(Fix): spawnSession now calls SetBasicVariables, SetDisplay, SetSessionParams, SetSeatVars, SetSessionVars, and SetXDGCommonPaths before spawning the desktop. fixes setupX failing immediately with missing DISPLAY/XDG_VTNR/HOME env vars because none were set

src/main.go

@@ -156,6 +156,16 @@ func spawnSession(res *login.Result) error {
 		return fmt.Errorf("pam session: %w", err)
 	}
 
+	session.SetBasicVariables(creds.Username, creds.HomeDir, creds.Shell, res.Config.InitialPath)
+	if res.Env.Kind == "x11" {
+		session.SetDisplay(res.Config.X11.Display)
+	}
+	session.RemoveXDG()
+	session.SetSessionParams(res.Env.Kind)
+	session.SetSeatVars(res.Config.TTY)
+	session.SetSessionVars(creds.UID)
+	session.SetXDGCommonPaths(creds.HomeDir)
+
 	sess, err := session.Spawn(&res.Env, creds.UID, creds.PrimaryGID, creds.AllGIDs, &res.Config)
 	if err != nil {
 		return fmt.Errorf("spawn: %w", err)