args is now optional

src/app.rs

@@ -10,7 +10,7 @@ pub struct App {
 	/// path/command to run
 	pub command: String,
 	/// arguments
-	pub args: Vec<String>,
+	pub args: Option<Vec<String>>,
 	/// should the app be restarted if it exits successfully
 	pub restart_on_success: Option<bool>,
 	/// should the app be restarted if it exits unsuccessfully
@@ -29,7 +29,8 @@ impl App {
 		info!("starting application {}", &self.name);
 
 		let mut command = Command::new(&self.command);
-		command.args(&self.args);
+		let args = self.args.as_ref();
+		command.args(args.unwrap_or(&Vec::new()));
 
 		match command.output() {
 			Ok(output) => {

src/proc.rs

@@ -20,7 +20,9 @@ impl Proc {
 		let mut command = Command::new(&app.command);
 		command.stdout(Stdio::piped());
 		command.stderr(Stdio::piped());
-		command.args(&app.args);
+
+		let args = app.args.as_ref();
+		command.args(args.unwrap_or(&Vec::new()));
 
 		let process = command.spawn_async()?;
 		let token = Token(process.id().try_into()?);

sup.toml

@@ -7,7 +7,6 @@ wait = true
 [[app]]
 name = "terminal"
 command = "alacritty"
-args = []
 restart_on_success = false
 restart_on_failure = true
 restart_on_terminate = true
@@ -21,5 +20,4 @@ args = ["-e", "env"]
 [[app]]
 name = "window manager"
 command = "twm"
-args = []
 hold = true