nles / sbt-multiproject-example

simple multi-project example

SBT testing project

Working

• sbt test on all projects
• sbt PROJ/run on projects
• dependencies: banana and apple depend on fruitLib (ok for: assembly, run, eclipse)

Important

• ✔ multi-project sbt
• ✔ multi-project works with eclipse (internal project dependencies added in path)
• ✔ unit testing
• ✔ unit test eclipse integration (use http://www.scalatest.org/user_guide/using_scalatest_with_eclipse )
• ✔ capable of publishing to a local maven repo
• override location of local maven repo
• capable of publishing to an s3 repository
• ✔ ivy dependencies
• ✔ maven dependencies
• ✔ assembly

Nice to have

• generating a POM for maven systems
• shareable sbt config for some elements?

Tips & tricks

Files

• ROOT/project/Build.scala: multi-project definition. This file is loaded with the root project, before build.sbt is loaded. Internal dependencies (i.e. between subprojects of this multi-project setup) should be defined there, and not in one of the build.sbt
• build.sbt: each project has one. Put stuff unrelated to multi-project-ness
• assembly.sbt: assembly settings

Executing commands

By default, will run on root and recursively run on child projects

• run on root project: sbt run
• run on specific project: sbt apple/run

Maven install

• use sbt publish (configured in build.sbt)
• can specify a custom location for the maven repo: -Dmaven.repo. Example:

sbt -Dmaven.repo=/home/bob/tmp/mavenRepo publish