hydra ifd fixes

systems/selinunte/stylix.nix

@@ -1,12 +1,24 @@
-{ pkgs, lib, ... }:
-# Disable stylix in Hydra builds where allow-import-from-derivation is disabled
-# This is safe because desktop theming isn't needed for CI/CD builds
+{
+  pkgs,
+  lib,
+  config,
+  ...
+}:
+# Disable stylix in restricted evaluation contexts (like Hydra)
+# where allow-import-from-derivation is disabled.
+# Desktop theming isn't needed for CI/CD builds anyway.
 let
-  inHydraBuild = builtins.getEnv "HYDRA_ID" != "";
+  # Check if we're in a restricted evaluation context
+  # In restricted eval, builtins.currentTime throws an error
+  isRestricted =
+    let
+      try = builtins.tryEval builtins.currentTime;
+    in
+    !try.success;
 in
 {
   stylix = {
-    enable = !inHydraBuild;
+    enable = !isRestricted;
     image = "${pkgs.hyprland}/share/hypr/wall2.png";
 
     #image = "/home/alice/Pictures/Screenshots/screenshot_2024-12-04-2030.png";