Fix zsh (OMZ+carapace), GTK dark mode, waybar styling

home/sam/home.nix

@@ -26,6 +26,12 @@ home.stateVersion = "25.11";
 
   programs.home-manager.enable = true;
 
+
+dconf.settings."org/gnome/desktop/interface" = {
+  color-scheme = "prefer-dark";
+};
+
+
   # ---
   # Shell (zsh + oh-my-zsh + powerlevel10k)
   # ---
@@ -53,6 +59,10 @@ home.stateVersion = "25.11";
       if [ -f "$HOME/.config/zsh/local.zsh" ]; then
     source "$HOME/.config/zsh/local.zsh"
   fi
+      # carapace completions
+    if command -v carapace >/dev/null 2>&1; then
+      eval "$(carapace _carapace zsh)"
+    fi
     '';
   };
 
@@ -89,7 +99,7 @@ home.stateVersion = "25.11";
   # Packages (NOW list + a few safe essentials)
   # ---
   home.packages = with pkgs; [
-
+    carapace
   aider-chat
 opencode
 goose-cli