Single transaction ens deployment example, circular reference?

[steveruckdashel]

I'm attempting to deploy ENS to a private network. I'm running into issues with the documented process for using a single transaction deploy. I'm curious if there's something minor I'm missing or if the example needs to be tweaked slightly?

Here's a link to the documentation section I'm using: https://github.com/ensdomains/docs/blob/master/deploying-ens-on-a-private-chain.md#deploying-ens-in-a-single-transaction

Here's the relevant error output:

$MYPATH/contracts/TestDependancies.sol:6:1: DeclarationError: Identifier already declared.
import "@ensdomains/resolver/contracts/PublicResolver.sol";
^---------------------------------------------------------^
@ensdomains/ens/contracts/ReverseRegistrar.sol:5:1: The previous declaration is here:
contract NameResolver {
^ (Relevant source part starts here and spans across multiple lines).

Compilation failed. See above.
Truffle v5.0.13 (core: 5.0.13)
Node v14.2.0

Contract text:

pragma solidity ^0.5.0;

import "@ensdomains/ens/contracts/ENSRegistry.sol";
import "@ensdomains/ens/contracts/FIFSRegistrar.sol";
import "@ensdomains/ens/contracts/ReverseRegistrar.sol";
import "@ensdomains/resolver/contracts/PublicResolver.sol";

// Construct a set of test ENS contracts.
contract TestDependencies {
  bytes32 constant TLD_LABEL = keccak256("eth");
  bytes32 constant RESOLVER_LABEL = keccak256("resolver");
  bytes32 constant REVERSE_REGISTRAR_LABEL = keccak256("reverse");
  bytes32 constant ADDR_LABEL = keccak256("addr");

  ENSRegistry public ens;
  FIFSRegistrar public fifsRegistrar;
  ReverseRegistrar public reverseRegistrar;
  PublicResolver public publicResolver;

  function namehash(bytes32 node, bytes32 label) public pure returns (bytes32) {
    return keccak256(abi.encodePacked(node, label));
  }

  constructor() public {
    ens = new ENSRegistry();
    publicResolver = new PublicResolver(ens);

    // Set up the resolver
    bytes32 resolverNode = namehash(bytes32(0), RESOLVER_LABEL);

    ens.setSubnodeOwner(bytes32(0), RESOLVER_LABEL, address(this));
    ens.setResolver(resolverNode, address(publicResolver));
    publicResolver.setAddr(resolverNode, address(publicResolver));

    // Create a FIFS registrar for the TLD
    fifsRegistrar = new FIFSRegistrar(ens, namehash(bytes32(0), TLD_LABEL));

    ens.setSubnodeOwner(bytes32(0), TLD_LABEL, address(fifsRegistrar));

    // Construct a new reverse registrar and point it at the public resolver
    reverseRegistrar = new ReverseRegistrar(ens, Resolver(address(publicResolver)));

    // Set up the reverse registrar
    ens.setSubnodeOwner(bytes32(0), REVERSE_REGISTRAR_LABEL, address(this));
    ens.setSubnodeOwner(namehash(bytes32(0), REVERSE_REGISTRAR_LABEL), ADDR_LABEL, address(reverseRegistrar));
  }
}

[xiaoyue2019]

I encountered the same problem, how to solve it

[xiaoyue2019]

为了部署我注释了反向注册功能