Packaging Seems To Ignore Existing Artifact

[btab]

Hiya,

Not sure if this is by design, but I'm assuming that if I'm in SBT and type...

one-jar

one-jar

...the second invocation should do no work. However it always seems to rebuild the artifact.

My SBT foo isn't strong enough to work out whether this is a missing dependency rule or something else.

[retronym]

I would need to add the caching to this plugin. SBT has a facility, but it isn't automatic.