port diagnose on new catalina install says Xcode 12.1 not supported

[Ryan Schmidt]

On Nov 8, 2020, at 11:12, Ken Cunningham wrote:

> new install on a catalina system, then run port selfupdate, and then port diagnose:
> 
> % sudo port -v  diagnose    
> Error: currently installed version of Xcode, 12.1, is not supported by MacPorts.  For your currently installed system, only the following versions of Xcode are supported:  11.6 11.5 11.4.1 11.4 11.3.1 11.3
> 


Then we should add 12.1 (and 12 and 11.7) to the list of supported versions. There are three places this needs to be done, every time a new version of Xcode is released.