feat: Allow plugins to signal to deactivate themselves

Necessary when a plugin is unsupported

plugins/src/pop_shell/mod.rs

@@ -25,7 +25,11 @@ impl Type for Item {
 pub async fn main() {
     let connection = match Connection::new_session() {
         Ok(conn) => conn,
-        Err(_) => return,
+        Err(_) => {
+            let mut out = async_stdout();
+            let _ = crate::send(&mut out, PluginResponse::Deactivate);
+            return;
+        }
     };
 
     let mut app = App::new(connection, async_stdout());

service/src/lib.rs

@@ -139,6 +139,12 @@ impl<O: Write> Service<O> {
                             gpu_preference,
                         });
                     }
+
+                    // Report the plugin as finished and remove it from future polling
+                    PluginResponse::Deactivate => {
+                        self.finished(plugin).await;
+                        let _ = self.plugins.remove(plugin);
+                    }
                 },
 
                 // When a plugin has exited, the sender attached to the plugin will be dropped

src/lib.rs

@@ -72,11 +72,13 @@ pub enum PluginResponse {
     Clear,
     /// Close the launcher.
     Close,
-    // Additional options for launching a certain item
+    // Additional options for launching a certain item.
     Context {
         id: Indice,
         options: Vec<ContextOption>,
     },
+    /// Instruct the launcher service to deactivate this plugin.
+    Deactivate,
     // Notifies that a .desktop entry should be launched by the frontend.
     DesktopEntry {
         path: PathBuf,