[MacPorts] #55575: port -vst install fails with "/usr/bin/tar: No such file or directory"

[MacPorts]

#55575: port -vst install fails with "/usr/bin/tar: No such file or directory"
-----------------------+---------------------------------------
  Reporter:  janstary  |      Owner:  raimue
      Type:  defect    |     Status:  closed
  Priority:  Normal    |  Milestone:  MacPorts Future
 Component:  base      |    Version:  2.4.2
Resolution:  fixed     |   Keywords:  highsierra needs-backport
      Port:            |
-----------------------+---------------------------------------

Comment (by raimue):

 In [changeset:"b58d578a8e1aed0fa186ca059c337589a588e0af/macports-base"
 b58d578a8e1aed0fa186ca059c337589a588e0af/macports-base]:
 {{{
 #!ConfigurableCommitTicketReference repository="macports-base"
 revision="b58d578a8e1aed0fa186ca059c337589a588e0af"
 sip_copy_proc: Avoid COPYFILE_CLONE

 Apple broke the copyfile(3) interface with macOS 10.13.3 High Sierra as
 there is no way any more to make it follow symlinks when COPYFILE_CLONE
 is used. According to rdar://problem/36469208 this change was
 intentional.

 Instead of adding more conditionals to check whether the file to clone
 is actually a symlink, just do not attempt to clone it at all but make
 a normal copy. This will usually only take a few megabytes of disk space
 anyway.

 Closes: https://trac.macports.org/ticket/55575
 (cherry picked from commit 995dde8476c48580db4f6eedfde09e90dc5e8c99)
 }}}

--
Ticket URL: <https://trac.macports.org/ticket/55575#comment:14>
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