[MacPorts] #52588: mercurial 3.9.1 error: 'swift_name' attribute cannot be applied

[MacPorts]

#52588: mercurial 3.9.1 error: 'swift_name' attribute cannot be applied
------------------------+--------------------------------
  Reporter:  rgacote@…  |      Owner:  macports-tickets@…
      Type:  defect     |     Status:  new
  Priority:  Normal     |  Milestone:
 Component:  ports      |    Version:  2.3.4
Resolution:             |   Keywords:
      Port:  mercurial  |
------------------------+--------------------------------

Comment (by rgacote@…):

 Confirmed that latest XCode is installed. Ray xcode-select --install and
 it said it was already installed.
 Tried xcode-select --reset and then rebuild. Same problem.
 Also confirmed that I've run XCode so the license is accepted.

-- 
Ticket URL: <https://trac.macports.org/ticket/52588#comment:2>
MacPorts <https://www.macports.org/>
Ports system for the Mac operating system