diff --git a/hosts/data.cs.purdue.edu/default.nix b/hosts/data.cs.purdue.edu/default.nix
index 14bcac1..70b4cf6 100644
--- a/hosts/data.cs.purdue.edu/default.nix
+++ b/hosts/data.cs.purdue.edu/default.nix
@@ -24,6 +24,8 @@
 
       sessionVariables = {
         TMPDIR = "${config.home.homeDirectory}/scratch/tmp";
+        UNIVERSE_FLAKE_ROOT = "${config.home.homeDirectory}/universe";
+        UNIVERSE_USERNAME = config.home.username;
       };
 
       file.".profile".target = ".profile-hm";