[MacPorts] #44509: selfupdate tried to tell me to run selfupdate again

[MacPorts]

#44509: selfupdate tried to tell me to run selfupdate again
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  Reporter:  dave@…  |      Owner:  macports-tickets@…
      Type:  defect  |     Status:  new
  Priority:  Normal  |  Milestone:
 Component:  ports   |    Version:  2.3.1
Resolution:          |   Keywords:  selfupdate
      Port:          |
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Comment (by dave@…):

 MacPorts could write out a tiny trampoline program to /tmp,
 make it unwritable then setuid root,
 exec it,
 then it execs (the new) MacPorts,
 which deletes the trampoline program
 and continues.
 Code to do this is probably in a library somewhere, or it should be.

 This trick would not only solve the problem posed in this report, but it
 would allow selfupdate to become an option, not a command to be run by
 itself and waited for.

 Seems like a minor price to pay for a better user experience, no?

 Many apps on the Mac can update themselves. Firefox, for one.

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Ticket URL: <https://trac.macports.org/ticket/44509#comment:2>
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