feat: Add serial mode with single root job (#120)

* feat: serial_mode with single root job

* exit on task failure

* ops module

* Remove unnecessary params

* refactor: add exec_builder to CommandActor

* feat: fewer fields in CommandActor

src/actors/watcher.rs

@@ -5,20 +5,21 @@ use ignore::gitignore::GitignoreBuilder;
 use notify::event::ModifyKind;
 use notify::{recommended_watcher, Event, EventKind, RecommendedWatcher, RecursiveMode, Watcher};
 use std::collections::HashSet;
-use std::path::PathBuf;
+use std::path::{Path, PathBuf};
+use std::sync::Arc;
 
 use super::command::{CommandActor, Reload};
 
 pub struct WatcherActor {
     watcher: Option<RecommendedWatcher>,
     globs: Vec<WatchGlob>,
-    base_dir: PathBuf,
+    base_dir: Arc<Path>,
     // List of file paths to ignore on the watcher
     ignore: HashSet<PathBuf>,
 }
 
 impl WatcherActor {
-    pub fn new(base_dir: PathBuf) -> Self {
+    pub fn new(base_dir: Arc<Path>) -> Self {
         Self {
             watcher: None,
             globs: Vec::default(),

src/args.rs

@@ -18,6 +18,12 @@ pub struct Graph {
     pub boxed: bool,
 }
 
+#[derive(Parser, Debug, Clone)]
+pub struct Execute {
+    #[arg()]
+    pub task: String,
+}
+
 /// Set of subcommands.
 #[derive(Subcommand, Debug)]
 pub enum Command {
@@ -27,6 +33,9 @@ pub enum Command {
     Graph(Graph),
     /// List all the jobs set in the config file
     ListJobs,
+    /// Execute a specific job; running its dependencies serially
+    #[command(name = "x")]
+    Execute(Execute),
 }
 
 #[derive(Parser, Debug)]