Support packageSrc in all versions of sbt

[mdedetrich]

I know that @raboof had reservations about doing such a change, but I wanted to see whether the deterministic issues carried over to sbtVersion (which I highly doubt).

@raboof Let me know if you still have reservations with this change, the idea is to merge this into main and manually test this against various pekko projects against a snapshot of sbt-apache-sonatype and if there is an issue then revert this commit.

[raboof]

I agree the sbtVersion is highly unlikely to cause determinism issues (like apache/pekko#1470), but I'm still concerned that adding more indirection here will make the determinism issues harder to diagnose.

Once we have hunted down and fixed apache/pekko#1470 this change is 👍 , but until that time I'm not sure we should apply it to pekko yet.

[mdedetrich]

Once we have hunted down and fixed apache/pekko#1470 this change is 👍 , but until that time I'm not sure we should apply it to pekko yet.

Yup this is no rush to merge, going to go on holidays for a few days without my laptop anyways. I will just quickly add a test with a different sbt version and we can merge when ready.

[mdedetrich]

@raboof I just added a regression test which I can confirm replicates and tests all of the expected behaviour. Once things have stabalized in Pekko with 1.10.2 we can look into merging this.