nixos-config/user/firefox.nix

{ config, pkgs, lib, font, ... }:
let inherit (pkgs.uservars) desktop browser;
  bugfixedFirefox = pkgs.firefox-esr-unwrapped // { requireSigning = false; allowAddonSideload = true; };
in {
  config = {
    programs.firefox = {
      enable = true;
      package = pkgs.wrapFirefox bugfixedFirefox {
        nixExtensions = [
          (pkgs.fetchFirefoxAddon {
            name = "darkreader";
            url = "https://addons.mozilla.org/firefox/downloads/file/4205543/darkreader-4.9.73.xpi";
            hash = "sha256-fDmf8yVhiGu4Da0Mr6+PYpeSsLcf8e/PEmZ+BaKzjxo=";
          })
          (pkgs.fetchFirefoxAddon {
            name = "sponsorblock";
            url = "https://addons.mozilla.org/firefox/downloads/file/4202411/sponsorblock-5.4.29.xpi";
            hash = "sha256-7Xqc8cyQNylMe5/dgDOx1f2QDVmz3JshDlTueu6AcSg=";
          })
          (pkgs.fetchFirefoxAddon {
            name = "tree-style-tab";
            url = "https://addons.mozilla.org/firefox/downloads/file/4197314/tree_style_tab-3.9.19.xpi";
            hash = "sha256-u2f0elVPj5N/QXa+5hRJResPJAYwuT9z0s/0nwmFtVo=";
          })
          (pkgs.fetchFirefoxAddon {
            name = "ublock-origin";
            url = "https://addons.mozilla.org/firefox/downloads/file/4198829/ublock_origin-1.54.0.xpi";
            hash = "sha256-l5cWCQgZFxD/CFhTa6bcKeytmSPDCyrW0+XjcddZ5E0=";
          })
          (pkgs.fetchFirefoxAddon {
            name = "vimium_ff";
            url = "https://addons.mozilla.org/firefox/downloads/file/4191523/vimium_ff-2.0.6.xpi";
            hash = "sha256-lKLX6IWWtliRdH1Ig33rVEB4DVfbeuMw0dfUPV/mSSI=";
          })
          (pkgs.fetchFirefoxAddon {
            name = "unhook";
            url = "https://addons.mozilla.org/firefox/downloads/file/4050795/youtube_recommended_videos-1.6.2.xpi";
            hash = "sha256-xMuglNassZb9WqjfEGg6WeuhMACRuYqQor+iX1dEdsE=";
          })
          (pkgs.fetchFirefoxAddon {
            name = "mastodon_simplified_federation";
            url = "https://addons.mozilla.org/firefox/downloads/file/4215691/mastodon_simplified_federation-2.2.xpi";
            hash = "sha256-4iU25chpjsdsMTPaa0yQOTWc9V9q1qFz6YV0lYtNjLA=";
          })
        ];
      };
      profiles = {
        main = {
          isDefault = true;
          settings = {
            "devtools.theme" = "auto";
            "toolkit.legacyUserProfileCustomizations.stylesheets" = true;
            "browser.tabs.inTitlebar" = if desktop == "sway" then 0 else 1;

            # 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" = false;
            "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 = lib.mkIf (desktop == "sway") ''
            #titlebar { display: none !important; }
            #sidebar-header { display: none !important; }
          '';
        };
      };
    };
    wayland.windowManager.sway = {
      extraConfig = ''
        exec firefox
      '';
    };
    home.sessionVariables = {
      MOZ_ENABLE_WAYLAND = "1";
      MOZ_DISABLE_RDD_SANDBOX = "1";
    };
  };
}