[MacPorts] #59228: base upgrade fails if Xcode license not accepted

[MacPorts]

#59228: base upgrade fails if Xcode license not accepted
------------------------+--------------------
 Reporter:  EJFielding  |      Owner:  (none)
     Type:  defect      |     Status:  new
 Priority:  Normal      |  Milestone:
Component:  ports       |    Version:  2.6.1
 Keywords:              |       Port:
------------------------+--------------------
 I ran a port selfupate for the first time in a while, and it tried
 unsuccessfully to install the base upgrade to version 2.6.1. It turned out
 that MacOS had also updated the Xcode to v11.1 on this Mojave machine, and
 I had not accepted the license again, so the base version upgrade failed
 silently. Then it gave me an error message when I tried to do the port
 upgrade outdated.
 {{{
 fielding% sudo port selfupdate:
 --->  Updating MacPorts base sources using rsync
 MacPorts base version 2.5.4 installed,
 MacPorts base version 2.6.1 downloaded.
 --->  Updating the ports tree
 --->  MacPorts base is outdated, installing new version 2.6.1
 Installing new MacPorts release in /opt/local as root:wheel; permissions
 0755

 fielding% sudo port selfupdate
 --->  Updating MacPorts base sources using rsync
 MacPorts base version 2.5.4 installed,
 MacPorts base version 2.6.1 downloaded.
 --->  Updating the ports tree
 --->  MacPorts base is outdated, installing new version 2.6.1
 Installing new MacPorts release in /opt/local as root:wheel; permissions
 0755

 fielding% sudo port upgrade outdated
 Error: Unable to open port: can't set "compiler.blacklist": invalid
 command name "compiler.command_line_tools_version"
 Error: Follow https://guide.macports.org/#project.tickets to report a bug.
 }}}

 I was able to solve this by accepting the Xcode license and re-running the
 port selfupdate again, and then port upgrade outdated.

 I think it is a bug that the port selfupdate did not report that it was
 unable to run Xcode and upgrade the base version.

-- 
Ticket URL: <https://trac.macports.org/ticket/59228>
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