Android Gradle library dependency with library dependency using Nexus

Question

I'm switching my project over to using Gradle and an internal SonaType Nexus for hosting my dependencies. My core project depends on library project A and library project A has a dependency on library project B.

My issue is that as soon as I add LibA to my main project I get this error: "Module version com.example:LibA:1.1 depends on libraries but is not a library itself"

I have no issues adding library projects with jar dependencies with the same build script. I have seen people doing this successfully with LOCAL (in the project) android libraries but no one doing it with maven repos.

Is this a bug in gradle or did I misconfigure the library builds?

Core Project Build

buildscript {     repositories {         mavenCentral()     }     dependencies {         classpath 'com.android.tools.build:gradle:0.6.+'     } } apply plugin: 'android'  repositories {     maven {         url "http://localhost:8081/nexus/content/repositories/releases/"     }      maven {         url "http://localhost:8081/nexus/content/repositories/central/"     } }  android {     compileSdkVersion 19     buildToolsVersion "19.0.0"      defaultConfig {         minSdkVersion 14         targetSdkVersion 19     } }  dependencies {     compile 'com.android.support:support-v4:+'     compile('com.example:LibA:1.+') } 

LibA Build

buildscript {     repositories {         mavenCentral()     }      dependencies {         classpath 'com.android.tools.build:gradle:0.6.+'     } }  apply plugin: 'android-library'  android {     compileSdkVersion 19     buildToolsVersion "19.0.0"      defaultConfig {         minSdkVersion 9         targetSdkVersion 17          versionCode = "3"         versionName = "1.2"     }      android {         sourceSets {             main {                 manifest.srcFile 'AndroidManifest.xml'                 java.srcDirs = ['src']                 resources.srcDirs = ['src']                 aild.srcDirs = ['src']                 renderscript.srcDirs = ['src']                 res.srcDirs = ['res']                 assets.srcDirs = ['assets']             }          }     }      repositories {         mavenCentral()     }      dependencies {         compile ('com.example:LibB:1.+')     } ... 

LibB Build

buildscript {     repositories {         mavenCentral()     }      dependencies {         classpath 'com.android.tools.build:gradle:0.6.+'     } }  apply plugin: 'android-library'  android {     compileSdkVersion 19     buildToolsVersion "19.0.0"      defaultConfig {         minSdkVersion 9         targetSdkVersion 17          versionCode = "1"         versionName = "1.0"     }      android {         sourceSets {             main {                 manifest.srcFile 'AndroidManifest.xml'                 java.srcDirs = ['src']                 resources.srcDirs = ['src']                 aild.srcDirs = ['src']                 renderscript.srcDirs = ['src']                 res.srcDirs = ['res']                 assets.srcDirs = ['assets']             }          }     }      repositories {         mavenCentral()     }      dependencies {     } ... 

Edit: Adding -info output for the error.

* What went wrong: A problem occurred configuring project ':GradleTest'. > Failed to notify project evaluation listener.    > Module version com.example:LibA:1.+ depends on libraries but is not a library itself 

Edit 2: Adding my local maven upload script for LibA

apply plugin: 'maven' apply plugin: 'signing'  group = "com.example" version = defaultConfig.versionName  configurations {     archives {         extendsFrom configurations.default     } }  signing {     required { has("release") && gradle.taskGraph.hasTask("uploadArchives") }     sign configurations.archives }   uploadArchives {     configuration = configurations.archives     repositories.mavenDeployer {         beforeDeployment { MavenDeployment deployment -> signing.signPom(deployment) }         repository(url: sonatypeRepo) {             authentication(userName: sonatypeUsername,                     password: sonatypePassword)         }          pom.project {             name 'com-example'             packaging 'aar'             description 'none'             url 'https://internal github link'              scm {                 url 'scm:git@https://internal github link'                 connection 'git@https://internal github link'                 developerConnection 'git@https://internal github link'             }              licenses {                 license {                     name 'example'                     url 'example'                     distribution 'example'                 }             }              developers {                 developer {                     id 'example'                     name 'example'                     email 'example'                 }             }              groupId "com.example"             artifactId rootProject.name //LibA             version defaultConfig.versionName         }     } } 

Answer 1

Your line in the dependencies to include LibA is wrong. To include a library project, use this:

compile project(':LibA') 

If the library's directory isn't at the root of your project directory, you'll need to specify a colon-delimited path. For example, if your directory structure is:

 projectFolder   |   +--coreProject   |   +--libraries       |       +--LibA       |       +--LibB 

your dependency will be:

compile project(':libraries:LibA') 

This is the same as the notation you use in your settings.gradle file.

Answer 2

Maybe problem is that you use mavenCentral as your repository for library projects

repositories {     mavenCentral() } 

and not yours nexus repository where actual dependencies exists

repositories {     maven {         url "http://localhost:8081/nexus/content/repositories/releases/" }      maven {         url "http://localhost:8081/nexus/content/repositories/central/"     } }