The existing osgi example doesn't do much. It generates a .tar.gz file which isn't valid on a Windows machine. It does not produce an OSGi bundle or show proper usage.

I created a new sample. It creates a Hello World Activator, implemented in Groovy, and then shows how to correctly generate a Import-Package and Export-Package off of the data.

Patch is attached.

Bundle is valid on at least Eclipse Equinox.

For reference, the MANIFEST.MF produced is:

Manifest-Version: 1.0
Ant-Version: Apache Ant 1.7.0
Created-By: 1.6.0_04 (Sun Microsystems Inc.)
Export-Package: org.gradle;uses:="groovy.lang,org.codehaus.groovy.refl
ection,org.codehaus.groovy.runtime,org.osgi.framework,org.codehaus.gr
oovy.runtime.callsite";version="1.0"
Bundle-Version: 1.0
Tool: Bnd-0.0.255
Bnd-LastModified: 1250128067203
Bundle-Name: Example Gradle Activator
Bundle-ManifestVersion: 2
Bundle-Activator: org.gradle.GradleActivator
Import-Package: groovy.lang;version="1.6",org.codehaus.groovy.reflecti
on;version="1.6",org.codehaus.groovy.runtime;version="1.6",org.codeha
us.groovy.runtime.callsite;version="1.6",org.gradle;version="1.0",org
.osgi.framework;version="1.4"
Bundle-SymbolicName: gradle_tooling.osgi