{
  charts,
  haumea,
  lib,
  pkgs,
  user,
} @ inputs: let
  mk = import src/mk.nix inputs;
in {
  mkDerivation = {
    pname,
    version,
    src,
    serviceRoot,
    nsMetadata ? {},
    kubeVersion ? pkgs.kubernetes.version,
    apiVersions ? [],
  }: let
    services = mk.services {inherit serviceRoot kubeVersion apiVersions;};
  in
    pkgs.stdenv.mkDerivation {
      inherit pname version src;
      derivation_paths = services.paths;
      namespace_drv = mk.namespaces {
        inherit (services) namespaces;
        extraMetadata = nsMetadata;
      };

      buildInputs = [pkgs.kustomize];
      phases = ["installPhase"];
      installPhase = builtins.readFile src/output.sh;
    };
}