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https://issues.apache.org/jira/browse/FELIX-6056?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16767193#comment-16767193
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Carsten Ziegeler commented on FELIX-6056:
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That's impossible :) it doesn't exist...
> SCR exports promises
> --------------------
>
> Key: FELIX-6056
> URL: https://issues.apache.org/jira/browse/FELIX-6056
> Project: Felix
> Issue Type: Bug
> Components: Declarative Services (SCR)
> Reporter: Peter Kriens
> Priority: Major
>
> Apache Felix SCR exports promises 1.0 as a convenience. However, since this
> package contains the implementation it is a +provider+. Originally, the
> import was correct for a provider, [1,1.1). however, last July it was
> increased to [1,2). This therefore against the semantic versioning
> specification that prescribes a minor import range when providing the
> implementation of an API.
> Exporting an package like Promises is not a good idea anyway. It is only a
> convenience, promises have nothing to do with SCR in itself and that will
> always back fire in the end. Even exporting it correctly causes unnecessary
> version constraints since the order of resolving cannot be controlled. So if
> you have Promises 1.1 it depends on the order of resolving if SCR uses 1.0 or
> 1.1 and it creates nasty class spaces.
> It is inconvenient to make SCR depend on Promises. Personally I would not
> have used promises or would have included the package privately. (No API of
> SCR depends on Promises) Since SCR is such a crucial base component I
> strongly recommend to not export it from SCR.
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