From f8c0a91527e0b79b06d2740d3899a22c0a66aa10 Mon Sep 17 00:00:00 2001
From: friendseeker <66892505+Friendseeker@users.noreply.github.com>
Date: Mon, 14 Oct 2024 17:17:30 -0700
Subject: [PATCH] Write header before starting scribe

---
 .../sbt/internal/inc/consistent/ParallelGzipOutputStream.scala | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/internal/zinc-persist/src/main/scala/sbt/internal/inc/consistent/ParallelGzipOutputStream.scala b/internal/zinc-persist/src/main/scala/sbt/internal/inc/consistent/ParallelGzipOutputStream.scala
index f66aff12b..b5de1c1bf 100644
--- a/internal/zinc-persist/src/main/scala/sbt/internal/inc/consistent/ParallelGzipOutputStream.scala
+++ b/internal/zinc-persist/src/main/scala/sbt/internal/inc/consistent/ParallelGzipOutputStream.scala
@@ -99,7 +99,6 @@ object ParallelGzipOutputStream {
     }
 
     override def run(): Unit = {
-      out.write(header)
       loop()
     }
   }
@@ -128,6 +127,8 @@ final class ParallelGzipOutputStream(out: OutputStream, parallelism: Int)
   private val workerCount = math.max(1, parallelism - 1)
   private val workers = new ArrayBlockingQueue[Worker](workerCount)
   private val buffers = new LinkedTransferQueue[Block]()
+  
+  out.write(header)
   private val scribe = new Scribe(out, buffers)
   scribe.start()