WIP: Cross-compile with 2.13

[philvarner]

Overview

These changes allow cross-compilation between 2.11, 2.12, and 2.13.

Packages that depend on 2.13 support from Spark 3.2 (not yet release) will obviously not compile (or even update). For package that do not depend on Spark (e.g., raster, vector), 2.13 does not correctly build yet, as there are ~10 minor code changes that need to be made to allow that. The only issue that is currently a blocker is in raster, the implicits interpolation.Implicits, summary.Implicits, and summary.polygonal.Implicits, can't be found.

Checklist

• ./CHANGELOG.md updated, if necessary. Link to the issue if closed, otherwise the PR.
• Module Hierarchy updated, if necessary
• docs guides update, if necessary
• New user API has useful Scaladoc strings
• Unit tests added for bug-fix or new feature

Demo

Optional. Screenshots/REPL

Notes

Optional. Ancillary topics, caveats, alternative strategies that didn't work out, anything else.

Closes #XXX

[pomadchin]

I know that it is premature, but I'd drop 2.11 and move towards Spark 3 (see #3294); we have a greenlight here since GeoMesa is also crosscompiled against scala 2.12 now and is able to work with Spark 3.0.x

[philvarner]

I think that's the right thing to do when the spark upgrade happens.

[pomadchin]

btw the spire version (as well as some other libs versions) should be aligned with Spark versions. i.e. if it is Spark 3 than it should be 0.17.0-M1 (but probably 0.17.0 is still compatible)

[pomadchin]

I think the blocker you're talking about is caused by the relative packages namings. I don't remember the details though.

[philvarner]

I think the blocker you're talking about is caused by the relative packages namings. I don't remember the details though.

It seems to be because geotrellis.raster.Implicits has import geotrellis.vector._, which causes confusion between geotrellis.vector.{interpolation,summary,summary.polygonal}.Implicits and geotrellis.raster.{interpolation,summary,summary.polygonal}.Implicits