Managed source directory doesn't seem to make it into IDEA

[justinp]

I've got a matrix for different Scala versions that I'm using in combination with a code generator. Everything builds from the sbt command line, but when I import it into IDEA, it can't find the generated sources.

From the command line:

sbt:test> model/sourceDirectories
[info] * /Users/justinp/test/model/src/main/scala
[info] * /Users/justinp/test/model/src/main/scala-2.13
[info] * /Users/justinp/test/model/src/main/scala-2
[info] * /Users/justinp/test/model/src/main/java
[info] * /Users/justinp/test/model/src/main/scalajvm
[info] * /Users/justinp/test/model/src/main/scalajvm-2.13
[info] * /Users/justinp/test/model/target/jvm-2.13/src_managed/main

That last one is where my sources have been generated.

In IDEA, I see a project model whose base directory is /Users/justinp/test/.sbt/matrix/model, which contains nothing. It depends another project model-sources, which contains the generated files (by virtue of its base directory being /Users/justinp/test/model), but the directory is not marked as "Sources."

I'd be happy to help with a PR, but I can't figure out where the breakdown occurs. If I look at the sbt-structure.xml that gets generated by IDEA, it contains the source directory I would expect (for the model project), but I don't see the model-sources project at all in there.

Thanks for any guidance you can give me. This is the last thing standing between us and upgrading (finally!) to Scala 2.13.

[Nurlan-Mammadli]

Came here with the same issue.