Metals: DownloadDependencies crashes with ScalafmtDynamicError$ConfigMissingVersion

[sideeffffect]

Describe the bug

Running scala.meta.metals.DownloadDependencies crashes with org.scalafmt.dynamic.ScalafmtDynamicError$ConfigMissingVersion: Missing version

#8 44.04 Exception in thread "main" org.scalafmt.dynamic.ScalafmtDynamicError$ConfigMissingVersion: Missing version
#8 44.04    at org.scalafmt.dynamic.ScalafmtDynamic.$anonfun$readVersion$2(ScalafmtDynamic.scala:226)
#8 44.04    at scala.util.Either$LeftProjection.flatMap(Either.scala:561)
#8 44.04    at org.scalafmt.dynamic.ScalafmtDynamic.readVersion(ScalafmtDynamic.scala:222)
#8 44.04    at org.scalafmt.dynamic.ScalafmtDynamic.resolveConfigWithScalafmt(ScalafmtDynamic.scala:133)
#8 44.05    at org.scalafmt.dynamic.ScalafmtDynamic.$anonfun$resolveConfig$4(ScalafmtDynamic.scala:119)
#8 44.05    at scala.util.Try$.apply(Try.scala:213)
...

Visible on the PR https://github.com/che-dockerfiles/che-sidecar-scala/pull/9 check here:
https://github.com/che-dockerfiles/che-sidecar-scala/pull/9/checks?check_run_id=1302331720#step:4:696

To Reproduce

METALS_VERSION="0.9.4"
coursier launch -r sonatype:snapshots org.scalameta:metals_2.12:$METALS_VERSION --main scala.meta.metals.DownloadDependencies

The line in Dockerfile
https://github.com/che-dockerfiles/che-sidecar-scala/blob/60bba4d43f85588c3bb8e2248a792d70ce994cfb/Dockerfile#L40

Expected behavior

Shouldn't crash, a default (latest?) Scalafmt version should be downloaded.

Installation:

• Operating system: GitHub Actions, ubuntu-latest
• Metals version: v0.9.4

[ckipp01]

Thanks for the report @sideeffffect, I'm able to reproduce this. We'll have to take a closer look to see what's going on. At initial glance, this shouldn't happen since it should default to the scalafmt version we have defined in our build utilizing BuildInfo, so something's obviously going wrong.

[tgodzik]

Thanks for reporting, I can reproduce the issue locally and added the fix.

[sideeffffect]

Will this be released soon? Or is there a snapshot version available?

[tgodzik]

The snapshot version is always listed here: https://scalameta.org/metals/docs/editors/overview.html

We are also planning on doing a new release soon.