data.cs.purdue.edu: fix incorrect username

flake.lock

@@ -645,11 +645,11 @@
     },
     "private": {
       "locked": {
-        "lastModified": 1692990855,
-        "narHash": "sha256-i1jX444WmMZQxAMG1+8Rf5eG6npQUKxLf53CltNwOfI=",
+        "lastModified": 1694228416,
+        "narHash": "sha256-SOOyLDp59C/EIGVffWmQaqRPAfRe65iuoF7SAHJTGnc=",
         "ref": "refs/heads/master",
-        "rev": "3c0dcbf97d4b328b3e9dd46c786c33255ab35c68",
-        "revCount": 29,
+        "rev": "20e1ca0293e29981155e28830ae82a77ea2a0497",
+        "revCount": 30,
         "type": "git",
         "url": "ssh://git@github.com/Infinidoge/universe-private"
       },

hosts/data.cs.purdue.edu/default.nix

@@ -1,4 +1,4 @@
-{ config, lib, pkgs, ... }:
+{ private, config, lib, pkgs, ... }:
 
 {
   modules.hardware.form.server = true;
@@ -8,6 +8,8 @@
     hostName = "data";
   };
 
+  user.name = private.variables.purdue-username;
+
   home = { ... }: {
     home.packages = with pkgs; [
       home-manager