{ self, nixpkgs, ... }:
let 
    forAllSystems = nixpkgs.lib.genAttrs [ "x86_64-linux" ];
    nixpkgsFor = forAllSystems (system: import nixpkgs { inherit system; });

in forAllSystems(system: let pkgs = nixpkgsFor.${system}; in {
    
    example = pkgs.callPackage ./example {};

    netgen = pkgs.callPackage ./netgen {};
   
})