Give a clue that you have to relaunch Hyprland for new envs to get picked up

config/hypr/hyprland.conf

@@ -44,6 +44,7 @@ bind = SUPER SHIFT, X, exec, $webapp="https://x.com/compose/post"
 # exec-once = dropbox-cli start
 
 # Extra env variables
+# Note: You must relaunch Hyprland after changing envs (use Super+Esc, then Relaunch)
 # env = MY_GLOBAL_ENV,setting
 
 # Control your input devices