From 99f3a841f46f956d145a6389980d3d3df8ddb0ee Mon Sep 17 00:00:00 2001
From: LB <lbellows@users.noreply.github.com>
Date: Tue, 1 Sep 2026 18:16:40 -0400
Subject: [PATCH] Do not mark an FTB App pack installed after a failed
 installer (#4251)

Co-authored-by: LCB <me@lbellows.com>
---
 scripts/start-deployFTBA | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/scripts/start-deployFTBA b/scripts/start-deployFTBA
index 15505bec..b87a6420 100755
--- a/scripts/start-deployFTBA
+++ b/scripts/start-deployFTBA
@@ -9,7 +9,7 @@ ftbInstallMarker=".ftb-installed"
 # shellcheck source=start-utils
 . "$(dirname "$0")/start-utils"
 isDebugging && set -x
-set -e
+set -e -o pipefail
 
 #
 #{
@@ -93,7 +93,10 @@ if isTrue "$FTB_FORCE_REINSTALL" ||
 
   log "Installing modpack ID ${FTB_MODPACK_ID}, version ID ${FTB_MODPACK_VERSION_ID}"
   log "This could take a while..."
-  ${ftbInstaller} -pack "${FTB_MODPACK_ID}" -version "${FTB_MODPACK_VERSION_ID}" -auto -force -no-java | tee ftb-installer.log
+  if ! ${ftbInstaller} -pack "${FTB_MODPACK_ID}" -version "${FTB_MODPACK_VERSION_ID}" -auto -force -no-java | tee ftb-installer.log; then
+    logError "FTB installer failed for modpack ID ${FTB_MODPACK_ID}, version ID ${FTB_MODPACK_VERSION_ID}"
+    exit 1
+  fi
   rm -f forge*installer.jar
 
   echo "${FTB_MODPACK_ID}=${FTB_MODPACK_VERSION_ID}" > ${ftbInstallMarker}