emacs-overlay.url = "github:nix-community/emacs-overlay";

    emacs-overlay = {
      url = "github:nix-community/emacs-overlay";
      inputs.nixpkgs.follows = "nixpkgs";
    };

    ,
    }@inputs: {

    }@inputs: rec {

      overlays = [ emacs-overlay ];

      system = "x86_64-linux";
      overlays = [ emacs-overlay.overlay ];

        system = "x86_64-linux";

        inherit system;

                { nixpkgs.overlays = self.overlays; }

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

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

    binaryCaches = [ "https://cache.nixos.org/" ];

    binaryCaches = [
      "https://cache.nixos.org/"
      "https://nix-community.cachix.org"
    ];
    binaryCachePublicKeys = [
      "nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs="
    ];

  nixpkgs.overlays = [
    (import inputs.emacs-overlay)
  ];

    emacsPackage = pkgs.emacsPgtkGcc;