ff2mpv option is not showing when right clicking

[nyxar77]

Describe the bug

the normal behaviors i'm familiar with is when right clicking on a link or a video, mpv should show up as one of the options

Reproduction steps

Steps to reproduce the behavior:
i installed firefox using nix home-manager, and ff2mpv extension was installed from rycee repo

programs.firefox = {
  enable = true;
  nativeMessagingHosts = [pkgs.kdePackages.plasma-browser-integration pkgs.ff2mpv];
   profiles.user = {
      extensions = import ./extensions.nix {inherit pkgs lib;};
  };
};

and in extensions.nix

  packages = with pkgs.nur.repos.rycee.firefox-addons; [
    ff2mpv
];

that's what i did to manage firefox through nix, other services like keepassxc and plasma-integeration still works so i don't think the issue is home-manager but this iusse took place after the switch

Expected behavior

I expected the ff2mpv option to show up as one of the options

Screenshots (optional)

If applicable, add screenshots to help explain your problem.

Platform information

• OS information: Linux nixos 6.12.48 # 1-NixOS SMP PREEMPT_DYNAMIC Fri Sep 19 14:35:52 UTC 2025 x86_64 GNU/Linux
• Firefox version: Mozilla Firefox 142.0.1
• MPV version: v0.40.0 Copyright © 2000-2025 mpv/MPlayer/mplayer2 projects
• youtube-dl version: 2025.09.05

[DanSM-5]

There was a recent fix for a similar issue #135. Do you happen to know if ff2mpv from nix is using the latest release?

You can inspect the ff2mpv script using about:debugging and check if the script contains this function createContextMenuPromise

[BatteredBunny]

Im having the same issue. I looked into this and it seems that both the nix package and the extension downloaded from mozilla are missing that function.

https://addons.mozilla.org/en-US/firefox/addon/ff2mpv/ the page shows that the extension was last updated Nov 26, 2024 so its not exactly surprising its missing the function. There has not been a new release after the changes got merged.

Reinstalling the extension outside of the nur package (via mozilla store), the right click option now comes up though, im not sure why i didn't look into it.

[DanSM-5]

Yes, the fix got merged for #135 but seems that it wasn't released on the stores.

Reinstalling the extension outside of the nur package (via mozilla store), the right click option now comes up though, im not sure why i didn't look into it.

There is a race condition when the service worker creates the context menu entries, so sometimes it works fine but sometimes it does not create all context menu entries. As it is already fixed, all there is now is to wait till it gets released on the stores. For the nix package, I am not sure how it is updated but if it depends on the store then it also needs a new release.

[BatteredBunny]

For the nix package, I am not sure how it is updated but if it depends on the store then it also needs a new release.

Sadly it uses the .xpi file from mozilla store, does not build from source.

[woodruffw]

Yes, the fix got merged for #135 but seems that it wasn't released on the stores.

Yeah, I haven't done a release since last year. If this is a breaking issue, I can do a release containing #135 in the coming days.