FAQ

If you have any questions, don’t hesitate to ask on gitter.

Troubleshooting

I get resolution errors for org.scalameta:semanticdb-scalac

Make sure you are using a supported Scala version: 2.11.11, 2.12.3. Note, the version must match exactly, including the last number.

Enclosing tree [2873] does not include tree [2872]

Scalafix requires code to compile with the scalac option -Yrangepos. A macro that emits invalid tree positions is usually the cause of compiler errors triggered by -Yrangepos. Other tools like the presentation compiler (ENSIME/Scala IDE) require -Yrangepos to work properly.

I get exceptions about coursier

If you use sbt-coursier, make sure you are on version 1.0.0-RC10.

Scalafix doesn’t do anything

• If you use sbt-scalafix, try Verify sbt installation
• Make sure that you are running at least one rule.
• Make sure that you are using a supported Scala version: 2.11.11, 2.12.3.

RemoveUnusedImports does not remove unused imports

Make sure that you followed the instructions in RemoveUnusedImports regarding scalac options.

Features

IDE support

Scalafix has no IDE support at the moment.