{ pkgs ? import <nixpkgs> {},
  charFilters ? true,
  find-parent ? true,
  galleryHelpers ? true,
  nd ? true
}@inputs:

let
  inherit (pkgs) lib stdenv;

  deps = with pkgs;
    (lib.filterAttrs (k: v: inputs.${k} or true) {
      galleryHelpers = [ rakudo ];
      charFilters    = [ rakudo ];
      find-parent    = [ execline ];
      nd             = [ execline ];
    });

  dir = d:
    let path = ./niss-misc/${d}; in
    lib.fileset.toSource { root = path; fileset = path; };
in
  assert lib.assertMsg (nd -> find-parent) "nd depends on find-parent";

  stdenv.mkDerivation {
    name = "niss-misc";

    buildInputs = lib.concatLists (lib.attrValues deps);

    dontUnpack = true;

    installPhase = lib.concatStringsSep "\n"
      ([ "mkdir -p $out/bin" ] ++
       map (d: "cp ${dir d}/* $out/bin") (lib.attrNames deps) ++
       [ "chmod a+x $out/bin/*" ]);

    meta.description = "niss's funny little scripts";
  }