trying to figure out the ideal way to feature gate systemd

src/main.rs

@@ -415,18 +415,20 @@ async fn start_component(
 		)
 		.await
 		.unwrap_or_else(|_| panic!("failed to start {}", cmd));
-	if *is_systemd_used() {
+	#[cfg(feature = "systemd")]
-		//currently pid is optional hence the double unwrap
+	{
-		let pids = process_manager.get_pid(key).await.unwrap().unwrap();
+		if *is_systemd_used() {
-		//spawn_scope takes a vec of pids in case we want to spawn a scope for multiple processes
+			//currently pid is optional hence the double unwrap
-		spawn_scope(cmd.to_string(), vec![pids])
+			let pids = process_manager.get_pid(key).await.unwrap().unwrap();
-			.await
+			//spawn_scope takes a vec of pids in case we want to spawn a scope for multiple processes
-			.unwrap_or_else(|err| {
+			spawn_scope(cmd.to_string(), vec![pids])
-				warn!(
+				.await
-					"Failed to spawn scope for {}. Creating transient unit failed with {}",
+				.unwrap_or_else(|err| {
-					cmd, err
+					warn!(
-				);
+						"Failed to spawn scope for {}. Creating transient unit failed with {}",
-			});
+						cmd, err
+					);
+				});
+		}
 	}
-	process_manager.get_pid(key).await.unwrap();
 }

src/systemd.rs

@@ -47,6 +47,7 @@ pub fn is_systemd_used() -> &'static bool {
 	)
 }
 
+#[cfg(feature = "systemd")]
 ///Spawn a systemd scope unit with the given name and PIDs.
 pub async fn spawn_scope(mut command: String, pids: Vec<u32>) -> Result<(), zbus::Error> {
 	let connection = Connection::session().await?;