anchor.diff:        url = "github:nix-community/home-manager";
         inputs.nixpkgs.follows = "nixpkgs";
       };
  -
  -    neovim-nightly-overlay = {
  -      url = "github:nix-community/neovim-nightly-overlay";
  -      inputs.nixpkgs.follows = "nixpkgs";
  -    };
     };
   
     outputs = inputs @
  
positive.code:         config = {
            allowUnfree = true;
          };
          overlays = [
            neovim-nightly-overlay.overlay
          ];
        };
  
        mkCommonConfig =
  
negative.code:   , darwin
    , flake-utils
    , home-manager
    , nixpkgs
    }:
      let
  