In reply to @crtified:crtified.me
Probably qt.platformTheme: https://github.com/nix-community/home-manager/blob/master/modules/misc/qt.nix#L54

In reply to @dariof4:matrix.org
yep it's this one, and to be more specific I think it fails while evaluating the file since it specifes pkgs.qt6packages.qt6ct, so even if you don't touch the option it fails

In reply to @adham-omran:matrix.org
So, in this case what should I do?

On the nixos wiki I see the following for overlays

overlays."<name>" = final: prev: { };
overlays.default = { };

Are the types of these two the same?

On the nixos wiki for flakes I see the following for overlays

overlays."<name>" = final: prev: { };
overlays.default = { };

Are the types of these two the same?

In reply to @twitchy0:matrix.org

On the nixos wiki for flakes I see the following for overlays

overlays."<name>" = final: prev: { };
overlays.default = { };

Are the types of these two the same?

From the wiki:

sops-nix = {
      url = "github:Mic92/sops-nix";
      # The `follows` keyword in inputs is used for inheritance.
      # Here, `inputs.nixpkgs` of sops-nix is kept consistent with the `inputs.nixpkgs` of
      # the current flake, to avoid problems caused by different versions of nixpkgs.
      inputs.nixpkgs.follows = "nixpkgs";
    };

In reply to @emilazy:matrix.org
any way to do nix flake check only for the current system?