[MacPorts] #63710: "Unable to open port: can't read "universal_possible": no such variable" after upgrading to 2.7.1

[MacPorts]

#63710: "Unable to open port: can't read "universal_possible": no such variable"
after upgrading to 2.7.1
----------------------+--------------------
 Reporter:  singalen  |      Owner:  (none)
     Type:  defect    |     Status:  new
 Priority:  Normal    |  Milestone:
Component:  ports     |    Version:  2.7.1
 Keywords:            |       Port:
----------------------+--------------------
 On upgrade from 2.6.3 to 2.7.1 on MacOS 10.15, I ran port -f uninstall
 inactive, and got this:

 {{{
 $ sudo port upgrade outdated
 Error: Unable to open port: can't read "universal_possible": no such
 variable
 Error: Follow https://guide.macports.org/#project.tickets to report a bug.
 }}}

 Not sure how to diagnose if from here, I couldn't find if it's a problem
 in a specific package or somewhere else.

 {{{
 --->  Cleaning armadillo
 --->  Cleaning arora
 --->  Cleaning arowpp
 --->  Cleaning arp-scan
 Error: Unable to open port: can't read "universal_possible": no such
 variable
 }}}

-- 
Ticket URL: <https://trac.macports.org/ticket/63710>
MacPorts <https://www.macports.org/>
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