{ flake, ... }:

let
  inherit (flake) inputs;
  inherit (inputs) self;

  pkgsDir = ../packages; # This must be absolute or relative to this file

  # List only subdirs with default.nix
  packageDirs = builtins.filter (name: builtins.pathExists (pkgsDir + "/${name}/default.nix")) (
    builtins.attrNames (builtins.readDir pkgsDir)
  );

in
self: super:
builtins.listToAttrs (
  map (name: {
    name = name;
    value = self.callPackage (pkgsDir + "/${name}") { };
  }) packageDirs
)