default.nix

self: super:

let
  pkgs = path:
    let content = builtins.readDir path; in
      builtins.listToAttrs
      map (n: v: {name = n; value = import (path + ("/" + n)); })
        (builtins.filter (n: builtins.pathExists (path + ("/" + n + "/default.nix")))
          (builtins.attrNames content));

  myPkgs = pkgs ../pkgs;
in
myPkgs // {
  # other overlay code goes here
}