[MacPorts] #33820: base: add ui_msg to output outdated ports during selfupdate

[MacPorts]

#33820: base: add ui_msg to output outdated ports during selfupdate
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  Reporter:  sean.michael.farley@…  |      Owner:  macports-tickets@…
      Type:  enhancement            |     Status:  new
  Priority:  Normal                 |  Milestone:
 Component:  base                   |    Version:  2.0.4
Resolution:                         |   Keywords:  haspatch
      Port:                         |
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Comment (by sean@…):

 Replying to [comment:4 raimue@…]:
 > In my opinion, I don't think it's necessary to list outdated ports on
 self update.

 I dunno; I could see it either way. On one hand, it's nice to have a list
 of outdated ports after running `port sync` or `port selfupdate`.

 > Anyway, on technical details, using `exec` is not the right choice here.
 The package macports1.0 is meant as a library to be used by different
 clients, most notable port/port.tcl and the MacPorts.framework for GUI
 applications. We cannot always expect `port` to be in PATH for GUI
 applications, so at least it would have to be `${prefix}/bin/port`. It
 would make more sense to add such a message within the port cli client, as
 a GUI client has other options to present outdated ports than plain text
 messages. Additionally, the behavior and output from selfupdate and sync
 should be consistent.

 Very true; this patch was mostly meant as a proof-of-concept.

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Ticket URL: <https://trac.macports.org/ticket/33820#comment:5>
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