bug: kitty: setting kitty.font.package causes kitty to crash

[donottellmetonottellyou]

Are you following the right branch?

• My Nixpkgs and Home Manager versions are in sync

Is there an existing issue for this?

• I have searched the existing issues

Issue description

With this config...

      font = {
        package = pkgs.nerd-fonts.fira-code;
        name = "FiraCode Nerd Font";
        size = 12;
      };

...kitty will simply fail to launch on 25.05. This is not an issue with 24.11.

I am using FiraCode as a system font, so in my case I can remove the package attribute. Doing this fixes the crash.

Maintainer CC

@khaneliman

System information

- system: `"x86_64-linux"`
 - host os: `Linux 6.12.30, NixOS, 25.05 (Warbler), 25.05.802491.7c43f080a7f2`
 - multi-user?: `yes`
 - sandbox: `yes`
 - version: `nix-env (Nix) 2.28.3`
 - channels(root): `"home-manager-25.05.tar.gz, nixos-25.05, nixos-unstable, nixpkgs-donottellmetonottellyou"`
 - nixpkgs: `/nix/store/d0gkkdlqbd27j94malk85bqi1qircfia-nixos-25.05/nixos`

[donottellmetonottellyou]

Might be caused by upstream changes. Kitty already has a dependency on nerd-fonts?

[nixos-discourse]

This issue has been mentioned on NixOS Discourse. There might be relevant details there:

https://discourse.nixos.org/t/kitty-crash-on-launch-on-25-05/64467/2