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https://issues.apache.org/jira/browse/FELIX-6019?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16738564#comment-16738564
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David Jencks commented on FELIX-6019:
-------------------------------------

I think you have created a new concept of optional component supported in none 
of osgi, bnd, or karaf features. FWIW although it’s been several years I think 
I encountered a similar problem with osgi subsystems and I don’t recall if or 
how I solved it. I believe that if you installed your bundles individually into 
karaf rather than as a feature you would have no problems. The problem is that 
karaf’s feature resolver is insisting on resolving the non-runtime 
effective:=active requirements. Generating the requirement is I believe part of 
the ds spec so I would not advise arbitrarily removing it except perhaps as a 
temporary workaround. I think better choices are:
- modifying your component to not generate the requirement (such as 0..n 
reference set to 1..n with mandatory configuration supplied as json/yaml in the 
bundle for the configuration)
- satisfying the requirement with a disabled component that won’t bind
- working with karaf to introduce the concept of optional requirement for a 
feature.  
What I don’t understand is why, AFAICT, you have not considered the third 
option.

> Provide a bnd plugin to remove header parameters
> ------------------------------------------------
>
>                 Key: FELIX-6019
>                 URL: https://issues.apache.org/jira/browse/FELIX-6019
>             Project: Felix
>          Issue Type: New Feature
>            Reporter: Oliver Lietz
>            Assignee: Oliver Lietz
>            Priority: Major
>
> The plugin removes parameters from bundle headers.
> See bnd issue [#2429|https://github.com/bndtools/bnd/issues/2429] and 
> SLING-8178.
> Example instruction (for bnd file):
> {noformat}
> -plugin:\
>   org.apache.felix.bnd.plugins.header.RemoveParametersPlugin;\
>     
> 'Require-Capability'='osgi.service;filter:="(objectClass=org.osgi.service.event.EventAdmin)";effective:=active,osgi.service;filter:="(objectClass=org.osgi.service.event.EventHandler)";effective:=active;cardinality:=multiple'
> {noformat}
> Initial source: 
> https://svn.apache.org/repos/asf/felix/sandbox/olli/org.apache.felix.bnd.plugins/



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