From 5ea8f880346f4b36b3a61f87d6fd97e10bcbd535 Mon Sep 17 00:00:00 2001
From: friendseeker <66892505+Friendseeker@users.noreply.github.com>
Date: Thu, 30 Nov 2023 12:29:24 -0800
Subject: [PATCH] Delete products when dropping analysis

---
 .../scala/sbt/internal/inc/IncrementalCompilerImpl.scala | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/zinc/src/main/scala/sbt/internal/inc/IncrementalCompilerImpl.scala b/zinc/src/main/scala/sbt/internal/inc/IncrementalCompilerImpl.scala
index 272647bae..cd1922688 100644
--- a/zinc/src/main/scala/sbt/internal/inc/IncrementalCompilerImpl.scala
+++ b/zinc/src/main/scala/sbt/internal/inc/IncrementalCompilerImpl.scala
@@ -541,8 +541,13 @@ class IncrementalCompilerImpl extends IncrementalCompiler {
     previousSetup match {
       // The dummy output needs to be changed to .jar for this to work again.
       // case _ if compileToJarSwitchedOn(mixedCompiler.config)             => Analysis.empty
-      case Some(prev) if equiv.equiv(prev, currentSetup)                   => previousAnalysis
-      case Some(prev) if !equivPairs.equiv(prev.extra, currentSetup.extra) => Analysis.empty
+      case Some(prev) if equiv.equiv(prev, currentSetup) => previousAnalysis
+      case Some(prev) if !equivPairs.equiv(prev.extra, currentSetup.extra) =>
+        val classFileManager =
+          ClassFileManager.getClassFileManager(incOptions, output, outputJarContent)
+        val products = previousAnalysis.asInstanceOf[Analysis].relations.allProducts
+        classFileManager.delete(products.map(converter.toVirtualFile).toArray)
+        Analysis.empty
       case _ =>
         val srcs = config.sources.toSet
         Incremental.prune(srcs, previousAnalysis, output, outputJarContent, converter, incOptions)