flake: reformat with nixfmt

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

@@ -1,4 +1,10 @@
-{ private, config, lib, pkgs, ... }:
+{
+  private,
+  config,
+  lib,
+  pkgs,
+  ...
+}:
 
 {
   modules.hardware.form.server = true;
@@ -14,40 +20,45 @@
 
   home-manager.useUserPackages = false;
 
-  home = { main, config, ... }: {
-    home = {
-      username = lib.mkForce private.variables.purdue-username;
+  home =
+    { main, config, ... }:
+    {
+      home = {
+        username = lib.mkForce private.variables.purdue-username;
 
-      packages = with pkgs; [
-        home-manager
-      ] ++ main.universe.packages;
+        packages =
+          with pkgs;
+          [
+            home-manager
+          ]
+          ++ main.universe.packages;
 
-      inherit (main.universe) shellAliases;
+        inherit (main.universe) shellAliases;
 
-      sessionVariables = {
-        TMPDIR = "${config.home.homeDirectory}/scratch/tmp";
-        UNIVERSE_FLAKE_ROOT = "${config.home.homeDirectory}/universe";
-        UNIVERSE_USERNAME = main.user.name;
-        SHELL = "zsh";
+        sessionVariables = {
+          TMPDIR = "${config.home.homeDirectory}/scratch/tmp";
+          UNIVERSE_FLAKE_ROOT = "${config.home.homeDirectory}/universe";
+          UNIVERSE_USERNAME = main.user.name;
+          SHELL = "zsh";
+        };
+
+        file.".profile".target = ".profile-hm";
+
+        homeDirectory = lib.mkForce "/homes/${config.home.username}";
       };
 
-      file.".profile".target = ".profile-hm";
-
-      homeDirectory = lib.mkForce "/homes/${config.home.username}";
+      nix.settings = {
+        inherit (main.nix.settings)
+          auto-optimise-store
+          experimental-features
+          fallback
+          flake-registry
+          keep-derivations
+          keep-outputs
+          min-free
+          sandbox
+          use-xdg-base-directories
+          ;
+      };
     };
-
-    nix.settings = {
-      inherit (main.nix.settings)
-        auto-optimise-store
-        experimental-features
-        fallback
-        flake-registry
-        keep-derivations
-        keep-outputs
-        min-free
-        sandbox
-        use-xdg-base-directories
-        ;
-    };
-  };
 }