No 'scala-library*.jar' in every new IntelliJ Scala Project

Question

I have installed intelliJ-IDEA 2017.2.5 with scala plugin on Ubuntu 16.04LTS. When I create new scala project and try to run it I get:

Error:scalac:

Answer 1

Just upgraded 2017.3.3 to 2017.3.4 on sbt 1.0.3 and Scala 2.12.4. Basically, same s*#t again. In my case it was the warning "Skipping scala files without a scala sdk" for each module after project rebuild.

However, it was only an issue for the sbt project open during the update, whereas the other projects worked fine afterwards. For the broken project, I finally got its checked-out version from git to work (after "invalidate caches" and other hassle.)

So these steps may hopefully save future trouble:

1. Add the relevant project config files to VC
2. Commit project
3. Close project
4. Upgrade