Make it available for scala 2.12

[daureg]

I couldn't download it in my Scala project until I downgraded scala version 2.11.

I tried quickly to compile myself, but I'm not very proficient with scala yet. One thing I noticed is that log4j-api-scala version 2.8.1 is not available for scala 2.12.

[mhamilton723]

Thanks for reaching out @daureg i will try to bump the scala version for you. Now that Spark also moved to 2.12 this is a good time.

[MikioSuematsu]

v0.15 is scala 2.12?
It does not seem to upload to maven.

OK
https://mmlspark.azureedge.net/maven/com/microsoft/ml/spark/mmlspark_2.11/0.15/mmlspark_2.11-0.15.jar

not found.
https://mmlspark.azureedge.net/maven/com/microsoft/ml/spark/mmlspark_2.12/0.15/mmlspark_2.12-0.15.jar

Is something still underway?

[nightscape]

Same question here @mhamilton723
Can I help with a PR, or does this have to do with publishing?

[nightscape]

I checked the build scripts a little.
It looks like they're not meant for cross-publishing and the Scala version is hard-coded here.
The defvar function mentions though that it won't override existing environment variables, so I'm wondering if all one has to do is that someone from the Azure team runs the build once with SCALA_FULL_VERSION=2.12.8 and deploys the results to the repos?

[nightscape]

Ping @mhamilton723, anything one can help with wrt this issue?

[mhamilton723]

Hey @nightscape thanks for you investigation. I am not the author of that build script and hope to refactor much of this build to use more idiomatic sbt publishing stuff. if you make a PR changing that scala full version ill publish a package for you that you can use.

It looks like Azure Databricks still uses 2.11 so i dont think a full bump should be made yet, it would have to be cross compiled which might not be a trivial thing given the state of our build. For the official releases I think it might be best to wait until the whole build system gets a bit tamer. (I plan on undertaking this in the next month or two). Thanks for your flexibility!

[nightscape]

@mhamilton723 thanks for the response!
I was thinking about trying it locally, but getting into a custom build system probably takes me hours.
So I'll just wait until the build system is tamed 😉

[andrioni]

Hi @mhamilton723, it seems that you have revamped the whole build system, and it's indeed pretty nice to see a fairly standard build.sbt file now :)
Any plans to cross-build to Scala 2.12 now?

[nightscape]

I gave it a shot here:
#726