system/modules/home-manager/programs/editors/neovim.nix

{ config, pkgs, lib, ... }:

let cfg = config.local.programs.editors.neovim; in
{
  options.local.programs.editors.neovim = with lib; {
    enable = mkEnableOption "neovim";
    defaultEditor = mkOption {
      description = "set neovim as default editor";
      type = types.bool;
      default = false;
    };
    ltex.enable = mkEnableOption "ltex language server";
  };

  config = lib.mkIf cfg.enable (lib.mkMerge [
    (lib.mkIf cfg.ltex.enable {
      home.packages = [ pkgs.ltex-ls ];
    })

    (lib.mkIf cfg.defaultEditor {
      home.sessionVariables.EDITOR = "nvim";
    })
  ]);
}