"mod-xslt.com is for sale" There's a http://www.mod-xslt2.com but I don't think it's the same project
Not much we could do here.
You can remove the wrong url from the ebuild.
And replace it with what? There is no correct URL, but it cannot be blank.
Yeah, I didn't find any homepage for this particular fork we are using. There's plenty of others, but not any homepage for this one.
What is the meaning of leaving a wrong URL in an ebuild? What do you use for package without a website? I don't think this is the only one. Maybe you could use www.gentoo.org