{ pkgs }:
let
  #hello = pkgs.hello.overrideAttrs { pname = "custom-hello"; };
  inherit (pkgs) hello;
  references = pkgs.runCommandNoCC "hello-refs" {
    exportReferencesGraph.hello = hello;
    __structuredAttrs = true;
    nativeBuildInputs = [ pkgs.jq ];
  } "jq -r \"{closure : .hello}\" < .attrs.json > $out"; # "jq -r '.hello' < .attrs.json > $out";
in
pkgs.testers.runNixOSTest (_: {
  name = "ingestion with tvix copy";
  nodes = {
    cache = {
      imports = [
        ./common
        ../modules
      ];

      system.extraDependencies = [
        hello
        references
      ];

      services.tvix-binary-cache = {
        enable = true;
        enableNginx = true;
        nginx = {
          clientMaxBodySize = "50G";
          host = "cache";
        };
        caches = {
          cache.port = 8000;
        };
      };

      networking.firewall.allowedTCPPorts = [ 80 ];
    };
  };
  testScript = ''
    import time
    start_all()
    cache.wait_for_unit("nginx.service")
    cache.wait_for_unit("nar-bridge-cache.service")
    time.sleep(1)
    socket_addr = "grpc+unix:///run/tvix-store-cache/socket"
    cache.succeed(f"BLOB_SERVICE_ADDR={socket_addr} DIRECTORY_SERVICE_ADDR={socket_addr} PATH_INFO_SERVICE_ADDR={socket_addr} tvix-store copy ${builtins.toString references}")
  '';
})