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Editorial Team
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Asked: 2026-06-11T09:14:06+00:00

In the sbt console, :replay resets execution and replays all previous commands. I would

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In the sbt console, :replay resets execution and replays all previous commands. I would have thought sbt would recompile your classes if there were changes and replay previous commands against your freshly compiled classes. But that doesn’t seem to be the case. Do I need to use JRebel for this kind of workflow? My goal is to be able to find a bug in the REPL, fix the bug, and then compile & re-run all previous commands with a single command like :reply.

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1 Answer

  1. Editorial Team

    :replay is a command of the Scala REPL, not the SBT.

    Try running sbt console with JRebel in one shell, and then, in a second shell runsbt ~compile.

    The first will give you automatic reloading of recompiled classes; the second will recompile edited classes automatically.

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