How to install X2Go on CentOS server?

I found its about setting up X2go repository file:
wget -O /etc/yum.repos.d/x2go.repo http://packages.x2go.org/epel/x2go.repo

then install:
yum install x2goserver

But it says:

Error: Package: x2goserver-4.0.1.19-0.0x2go2.1.git20160126.1064.main.el6.x86_64 (x2go-release-epel)
Requires: pwgen
What is the way out? When "--skip-broken" is used, it is interupted with many problems: "Packages skipped because of dependency problems:"