librewolf: defaults to google search engine

[cafkafk]

Copied from #338439.

Describe the bug

Default search engine is Google instead of DuckDuckGo.

Steps To Reproduce

1. Delete ~/.librewolf
2. Start LW browser

Expected behavior

Default search should be DDG, and google shouldn't even be available, per https://librewolf.net/docs/faq/#how-do-i-add-a-search-engine

Screenshots

Additional context

Notify maintainers

@dotlambda @squalus

Metadata

Tested using 33b95d0

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[colons]

this is concerning to me. not only is google the default search engine, but it has autocomplete enabledm too (edit: this is not (currently?) true). much of the value of librewolf is its default configuration; if that's not being applied, what else might be missing?

the problem isn't wrapFirefox as far as i can tell; this still happens with librewolf-unwrapped

[bittner]

I install the DuckDuckGo extension system-wide, which makes this problem go away for now. I have to do this using programs.firefox, though, because for Librewolf installing extensions apparently can only be done using Home Manager.

Solution approach (click to expand)

{ pkgs, ... }:

{
  environment.systemPackages = with pkgs; [
    librewolf
  ];

  programs.firefox = {
    enable = true;

    policies = {
      DisableTelemetry = true;
      DisableFirefoxStudies = true;
      Preferences = {
        "browser.startup.page" = 3; # Open tabs from last session
        "cookiebanners.service.mode.privateBrowsing" = 2; # Block cookie banners in private browsing
        "cookiebanners.service.mode" = 2; # Block cookie banners
        "privacy.donottrackheader.enabled" = true;
        "privacy.fingerprintingProtection" = true;
        "privacy.resistFingerprinting" = true;
        "privacy.trackingprotection.emailtracking.enabled" = true;
        "privacy.trackingprotection.enabled" = true;
        "privacy.trackingprotection.fingerprinting.enabled" = true;
        "privacy.trackingprotection.socialtracking.enabled" = true;
      };
      ExtensionSettings = {
        "jid1-ZAdIEUB7XOzOJw@jetpack" = {
          install_url = "https://addons.mozilla.org/firefox/downloads/latest/duckduckgo-for-firefox/latest.xpi";
          installation_mode = "force_installed";
        };
        "[email protected]" = {
          install_url = "https://addons.mozilla.org/firefox/downloads/latest/ublock-origin/latest.xpi";
          installation_mode = "force_installed";
        };
      };
    };
  };
}

Note that this also installs Firefox. That's part of the game, unfortunately.