In this repository we build and test a large corpus of open-source Scala 2 projects. Everything is built from source using Lightbend's dbuild.

The project is financed and primarily maintained by Lightbend, as part of our overall maintenance of the Scala compiler and standard library.

How big is it? The 2.13 build contains over 2 million lines of Scala code from 250 repos, and it takes about 14 hours to run, as of September 2023.

Why do this? The main goal is to guard against regressions in new versions of Scala (language, standard library, and modules). This complements the regression test suite we maintain in scala/scala. It's also a service to the open source community, providing early notice of issues and incompatibilities.

Can I run it myself? Sure, just clone the repo and ./run.

here: VirtusLab/community-build3

• August 31, 2021: Scala 2.13 community build radically simplified
• February 20, 2020: Scala 2 community build reaches goals
• January 13, 2020: 2.13.x build gets big upgrade
• October 17, 2019: Maintainability improvements made
• August 4, 2019: Community build progress report
• January 31, 2019: Community build progress report
• January 18, 2019: Scala community build grows, adds Scala 2.13 and JDK 11
• January 16, 2018: Community build grows to 141 projects, 2.8 million lines of code

Further documentation is in the wiki.