[MacPorts] #70997: Warning: Unnecessary platforms line as darwin is the default

[MacPorts]

#70997: Warning: Unnecessary platforms line as darwin is the default
-------------------------+--------------------
  Reporter:  ryandesign  |      Owner:  (none)
      Type:  defect      |     Status:  new
  Priority:  Normal      |  Milestone:
 Component:  base        |    Version:  2.10.1
Resolution:              |   Keywords:
      Port:              |
-------------------------+--------------------

Comment (by Dave-Allured):

 This warning was added to base a few months ago.  I think it is
 unnecessary and makes extra work and confusion.  It also is contradictory
 to the guidelines in the [https://guide.macports.org/#development
 .creating-portfile port development chapter] of the Macports guide.

 It is fine to have a default of "platforms darwin", and to not require it
 for new work.  However, that is no reason to purge the platform line in
 existing ports, just because it was made into a default.

 Here is a [https://github.com/macports/macports-base/pull/358 PR to simply
 remove the warning].  This reverts a small part of the
 [https://github.com/macports/macports-
 base/commit/5297f1cebe34b6e635fee0aeed507e54330fbe25 original commit,
 several months ago].

 What do others think?  @pguyot?

-- 
Ticket URL: <https://trac.macports.org/ticket/70997#comment:2>
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