args:
# execute and import all overlay files in the current directory with the given args
builtins.map (f: (import (./. + "/${f}") args)) # execute and import the overlay file

  (
    builtins.filter # find all overlay files in the current directory

      (
        f:
        f != "default.nix" # ignore default.nix
        && f != "README.md" # ignore README.md
      )
      (builtins.attrNames (builtins.readDir ./.))
  )
