deb: upgrades keep the Verae_Timestamping queue and its jobs (postinst creates only if missing, prerm removes only on remove); default VERSION 0.3.2

platform/linux/deb/build-deb.sh

@@ -11,7 +11,7 @@
 set -euo pipefail
 
 ROOT="$(cd "$(dirname "$0")/../../.." && pwd)"
-VERSION="${VERSION:-0.1.2}"
+VERSION="${VERSION:-0.3.2}"
 OUT="${OUT:-$ROOT/build/deb}"
 ARCHS="${1:-all}"
 PKG_NAME="verae-print"
@@ -113,11 +113,14 @@ EOF
 #!/bin/sh
 set -e
 if command -v lpadmin >/dev/null 2>&1 && [ -x /usr/lib/cups/backend/verae ]; then
-  lpadmin -x Verae_Timestamping 2>/dev/null || true
+  # Create the queue only if it doesn't exist: deleting it on upgrade purges
+  # any jobs waiting in it.
+  if ! lpstat -v Verae_Timestamping >/dev/null 2>&1; then
     lpadmin -p Verae_Timestamping -E -v verae:/ -m raw \
       -D "Verae Timestamping" -L "Digests-only Verae stamp" 2>/dev/null || \
     lpadmin -p Verae_Timestamping -E -v verae:/ -m everywhere \
       -D "Verae Timestamping" 2>/dev/null || true
+  fi
   cupsenable Verae_Timestamping 2>/dev/null || true
   cupsaccept Verae_Timestamping 2>/dev/null || true
 fi
@@ -129,7 +132,8 @@ EOF
   cat >"$stage/DEBIAN/prerm" <<'EOF'
 #!/bin/sh
 set -e
-if command -v lpadmin >/dev/null 2>&1; then
+# Only drop the queue on a real removal, not on upgrade.
+if [ "$1" = "remove" ] && command -v lpadmin >/dev/null 2>&1; then
   lpadmin -x Verae_Timestamping 2>/dev/null || true
 fi
 exit 0