Because central use Require-Bundle instead of Import-Package to depend on slf4j.api, this project cannot use the rhel implementation (rh-common-java rpm) version of slf4j.api 1.7.4 .jar when installed via rpm on rhel/fedora.

Here's the line that is causing the problem:

https://github.com/jbosstools/jbosstools-central/blob/fc4bfc7aea223c95b71f9e7634f4cb17d1af1461/maven/plugins/org.jboss.tools.maven.gwt/META-INF/MANIFEST.MF#L13

We need to switch to using Import-Package to that any implementation of this package, regardless of Bundle-SymbolicName, can be used.

More info in JBDS-4136

See also:

http://stackoverflow.com/questions/13959891/why-do-we-need-imported-packages-when-we-have-required-plug-ins-in-eclipse-p
http://stackoverflow.com/questions/1865819/when-should-i-use-import-package-and-when-should-i-use-require-bundle