From d439ab018383793b724d3b76c7077ca4bee2c9d6 Mon Sep 17 00:00:00 2001
From: xuwei-k <6b656e6a69@gmail.com>
Date: Mon, 6 Apr 2026 21:02:35 +0900
Subject: [PATCH] Remove duplicate jar files in forked console

---
 main/src/main/scala/sbt/internal/Compiler.scala | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/main/src/main/scala/sbt/internal/Compiler.scala b/main/src/main/scala/sbt/internal/Compiler.scala
index 57e9c1604..8e0ef1fe1 100644
--- a/main/src/main/scala/sbt/internal/Compiler.scala
+++ b/main/src/main/scala/sbt/internal/Compiler.scala
@@ -401,7 +401,8 @@ object Compiler:
       val siConfig = (Keys.console / Keys.scalaInstanceConfig).value
       val bridgeJars = Keys.scalaCompilerBridgeJars.value
       val state = Keys.state.value
-      val toolJars = siConfig.libraryJars ++ siConfig.allCompilerJars ++ siConfig.extraToolJars
+      val toolJars =
+        (siConfig.libraryJars ++ siConfig.allCompilerJars ++ siConfig.extraToolJars).distinct
       val toolJarsVf = toolJars.map(u => conv.toVirtualFile(Paths.get(u)): HashedVirtualFileRef)
       val fo = (task / Keys.forkOptions).value
       val service = Keys.bgJobService.value