From a38a1aa4d0dd0eddc2e69e08461c9785fee565ef Mon Sep 17 00:00:00 2001
From: Eugene Yokota <eed3si9n@gmail.com>
Date: Wed, 12 Nov 2025 22:38:45 -0500
Subject: [PATCH] [2.x] perf: cache isSupershellEnabled

**Problem**
isSupershellEnabled apparently shows up in profiling
constructing the Map structure for sys props.

**Solution**
Cache isSupershellEnabled.
---
 .../src/main/scala/sbt/internal/util/Terminal.scala           | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/internal/util-logging/src/main/scala/sbt/internal/util/Terminal.scala b/internal/util-logging/src/main/scala/sbt/internal/util/Terminal.scala
index 76016d953..72ec2bb01 100644
--- a/internal/util-logging/src/main/scala/sbt/internal/util/Terminal.scala
+++ b/internal/util-logging/src/main/scala/sbt/internal/util/Terminal.scala
@@ -953,12 +953,12 @@ object Terminal {
         try JLine3.exitRawMode(system)
         catch { case _: java.io.IOError => }
       }
-    override def isColorEnabled: Boolean =
+    override lazy val isColorEnabled: Boolean =
       props
         .map(_.color)
         .getOrElse(isColorEnabledProp.getOrElse(Terminal.isColorEnabled))
 
-    override def isSupershellEnabled: Boolean =
+    override lazy val isSupershellEnabled: Boolean =
       props
         .map(_.supershell)
         .getOrElse(System.getProperty("sbt.supershell") match {