{
  config,
  pkgs,
  lib,
  font,
  ...
}:
let
  inherit (config.my) desktop browser;
in
{
  config = {
    programs.firefox = {
      enable = true;
      package = pkgs.firefox-devedition;
      profiles = {
        dev-edition-default = {
          isDefault = true;
          search.force = true;
          search.default = "DuckDuckGo";
          settings = {
            "devtools.theme" = "auto";
            "toolkit.legacyUserProfileCustomizations.stylesheets" = true;
            "browser.tabs.inTitlebar" = if desktop == "sway" then 0 else 1;
            "sidebar.position_start" = false; # Move sidebar to the right

            # enable media RDD to allow gpu acceleration
            "media.rdd-ffmpeg.enabled" = true;
            "media.rdd-ffvpx.enabled" = true;
            "media.rdd-opus.enabled" = true;
            "media.rdd-process.enabled" = true;
            "media.rdd-retryonfailure.enabled" = true;
            "media.rdd-theora.enabled" = true;
            "media.rdd-vorbis.enabled" = true;
            "media.rdd-vpx.enabled" = true;
            "media.rdd-wav.enabled" = true;

            "media.av1.enabled" = true;
            "media.ffmpeg.vaapi-drm-display.enabled" = true;
            "media.ffmpeg.vaapi.enabled" = true;
            "media.ffvpx.enabled" = true;

            "gfx.webrender.all" = true;

            # Enable installing non signed extensions
            "extensions.langpacks.signatures.required" = false;
            "xpinstall.signatures.required" = false;

            "browser.aboutConfig.showWarning" = false;

            # Enable userChrome editor (Ctrl+Shift+Alt+I)
            "devtools.chrome.enabled" = true;
            "devtools.debugger.remote-enabled" = true;
          };
          userChrome =
            if desktop == "sway" then
              ''
                #titlebar { display: none !important; }
                #sidebar-header { display: none !important; }
              ''
            else
              ''
                /* Hide tabs and other items */
                .toolbar-items {
                  display: none;
                }

                /* Make the url bar occupy the entire size of the container */
                #nav-bar {
                  z-index: 1;
                  padding-right: 29px !important;
                }

                /* shrink the tab bar to a small size, since it's only the window close button basically */
                #titlebar {
                  position: absolute;
                  right: 0;
                  top: 10px;
                  max-width: 50px;
                  z-index: 10;
                }

                /* Add a nice border to the top of the window */
                #nav-bar {
                  border-top-left-radius: 10px;
                  border-top-right-radius: 10px;
                }

                /* Make the private browser indicator look nice, over the close-window button */
                #private-browsing-indicator-with-label {
                  position: absolute;
                  top: 4px;
                  left: 15px;
                  z-index: 20;
                  pointer-events: none;
                }

                #private-browsing-indicator-with-label > label {
                  display: none;
                }
              '';
        };
      };
    };
    wayland.windowManager.sway = {
      extraConfig = ''
        exec firefox
      '';
    };
    home.sessionVariables = {
      MOZ_ENABLE_WAYLAND = "1";
      MOZ_DISABLE_RDD_SANDBOX = "1";
    };
  };
}