grpc-gateway: fix version output

{ buildGoModule, fetchFromGitHub, lib }:

{ buildGoModule, fetchFromGitHub, lib, testers, grpc-gateway }:

buildGoModule rec {

  pname = "grpc-gateway";

  vendorHash = "sha256-no7kZGpf/VOuceC3J+izGFQp5aMS3b+Rn+x4BFZ2zgs=";

  ldflags = [

    "-X=main.version=${version}"

    "-X=main.date=1970-01-01T00:00:00Z"

    "-X=main.commit=unknown"

  ];

  passthru.tests = {

    version = testers.testVersion {

      package = grpc-gateway;

      command = "protoc-gen-grpc-gateway --version";

      version = "Version ${version}, commit unknown, built at 1970-01-01T00:00:00Z";

    };

    openapiv2Version = testers.testVersion {

      package = grpc-gateway;

      command = "protoc-gen-openapiv2 --version";

      version = "Version ${version}, commit unknown, built at 1970-01-01T00:00:00Z";

    };

  };

  meta = with lib; {

    description =

      "A gRPC to JSON proxy generator plugin for Google Protocol Buffers";