Code shared from run.dlang.io. Run with '-i -run test.d'

main.d

--- test.d
module test;
import libweb;

import std;
void main()
{
    writeln("test");
    runClient();
    runServer();
    runConv();
    runText();
}

--- libweb/package.d
module libweb;
public import libweb.client;
public import libweb.server;
public import libweb.utils;

--- libweb/client.d
module libweb.client;
void runClient() {  import std; writeln("runClient"); }

--- libweb/server.d
module libweb.server;
void runServer() { import std; writeln("runServer");  }

--- libweb/utils/package.d
module libweb.utils;
public import libweb.utils.conv;
public import libweb.utils.text;

--- libweb/utils/conv.d
module utils.conv;
void runConv() { import std; writeln("runConv"); }

--- libweb/utils/text.d
module utils.text;
void runText() { import std; writeln("runText"); }