SCALA 3 MIGRATION: REPORT FROM THE FIELD

Summary from the TLDR Web Dev newsletter

A developer migrated a large Scala 2.13 project to Scala 3, which was tough at first due to dropped features and lots of code changes. However, the migration was made easier by using IntelliJ's migration tools, using sbt source generators with Scalameta to replace lost macro annotation functionality, and finding workarounds for removed type projections.