{
  description = "Templates Helm deployments using Nix";

  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs";
    flake-utils.url = "github:numtide/flake-utils";
    haumea = {
      url = "github:nix-community/haumea/v0.2.2";
      inputs.nixpkgs.follows = "nixpkgs";
    };

    nix-kube-generators.url = "github:farcaller/nix-kube-generators";
    nixhelm = {
      url = "github:farcaller/nixhelm";
      inputs.nixpkgs.follows = "nixpkgs";
    };
  };

  outputs = inputs @ {
    self,
    nixpkgs,
    haumea,
    flake-utils,
    nix-kube-generators,
    nixhelm,
  }:
    flake-utils.lib.eachDefaultSystem (system: let
      pkgs = import nixpkgs {inherit system;};
      kubelib = nix-kube-generators.lib {inherit pkgs;};
      lib = import ./lib {inherit charts haumea kubelib pkgs;};

      # TODO: remove after work
      user = import ./user {
        inherit pkgs;
        turboprop = {inherit lib;};
      };

      charts =
        pkgs.lib.attrsets.recursiveUpdate
        nixhelm.chartsDerivations.${system}
        (lib.mkCharts ./charts);
    in {
      packages = {
        inherit charts lib user;
        default = user:
          import ./src {
            inherit charts haumea lib pkgs user;
          };
        uhh =
          (import ./src {
            inherit charts haumea lib pkgs user;
          })
        .mkDerivation {
          pname = "test-turboprop";
          version = "0.0.1";
          serviceRoot = ./services;
          nsMetadata = import ./namespaces.nix;
          kubeVersion = pkgs.kubernetes.version;
          src = builtins.path {
            path = ./.;
            name = "test-turboprop";
          };
        };
      };
      # TODO: make a template
      formatter = pkgs.alejandra;
    });
}