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sbt/MIGRATION.md

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Migration Guide from sbt 1 to sbt 2

In principle, migrating your build from sbt 1 to sbt 2 should be a matter of updating the sbt version in build.properties. However, there are some changes in behavior that you may need to account for.

This document will outline possible changes in behavior that affect your build when migrating from sbt 1 to sbt 2. Implement them in case out-of-the-box migration does not work.

Changes in behavior

  • exportJars defaults to true, was false. This might break getResource("/") and resource.toURI. Set exportJars := false if this logic is broken in your build, producing NullPointerExceptions and FileSystemNotFoundExceptions. Set exportJars := false in your build if you want to keep the old behavior. The change was introduced by sbt/sbt#7464, see also blog.