diff --git a/home/profile.nix b/home/profile.nix
index ef8be539..d14f39c4 100644
--- a/home/profile.nix
+++ b/home/profile.nix
@@ -159,6 +159,12 @@ in {
 
     # enable passwordless sudo
     security.sudo.wheelNeedsPassword = false;
+
+    # enable access in build-vm
+    virtualisation.vmVariant = {
+      users.users.koishi.password = "passwd";
+      users.users.koishi.hashedPasswordFile = mkForce null;
+    };
   };
 
   # this is for home components that need to extend nixos