Building Scala Projects

Starting point. This skill captures the load-bearing sbt/Scala conventions; extend it with reference files (a full build.sbt, a CI workflow, a publish runbook) as the patterns firm up, following the same one-owner discipline as the Python skills.

Scala's failure modes cluster around the build tool and cross-versioning: a JVM or Scala version that differs between laptop and CI, a cross-build that only compiles one axis, and a publish step that half-completes on Sonatype. The rules below keep the gate honest.

build.sbt essentials

ThisBuild / scalaVersion := "3.3.4"          // pin; 3.3.x is the current LTS
ThisBuild / organization := "com.example"