[MacPorts] #59445: restore_ports.tcl script fails with the error "infinite loop" (deps cycle)

[MacPorts]

#59445: restore_ports.tcl script fails with the error "infinite loop" (deps cycle)
---------------------+--------------------
  Reporter:  JDLH    |      Owner:  (none)
      Type:  defect  |     Status:  new
  Priority:  Normal  |  Milestone:
 Component:  base    |    Version:  2.6.2
Resolution:          |   Keywords:
      Port:          |
---------------------+--------------------

Comment (by JDLH):

 Sure enough, once I got past the problem of the `./restore_ports.tcl`
 script failing with an infinite loop, I discovered that `port install` got
 stuck trying to install ports `librsvg +viewer` and `adwaita-icon-theme`.
 I believe this is due to a dependency cycle between those ports.

 #59454 tracks the problem of a dependency cycle between `librsvg +viewer`
 and `adwaita-icon-theme`. Fixing that bug will resolve this ticket.

 It would be nice if the `restore_ports.tcl` script would give better
 information than merely "infinite loop", in the presence of a dependency
 cycle. It could print an additional message, "This may be due to a
 dependency cycle in the ports list.", after the "infinite loop" message.
 It could print a list of ports in $newList and their dependencies, to help
 the user determine which ports formed the cycle. It could even add code to
 detect a cycle (though really, the base would be a better place to detect
 and report cyles, as mentioned in #59289).

-- 
Ticket URL: <https://trac.macports.org/ticket/59445#comment:5>
MacPorts <https://www.macports.org/>
Ports system for macOS