From 00632754abea171be7d18b276d62384fd596fd5b Mon Sep 17 00:00:00 2001
From: BrianHotopp <brihoto@gmail.com>
Date: Fri, 10 Apr 2026 01:31:52 -0400
Subject: [PATCH] [2.x] fix: Add --fail to curl in launcher to prevent corrupt
 jars (#9003)

When the download URL returns an HTTP error (e.g. 404), curl without
--fail exits 0 and saves the error page HTML as the jar file. This
leaves a corrupt jar that causes confusing errors on subsequent runs.

With --fail, curl returns a non-zero exit code on HTTP errors and
does not write the response body to the output file.

Fixes #6654

Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
---
 sbt | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sbt b/sbt
index 5ab69d315..c32343fe0 100755
--- a/sbt
+++ b/sbt
@@ -142,7 +142,7 @@ download_url () {
   local jar="$2"
   mkdir -p $(dirname "$jar") && {
     if command -v curl > /dev/null; then
-      curl --silent -L "$url" --output "$jar"
+      curl --fail --silent -L "$url" --output "$jar"
     elif command -v wget > /dev/null; then
       wget --quiet -O "$jar" "$url"
     else