fix (home/helix): default to light, no systemd service

home/home.nix

@@ -77,7 +77,7 @@
       enable = true;
       defaultEditor = true;
       settings = {
-        theme = "adwaita-dark";
+        theme = "adwaita-light";
         editor = {
           lsp.display-messages = true;
           inline-diagnostics.cursor-line = "info";
@@ -160,6 +160,42 @@
     videos = "${config.home.homeDirectory}/vid";
   };
 
+  # systemd.user.services.helix-theme = {
+  #   Unit = {
+  #     Description = "Helix System Colour Scheme Synchronisation Service";
+  #     Documentation = "https://github.com/helix-editor/helix/issues/2158";
+  #     After = "gnome-session.target";
+  #   };
+  #   Install.WantedBy = [ "gnome-session.target" ];
+  #   Service = {
+  #     Type = "simple";
+  #     RestartSec = 5;
+  #     Restart = "always";
+  #     ExecStart =
+  #       let
+  #         update-script = pkgs.writeShellScript "helix-theme-update" ''
+  #           #!/bin/sh
+  #           set -eu -o pipefail
+
+  #           if [ "$1" = "default" ]; then
+  #             sed -i 's/theme = ".*"/theme = "adwaita-light"/' \
+  #               $HOME/.config/helix/config.toml
+  #           else
+  #             sed -i 's/theme = ".*"/theme = "adwaita-dark"/' \
+  #               $HOME/.config/helix/config.toml
+  #           fi
+
+  #           killall -s SIGUSR1 hx
+  #         '';
+  #       in
+  #       "${pkgs.writeShellScript "helix-theme-monitor" ''
+  #         #!/bin/sh
+  #         gsettings monitor org.gnome.desktop.interface color-scheme \
+  #           | xargs -L1 bash -c "source ${update-script}"
+  #       ''}";
+  #   };
+  # };
+
   dconf.settings = {
     "org/gnome/TextEditor" = {
       keybindings = "vim";