle

buildscript {
    repositories {
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle-experimental:0.2.0'
    }
}

allprojects {
    repositories {
        jcenter()
    }
}

app/build.gradle

apply plugin: 'com.android.model.application'

model {
    android {
        compileSdkVersion = 23
        buildToolsVersion = "23.0.0"

        defaultConfig.with {
            applicationId = "a.bundle.id"
            minSdkVersion.apiLevel = 15
            targetSdkVersion.apiLevel = 23
            versionCode = 1
            versionName = "1.0"
        }
    }

    android.buildTypes {
        release {
            minifyEnabled = false
            proguardFiles += file('proguard-rules.pro')
        }
    }
}

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    compile 'com.android.support:appcompat-v7:23.0.0'
    compile project(':my-library')
}

my-library/build.gradle

apply plugin: 'com.android.model.library'

model {
    android {
        compileSdkVersion = 'android-23'
        buildToolsVersion = '23.0.1'

        defaultConfig.with {
            minSdkVersion.apiLevel = 15
        }
    }

    android.buildTypes {
        release {
            minifyEnabled = false
            proguardFiles += file('proguard-rules.txt')
        }
    }

    android.ndk {
        moduleName = "xxx"
        CFlags += "-I" + "${project.buildDir}".toString() + "/../src/main/jni/libabecs/include"
        CFlags += "-std=gnu99"
    }
    android.sources {
        main {
            jni {
                source {
                    srcDir 'src/main/jni/libxxx/src'
                }
            }
        }
    }
    android.productFlavors {
        create("arm") {
            ndk.abiFilters += "armeabi"
        }
        create("arm7") {
            ndk.abiFilters += "armeabi-v7a"
        }
        create("arm8") {
            ndk.abiFilters += "arm64-v8a"
        }
        create("x86") {
            ndk.abiFilters += "x86"
        }
        create("x86-64") {
            ndk.abiFilters += "x86_64"
        }
        create("mips") {
            ndk.abiFilters += "mips"
        }
        create("mips-64") {
            ndk.abiFilters += "mips64"
        }

        create("all")
    }
}

The library project builds perfectly fine. In Android Studio, it doesn't show any error. However, when attempting to build this project with Gradle, it'll only attempt to build the app project and will practically ignore the my-library dependency, rendering class not found errors.

How to solve this?

Answer 1

Apparently it's a bug/feature not implemented in the build plugin.

I only found a dirty workaround to link the generated aar directly.

build.gradle (someappname)

repositories {
    flatDir {
        dirs '../my-library/build/outputs/aar'
    }
}

dependencies {
    compile project(':my-library')
    compile(name:'my-library-{flavour}', ext:'aar')
    //the rest
}