Sample group of dependencies : i.e librarires.dagger

dependencies.gradle

allprojects {
    repositories {
        jcenter()
    }
}

ext {
    //Android
    androidBuildToolsVersion = "26.0.1"
    androidMinSdkVersion = 15
    androidTargetSdkVersion = 25
    androidCompileSdkVersion = 25

    //Libraries
    daggerVersion = '2.9'
    butterKnifeVersion = '8.7.0'
    butterKnifeCompiler = '8.7.0'
    recyclerViewVersion = '23.4.0'
    rxJavaVersion = '1.1.6'
    rxAndroidVersion = '2.0.1'
    javaxAnnotationVersion = '1.0'
    gsonVersion = '2.7'
    okHttpVersion = '3.3.1'
    androidAnnotationsVersion = '23.1.1'
    retrofitVersion = '2.3.0'
    retrofitJsonConverterVersion = '2.3.0'
    retrofitRxjavaVersion = '2.3.0'
    caligraphyVersion = '2.1.0'
    materialDialogVersion = '0.8.5.3'
    timberVersion = '4.1.2'

    //Google
    supportLibraryVersion = '23.2.1'
    playServiceVersion = "8.3.0"

    //Testing
    jUnitVersion = '4.12'
    assertJVersion = '1.7.1'
    mockitoVersion = '1.10.19'
    dexmakerVersion = '1.4'
    robolectricVersion = '3.0'
    testingSupportLibVersion = '0.1'
    testRunnerVersion = '0.4'
    hamcrestVersion = '1.1'

    presentationDependencies = [
            supportLibrary       : "com.android.support:appcompat-v7:${supportLibraryVersion}",
            supportAnnotations   : "com.android.support:support-annotations:${androidAnnotationsVersion}",
            playService          : "com.google.android.gms:play-services-vision:${playServiceVersion}",

            daggerCompiler       : "com.google.dagger:dagger-compiler:${daggerVersion}",
            dagger               : "com.google.dagger:dagger:${daggerVersion}",

            butterKnife          : "com.jakewharton:butterknife:${butterKnifeVersion}",
            butterKnifeCompiler  : "com.jakewharton:butterknife-compiler:${butterKnifeCompiler}",

            recyclerView         : "com.android.support:recyclerview-v7:${recyclerViewVersion}",
            gson                 : "com.google.code.gson:gson:${gsonVersion}",

            rxJava               : "io.reactivex:rxjava:${rxJavaVersion}",
            rxAndroid            : "io.reactivex.rxjava2:rxandroid:${rxAndroidVersion}",
            javaxAnnotation      : "javax.annotation:jsr250-api:${javaxAnnotationVersion}",

            retrofit             : "com.squareup.retrofit2:retrofit:${retrofitVersion}",
            retrofitJsonConverter: "com.squareup.retrofit2:converter-gson:${retrofitJsonConverterVersion}",
            retrofitRxjava       : "com.squareup.retrofit2:adapter-rxjava:${retrofitRxjavaVersion}",

            okHttp               : "com.squareup.okhttp3:okhttp:${okHttpVersion}",
            okHttpInterceptor    : "com.squareup.okhttp3:logging-interceptor:${okHttpVersion}",

            timber               : "com.jakewharton.timber:timber:${timberVersion}",
            caligraphy           : "uk.co.chrisjenx:calligraphy:${caligraphyVersion}",
            materialDialog       : "com.github.afollestad.material-dialogs:core:${materialDialogVersion}"
    ]

    presentationTestDependencies = [
            junit              : "junit:junit:${jUnitVersion}",
            assertj            : "org.assertj:assertj-core:${assertJVersion}",
            mockito            : "org.mockito:mockito-core:${mockitoVersion}",
            powermockJunit     : "org.powermock:powermock-module-junit4:1.6.5",
            powermockMockito   : "org.powermock:powermock-api-mockito:1.6.6",
            robolectric        : "org.robolectric:robolectric:${robolectricVersion}",

            rxJava             : "io.reactivex:rxjava:${rxJavaVersion}",
            testingSupportLib  : "com.android.support.test:testing-support-lib:${testingSupportLibVersion}",

            dexmaker           : "com.google.dexmaker:dexmaker:${dexmakerVersion}",
            dexmakerMockito    : "com.google.dexmaker:dexmaker-mockito:${dexmakerVersion}",

            hamcrestCore       : "org.hamcrest:hamcrest-core:${hamcrestVersion}",
            hamcrestLibrary    : "org.hamcrest:hamcrest-library:${hamcrestVersion}",
            hamcrestIntegration: "org.hamcrest:hamcrest-integration:${hamcrestVersion}"
    ]

    libraries = [
            dagger: [ // Groovy list literal
                      dependencies.create("com.google.dagger:dagger-compiler:${daggerVersion}") {
                          exclude(group: 'javax.inject', module: 'javax.inject')
                      },
                      "com.google.dagger:dagger:${daggerVersion}",
                      "javax.annotation:jsr250-api:${javaxAnnotationVersion}"
            ]
    ]
}