Support for dotty compiler

[danlehmann]

As far as I can tell, the scala-maven-plugin doesn't support the dotty compiler (Scala 3.0) yet. This would be a useful feature to have to allow people to get their projects compatible early.

[slandelle]

Contributions welcome :)

[slandelle]

FWIW, I've upgraded zinc to 1.4.2, maybe this would help with Scala 3 support.

[andreacastello]

Hello. Using the last version (4.4.1) with a Scala 3.0.0-RC1 project it causes this error:
Could not find artifact org.scala-lang:scala-library:jar:3.0.0-RC1

This artifact name is built at runtime with a logic that is not valid anymore for Scala 3 because the naming convention has changed (see: https://mvnrepository.com/artifact/org.scala-lang/scala3-library_3.0.0-RC1) and the class ScalaMojoSupport uses a constant token value for the artifact name.

[aesteve]

Faced the same issue. Relevant snippet:

scala-maven-plugin/src/main/java/scala_maven/ScalaMojoSupport.java

Line 288 in c35f69a

ScalaMojoSupport.SCALA_COMPILER_ARTIFACTID,

Is there a property or something we can override to test it any further? Thank you.

[slandelle]

Again: people, please be nice open source citizens: contribute!

If nobody contributes, I will definitely tackle it myself someday, meaning probably 1 year from now.

[andreacastello]

Again: people, please be nice open source citizens: contribute!

If nobody contributes, I will definitely tackle it myself someday, meaning probably 1 year from now.

You are right. I'm sorry if my comment has been seen as a call to action: it wasn't. It was just a hint of where one of the "migration issues" may be. I have taken a look at the code: in the beginning I thought I could provide a quick fix for this, but now I think that making it work on dotty will require a much bigger effort than just differentiating naming tokens for "scala" and "scala3".

I'll try to experiment a bit (but, same as you, I have not much time to dedicate to it) and come back if I have something decent to share.

[aesteve]

Sorry if my comment sounded harsh or anything. I just had a look, saw the constant in code and wanted to ask if there was a way to work around it, in order to push my experiments a bit further and try to help. Sorry. Le mer. 10 mars 2021 à 12:12, Andrea Castello <notifications@github.com> a écrit :

…

Again: people, please be nice open source citizens: contribute! If nobody contributes, I will definitely tackle it myself *someday*, meaning probably 1 year from now. You are right. I'm sorry if my comment has been seen as a call to action: it wasn't. It was just a hint of where one of the "migration issues" may be. I have taken a look at the code: in the beginning I thought I could provide a quick fix for this, but now I think that making it work on dotty will require a much bigger effort than just differentiating naming tokens for "scala" and "scala3". I'll try to experiment a bit (but, same as you, I have not much time to dedicate to it) and come back if I have something decent to share. — You are receiving this because you commented. Reply to this email directly, view it on GitHub <#393 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AALDRPJLMLXJWGDXVT567SDTC5H2RANCNFSM4LQUJ34A> .

[martin-g]

This issue could be closed in favour of this PR - #447

[davidB]

scala 3.0 support updated and release since 4.5.x