[1.x] Use JProcess for interactive forking#8678
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eed3si9n merged 1 commit intosbt:1.12.xfrom Feb 2, 2026
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**Problem/Solution** For forking that require both input and output, use a Java process instead of the Scala process.
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This is a backport of #8677
Fixes #8676
Problem
For interactive apps, including Scala REPL, it's better to use the raw Java Process, rather than Scala process that attempts to grab the output stream in a thread.
Solution
For forking that require both input and output,
use a Java process instead of the Scala process.
Note
This was inspired by #8604.