What version of Xcode for High Sierra?

[Dave Horsfall]

MacBook Pro, 13", mid-2010, 8GB memory (self-supplied, as the default 4GB 
is simply not enough), firmware 7,1.

Relevance to MacPorts: it needs Xcode...

There seems to be many versions of Xcode for High Sierra (I don't want to 
upgrade further just yet) so which one is known to work for this thing so 
that I can start using MacPorts again??  I don't want to waste a few hours 
of download (including Command Line Tools) only to see "xcode-select" spit 
the dummy because it's the wrong version of the OS or something.

Thanks.

-- Dave