diff --git a/os-mods/common/default.nix b/os-mods/common/default.nix
index a2a8a6d..a79b49a 100644
--- a/os-mods/common/default.nix
+++ b/os-mods/common/default.nix
@@ -3,8 +3,21 @@
 , pkgs
 , inputs
 , system
+, self
 , ...
-}: {
+}:
+let
+  commitid =
+    if (self ? shortRev)
+    then self.shortRev
+    else "dirty";
+in
+{
+  system.image = {
+    id = "tristnix";
+    version = commitid;
+  };
+  # system.nixos.tags = [ "tristnix_${commitid}" ];
   nixpkgs.hostPlatform = lib.mkDefault system;
 
   nix = {