expose scalafix 2.13 patch version in scalafix-interfaces

[bjaglin]

Follow-up of #1118

[olafurpg]

LGTM 👍

[bjaglin]

I wonder if these scala methods are actually used/useful, as you need scalafix-cli to get an implementation for that interface, but to load that scalafix-cli, you must have looked up the scala versions from scalafix-interfaces.properties. Is there another scenario I am missing?

[olafurpg]

It's a good point. Maybe not 🤔 I feel like the architecture would make more sense if we have a bit of glue code implemented in Java as part of scalafix-interfaces that provides

• coursier resolution/fetch
• classloading of the correct scalafix-cli

[bjaglin]

Agreed, that would be a good first step to push up some stuff currently in sbt-scalafix (and mill-scalafix, etc), as also discussed in scalacenter/sbt-scalafix#121 (review). I'll file an issue for that.