cli: init with template

devenv/src/cli.rs

@@ -182,7 +182,11 @@ impl GlobalOptions {
 #[derive(Subcommand, Clone)]
 pub enum Commands {
     #[command(about = "Scaffold devenv.yaml, devenv.nix, .gitignore and .envrc.")]
-    Init { target: Option<PathBuf> },
+    Init {
+        target: Option<PathBuf>,
+        #[arg(long, help = "Use template")]
+        template: Option<String>,
+    },
 
     #[command(about = "Generate devenv.yaml and devenv.nix using AI")]
     Generate {

devenv/src/cnix.rs

@@ -241,6 +241,13 @@ impl<'a> Nix<'a> {
         Ok(())
     }
 
+    pub async fn init(&self, template: &String) -> Result<()> {
+        self.run_nix("nix", &["flake", "init", "-t", &template], &self.options)
+            .await?;
+
+        Ok(())
+    }
+
     pub async fn metadata(&self) -> Result<String> {
         let options = Options {
             cache_output: true,

devenv/src/devenv.rs

@@ -145,7 +145,12 @@ impl Devenv {
         self.devenv_dotfile.join("processes.pid")
     }
 
-    pub fn init(&self, target: &Option<PathBuf>) -> Result<()> {
+    pub async fn init(&self, target: &Option<PathBuf>, template: &Option<String>) -> Result<()> {
+        if let Some(template) = template {
+            self.nix.init(template).await?;
+            return Ok(());
+        }
+
         let target = target
             .clone()
             .unwrap_or_else(|| fs::canonicalize(".").expect("Failed to get current directory"));

devenv/src/main.rs

@@ -131,7 +131,7 @@ async fn main() -> Result<()> {
             };
             Ok(())
         }
-        Commands::Init { target } => devenv.init(&target),
+        Commands::Init { target, template } => devenv.init(&target, &template).await,
         Commands::Generate {
             description,
             host,