prism-tui PoC

resources/installer/linux/remove-vst3-from-system.sh

@@ -4,7 +4,42 @@
 
 set -eu
 
+# Debian postrm reports upgrades by name; RPM postun reports the number of
+# installed package versions remaining. Keep shared resources during either
+# upgrade path and remove them only on a real uninstall.
+remove_action="${1:-}"
+case "$remove_action" in
+  upgrade|failed-upgrade|abort-*)
+    exit 0
+    ;;
+  ''|*[!0-9]*)
+    ;;
+  *)
+    if [ "$remove_action" -gt 0 ]; then
+      exit 0
+    fi
+    ;;
+esac
+
 DEST_DIR="${PRISM_VST3_DEST_DIR:-/usr/lib/vst3}"
+TUI_LINK="${PRISM_TUI_LINK_PATH:-/usr/bin/prism-tui}"
+
+remove_tui_link() {
+  [ -L "$TUI_LINK" ] || return 0
+  tui_target="$(readlink "$TUI_LINK")"
+  case "$tui_target" in
+    /opt/Prism/resources/tui/prism-tui|/opt/prism/resources/tui/prism-tui)
+      rm "$TUI_LINK"
+      ;;
+    *)
+      if [ -n "${PRISM_TUI_SOURCE_PATH:-}" ] && [ "$tui_target" = "$PRISM_TUI_SOURCE_PATH" ]; then
+        rm "$TUI_LINK"
+      else
+        echo "Prism TUI removal: $TUI_LINK points elsewhere and was left unchanged." >&2
+      fi
+      ;;
+  esac
+}
 
 remove_plugin() {
   rm -rf "$DEST_DIR/$1"
@@ -17,5 +52,6 @@ remove_plugin "Prism Loudness Meter.vst3"
 remove_plugin "Prism Vectorscope.vst3"
 remove_plugin "Prism Spectrogram.vst3"
 remove_plugin "Prism Waveform.vst3"
+remove_tui_link
 
 echo "Prism VST3 plugins removed from $DEST_DIR"