Hi there,
                          as already mentioned by Markward, we want
                            to add updatable language features to our
                            tycho-built product.
                          
                           
                          We have the following setup now:
                            - a feature-based product named
                            "example.product", containing the features:
                                com.ourcompany.feature.application (here
                            we have added a plugin called
                            "com.ourcompany.client.i18n", containing
                            some i18n specific code and default
                            messages)
                                com.ourcompany.feature.thirdparty
                            - "example.p2.inf" file
                          here we are specifying additional
                            language features containing fragments. The
                            above mentioned plugin
                            "com.ourcompany.client.i18n" is the host
                            plugin of these fragments.
                          The example.p2.inf file has the following
                            content:
                          requires.0.namespace = com.ourcompany
                            requires.0.name =
                            com.ourcompany.client.feature.i18n.de_CH.group
                            requires.0.range = [1.0.0, 1.2.0]
                          requires.1.namespace = com.ourcompany
                            requires.1.name =
                            com.ourcompany.client.feature.i18n.de_DE.group
                            requires.1.range = [1.0.0, 1.2.0]
                          requires.2.namespace = com.ourcompany
                            requires.2.name =
                            com.ourcompany.client.feature.i18n.en.group
                            requires.2.range = [1.0.0, 1.2.0]
                          instructions.configure=\
                             
addRepository(type:0,location:http${#58}//ourcompany.com/language-repository);\
                             
addRepository(type:1,location:http${#58}//ourcompany.com/language-repository);
                          - The specified repository provides a
                            tycho build p2 repo containing the required
                            features.
                            - We have added the p2.inf file to
                            build.properties.
                             
                            At first we were thinking that running the
                            tycho product build would automatically
                            install the feature. This seems not to be
                            the case, as the features cannot be found.
                            We are wondering, if it is necessary to
                            create an extra ant script to explicitly
                            install the feature (like in Andrew's
                            approach), or if there is a less complicated
                            way of adding updatable features to our
                            product.
                          As we are new to p2 provisioning, please
                            excuse us if we are not seeing the obvious.
                            Any help would be appreciated!
                          Greetings,
                          Sonja Alberts