title: Conditional imports golang
body: <p>I am quite new with Go, and I am struggling to import a package only if it exists. Is there a way to do this? I tried with "_" before the package name, but if the package does not exist the program won't compile. I am aware that I could be on the wrong road, but how else should I treat this case in which I want to import a package only if it exists?</p>