[MacPorts] #59289: base does not necessarily tell you when circular dependency occurs

[MacPorts]

#59289: base does not necessarily tell you when circular dependency occurs
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  Reporter:  fvaccari  |      Owner:  jmroot
      Type:  defect    |     Status:  closed
  Priority:  Normal    |  Milestone:  MacPorts 2.7.0
 Component:  base      |    Version:
Resolution:  fixed     |   Keywords:
      Port:            |
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Comment (by cooljeanius):

 Replying to [comment:18 JDLH]:
 > Does this fix improve the clarity of error messages from
 `restore_ports.tcl`, when the list of ports to restore have a circular
 dependency?  If so, then this fix might also help #59445.

 If it does, then the pull request I opened to address that might no longer
 be necessary: https://github.com/macports/macports-contrib/pull/10

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Ticket URL: <https://trac.macports.org/ticket/59289#comment:19>
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