diff --git a/packaging/functions.sh b/packaging/functions.sh
index 8fb31b84e1..3c2e27c0a2 100755
--- a/packaging/functions.sh
+++ b/packaging/functions.sh
@@ -249,15 +249,15 @@ install_linux_shortcuts() (
 
 			# wrapper scripts
 			install -d "${BUILD_PATH}/${BIN_PATH}"
-			sed 's/{DEBUG}/--debug/' "${SRC_PATH}/packaging/linux/openra.in" | sed "s|{GAME_INSTALL_DIR}|${OPENRA_PATH}|" | sed "s|{BIN_DIR}|${BIN_PATH}|" | sed "s/{MODID}/${MOD_ID}/g" | sed "s/{TAG}/${VERSION}/g" | sed "s/{MODNAME}/${MOD_NAME}/g" > "${SRC_PATH}/packaging/linux/openra-${MOD_ID}"
-			sed 's/{DEBUG}/--debug/' "${SRC_PATH}/packaging/linux/openra-server.in" | sed "s|{GAME_INSTALL_DIR}|${OPENRA_PATH}|" | sed "s/{MODID}/${MOD_ID}/g" > "${SRC_PATH}/packaging/linux/openra-${MOD_ID}-server"
+			sed -e 's/{DEBUG}/--debug/' -e "s|{GAME_INSTALL_DIR}|${OPENRA_PATH}|" -e "s|{BIN_DIR}|${BIN_PATH}|" -e "s/{MODID}/${MOD_ID}/g" -e "s/{TAG}/${VERSION}/g" -e "s/{MODNAME}/${MOD_NAME}/g" "${SRC_PATH}/packaging/linux/openra.in" > "${SRC_PATH}/packaging/linux/openra-${MOD_ID}"
+			sed -e 's/{DEBUG}/--debug/' -e "s|{GAME_INSTALL_DIR}|${OPENRA_PATH}|" -e "s/{MODID}/${MOD_ID}/g" "${SRC_PATH}/packaging/linux/openra-server.in" > "${SRC_PATH}/packaging/linux/openra-${MOD_ID}-server"
 			install -m755 "${SRC_PATH}/packaging/linux/openra-${MOD_ID}" "${BUILD_PATH}/${BIN_PATH}"
 			install -m755 "${SRC_PATH}/packaging/linux/openra-${MOD_ID}-server" "${BUILD_PATH}/${BIN_PATH}"
 			rm "${SRC_PATH}/packaging/linux/openra-${MOD_ID}" "${SRC_PATH}/packaging/linux/openra-${MOD_ID}-server"
 
 			# desktop files
 			install -d "${BUILD_PATH}${SHARE_PATH}/applications"
-			sed "s/{MODID}/${MOD_ID}/g" "${SRC_PATH}/packaging/linux/openra.desktop.in" | sed "s/{MODNAME}/${MOD_NAME}/g" | sed "s/{TAG}/${VERSION}/g" > "${SRC_PATH}/packaging/linux/openra-${MOD_ID}.desktop"
+			sed -e "s/{MODID}/${MOD_ID}/g" -e "s/{MODNAME}/${MOD_NAME}/g" -e "s/{TAG}/${VERSION}/g" "${SRC_PATH}/packaging/linux/openra.desktop.in" > "${SRC_PATH}/packaging/linux/openra-${MOD_ID}.desktop"
 			install -m644 "${SRC_PATH}/packaging/linux/openra-${MOD_ID}.desktop" "${BUILD_PATH}${SHARE_PATH}/applications"
 			rm "${SRC_PATH}/packaging/linux/openra-${MOD_ID}.desktop"
 
@@ -274,7 +274,7 @@ install_linux_shortcuts() (
 
 			# MIME info
 			install -d "${BUILD_PATH}${SHARE_PATH}/mime/packages"
-			sed "s/{MODID}/${MOD_ID}/g" "${SRC_PATH}/packaging/linux/openra-mimeinfo.xml.in" | sed "s/{TAG}/${VERSION}/g" > "${SRC_PATH}/packaging/linux/openra-${MOD_ID}.xml"
+			sed -e "s/{MODID}/${MOD_ID}/g" -e "s/{TAG}/${VERSION}/g" "${SRC_PATH}/packaging/linux/openra-mimeinfo.xml.in" > "${SRC_PATH}/packaging/linux/openra-${MOD_ID}.xml"
 			install -m644 "${SRC_PATH}/packaging/linux/openra-${MOD_ID}.xml" "${BUILD_PATH}${SHARE_PATH}/mime/packages/openra-${MOD_ID}.xml"
 			rm "${SRC_PATH}/packaging/linux/openra-${MOD_ID}.xml"
 		fi
@@ -322,7 +322,7 @@ install_linux_appdata() (
 
 		install -d "${BUILD_PATH}${SHARE_PATH}/metainfo"
 
-		sed "s/{MODID}/${MOD_ID}/g" "${SRC_PATH}/packaging/linux/openra.metainfo.xml.in" | sed "s/{MOD_NAME}/${MOD_NAME}/g" | sed "s/{SCREENSHOT_RA}/${SCREENSHOT_RA}/g" | sed "s/{SCREENSHOT_CNC}/${SCREENSHOT_CNC}/g" | sed "s/{SCREENSHOT_D2K}/${SCREENSHOT_D2K}/g"> "${SRC_PATH}/packaging/linux/openra-${MOD_ID}.metainfo.xml"
+		sed -e "s/{MODID}/${MOD_ID}/g" -e "s/{MOD_NAME}/${MOD_NAME}/g" -e "s/{SCREENSHOT_RA}/${SCREENSHOT_RA}/g" -e "s/{SCREENSHOT_CNC}/${SCREENSHOT_CNC}/g" -e "s/{SCREENSHOT_D2K}/${SCREENSHOT_D2K}/g" "${SRC_PATH}/packaging/linux/openra.metainfo.xml.in" > "${SRC_PATH}/packaging/linux/openra-${MOD_ID}.metainfo.xml"
 		install -m644 "${SRC_PATH}/packaging/linux/openra-${MOD_ID}.metainfo.xml" "${BUILD_PATH}${SHARE_PATH}/metainfo"
 		rm "${SRC_PATH}/packaging/linux/openra-${MOD_ID}.metainfo.xml"
 
diff --git a/packaging/linux/buildpackage.sh b/packaging/linux/buildpackage.sh
index d19888e7e7..0eb4933431 100755
--- a/packaging/linux/buildpackage.sh
+++ b/packaging/linux/buildpackage.sh
@@ -1,7 +1,7 @@
 #!/bin/bash
 # OpenRA packaging script for Linux (AppImage)
 
-set -o errexit || exit $?
+set -o errexit -o pipefail || exit $?
 
 command -v tar >/dev/null 2>&1 || { echo >&2 "Linux packaging requires tar."; exit 1; }
 command -v curl >/dev/null 2>&1 || command -v wget > /dev/null 2>&1 || { echo >&2 "Linux packaging requires curl or wget."; exit 1; }
diff --git a/packaging/linux/openra.appimage.in b/packaging/linux/openra.appimage.in
index bab1354412..0254030737 100755
--- a/packaging/linux/openra.appimage.in
+++ b/packaging/linux/openra.appimage.in
@@ -11,6 +11,7 @@ if [ -n "${APPIMAGE}" ]; then
 	LAUNCHER=${APPIMAGE}
 
 	APPIMAGEID=$(printf "file://%s" "${APPIMAGE}" | md5sum | cut -d' ' -f1)
+	test -n "${APPIMAGEID}"
 	LAUNCHER_NAME="appimagekit_${APPIMAGEID}-openra-{MODID}.desktop"
 	LAUNCHER_PATH="${HOME}/.local/share/applications/${LAUNCHER_NAME}"
 	export SDL_VIDEO_X11_WMCLASS="openra-{MODID}-{TAG}"
diff --git a/packaging/macos/buildpackage.sh b/packaging/macos/buildpackage.sh
index 6800ea2097..768ba81c56 100755
--- a/packaging/macos/buildpackage.sh
+++ b/packaging/macos/buildpackage.sh
@@ -14,7 +14,7 @@
 #   MACOS_DEVELOPER_PASSWORD: App-specific password for the developer account
 #
 
-set -o errexit || exit $?
+set -o errexit -o pipefail || exit $?
 
 MONO_TAG="osx-launcher-20201222"
 
@@ -189,8 +189,8 @@ build_platform() {
 		for MOD in "Red Alert" "Tiberian Dawn"; do
 			for f in $(find /Volumes/OpenRA/OpenRA\ -\ ${MOD}.app/Contents/MacOS/*); do
 				g="/Volumes/OpenRA/OpenRA - Dune 2000.app/Contents/MacOS/"$(basename "${f}")
-				hashf=$(shasum "${f}" | awk '{ print $1 }')
-				hashg=$(shasum "${g}" | awk '{ print $1 }')
+				hashf=$(shasum "${f}" | awk '{ print $1 }') || :
+				hashg=$(shasum "${g}" | awk '{ print $1 }') || :
 				if [ "${hashf}" = "${hashg}" ]; then
 					echo "Deduplicating ${f}"
 					rm "${f}"
diff --git a/packaging/package-all.sh b/packaging/package-all.sh
index 9ce2104256..4f57b00d9a 100755
--- a/packaging/package-all.sh
+++ b/packaging/package-all.sh
@@ -1,7 +1,7 @@
 #!/bin/bash
 # OpenRA master packaging script
 
-set -o errexit || exit $?
+set -o errexit -o pipefail || exit $?
 
 if [ $# -ne "2" ]; then
 	echo "Usage: ${0##*/} version outputdir."
diff --git a/packaging/source/buildpackage.sh b/packaging/source/buildpackage.sh
index 746e316333..6895c77cf6 100755
--- a/packaging/source/buildpackage.sh
+++ b/packaging/source/buildpackage.sh
@@ -1,7 +1,7 @@
 #!/bin/bash
 # OpenRA packaging script for versioned source tarball
 
-set -o errexit || exit $?
+set -o errexit -o pipefail || exit $?
 
 if [ $# -ne "2" ]; then
 	echo "Usage: $(basename "$0") tag outputdir"
diff --git a/packaging/windows/buildpackage.sh b/packaging/windows/buildpackage.sh
index 5d17e8ee73..90886c7af6 100755
--- a/packaging/windows/buildpackage.sh
+++ b/packaging/windows/buildpackage.sh
@@ -1,7 +1,7 @@
 #!/bin/bash
 # OpenRA packaging script for Windows
 
-set -o errexit || exit $?
+set -o errexit -o pipefail || exit $?
 
 command -v curl >/dev/null 2>&1 || command -v wget > /dev/null 2>&1 || { echo >&2 "Windows packaging requires curl or wget."; exit 1; }
 command -v makensis >/dev/null 2>&1 || { echo >&2 "Windows packaging requires makensis."; exit 1; }