nix-community.nixvim/flake-modules/overlays.nix

{inputs, ...}: {
  imports = [
    inputs.flake-parts.flakeModules.easyOverlay
  ];
  perSystem = {
    config,
    pkgs,
    final,
    ...
  }: {
    overlayAttrs = {
      nixvim = {
        inherit
          (config.legacyPackages)
          makeNixvim
          makeNixvimWithModule
          ;
      };
    };
  };
}