Github user dlaboss commented on the issue:
https://github.com/apache/incubator-edgent-samples/pull/5
I think we should just leave things as is / close this for now as it didn't
fix the issue and there's an acceptable workaround of just manually editing the
property in the top-level pom.
Making the samples only build for a single platform seems undesirable to
me. Also, fwiw, I suspect $project.* variables are ok (at least groupId) as
they are static/computable in isolation of the single pom they're used in
(their presence didn't prevent a good outcome when the top-level
edgent.runtime.version property was manually set).
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