Added support for simple sessions

src/gather.rs

@@ -53,7 +53,7 @@ pub fn gather_sessions(user: &User) -> Vec<Session> {
         false => vec![Session {
             name: String::from("Shell"),
             generation: user.shell.to_str().unwrap().to_owned(),
-            env: vec![],
+            env: vec![String::from("NIXGREETY_SIMPLE=1")],
         }],
     }
 }

src/session.rs

@@ -9,6 +9,15 @@ use std::{
 use crate::fs::resolve_link;
 
 pub fn handle_session() -> io::Result<()> {
+    match env::var("NIXGREETY_SIMPLE") {
+        Ok(_) => handle_simple_session(),
+        Err(_) => handle_hm_session(),
+    }
+
+    Ok(())
+}
+
+fn handle_hm_session() {
     println!(">>> Activating environment <<<");
     let generation = env::var("NIXGREETY_GENERATION").unwrap();
     Command::new(format!("{}/activate", generation))
@@ -48,6 +57,11 @@ pub fn handle_session() -> io::Result<()> {
     Command::new(format!("{}/activate", generation.display()))
         .status()
         .unwrap();
-
-    Ok(())
+}
+
+fn handle_simple_session() {
+    let generation = env::var("NIXGREETY_GENERATION").unwrap();
+    Command::new(&generation)
+        .status()
+        .expect("Failed to create session");
 }