Add the userInfo variable to the system-wide home-manager

lib/configuration.nix

@@ -44,6 +44,10 @@
           if (configPath != null)
           then {
             ${username} = { pkgs, ... }@args: import configPath ({
+              userInfo = {
+                name = username;
+              } // user;
+
               userConfig = {
                 inherit hostname username;
               } // user;