The LOGBack Classic Bundle has no Import-Package for ch.qos.logback.core.rolling (and rolling.helper), resulting in a ClassNotFoundException when using e.g. the RollingFileAppender from the Core-Bundle. The ClassNotFoundException will be raised because the Bundle which initializes the LoggerContext (Classic) can not load the Appender from the Core-Bundle. The Bnd-Tool by Peter Kriens and the Maven-Felix-Plugin only detects package dependencies that are imported in java classes. Runtime dependencies like Appenders must be explicitly configured in the bnd-file or pom.

This issue is identically to the one I reported for the SpringSource-Bundle-Repository, see https://issuetracker.springsource.com/browse/BRITS-165.