ext.bintrayUsername = project.hasProperty('bintrayUsername') ? project.getProperty('bintrayUsername') : System.getenv('BINTRAY_USER') ?: '' ext.bintrayKey = project.hasProperty('bintrayKey') ? project.getProperty('bintrayKey') : System.getenv('BINTRAY_KEY') ?: '' ext.signingPassword = project.hasProperty('signingPassword') ? project.getProperty('signingPassword') : System.getenv('SIGNING_PASSWORD') ?: '' ext.sonatypeUserName = project.hasProperty('sonatypeUserName') ? project.getProperty('sonatypeUserName') : System.getenv('SONATYPE_USER_NAME') ?: '' ext.sonatypePassword = project.hasProperty('sonatypePassword') ? project.getProperty('sonatypePassword') : System.getenv('SONATYPE_PASSWORD') ?: ''