desktop-fix.nix

{ config, pkgs, lib, ... }:
{
  programs.bash.profileExtra = lib.mkAfter ''
    rm -rf ${config.home.homeDirectory}/.local/share/applications/home-manager
    rm -rf ${config.home.homeDirectory}/.icons/nix-icons
    ls ${config.home.homeDirectory}/.nix-profile/share/applications/*.desktop > ${config.home.homeDirectory}/.cache/current_desktop_files.txt
  '';
  home.activation = {
    linkDesktopApplications = {
      after = ["writeBoundary" "createXdgUserDirectories"];
      before = [];
      data = ''
        rm -rf ${config.home.homeDirectory}/.local/share/applications/home-manager
        rm -rf ${config.home.homeDirectory}/.icons/nix-icons
        mkdir -p ${config.home.homeDirectory}/.local/share/applications/home-manager
        mkdir -p ${config.home.homeDirectory}/.icons
        ln -sf ${config.home.homeDirectory}/.nix-profile/share/icons ${config.home.homeDirectory}/.icons/nix-icons

        # Check if the cached desktop files list exists
        if [ -f ${config.home.homeDirectory}/.cache/current_desktop_files.txt ]; then
          current_files=$(cat ${config.home.homeDirectory}/.cache/current_desktop_files.txt)
        else
          current_files=""
        fi

        # Symlink new desktop entries
        for desktop_file in ${config.home.homeDirectory}/.nix-profile/share/applications/*.desktop; do
          if ! echo "$current_files" | grep -q "$(basename $desktop_file)"; then
            ln -sf "$desktop_file" ${config.home.homeDirectory}/.local/share/applications/home-manager/$(basename $desktop_file)
          fi
        done

        # Update desktop database
        ${pkgs.desktop-file-utils}/bin/update-desktop-database ${config.home.homeDirectory}/.local/share/applications
      '';
    };
  };
}