[MacPorts] #55652: Cannot destroot libtool 2.4.6_4

[MacPorts]

#55652: Cannot destroot libtool 2.4.6_4
----------------------+----------------------
  Reporter:  M-Rick   |      Owner:  larryv
      Type:  defect   |     Status:  assigned
  Priority:  Normal   |  Milestone:
 Component:  ports    |    Version:  2.4.2
Resolution:           |   Keywords:
      Port:  libtool  |
----------------------+----------------------

Comment (by kencu):

 We saw this error when a user had installed his own version of python in a
 non-MacPorts fashion. It confused python and it couldn't find system-
 installed resources any longer. I can't find the ticket where we worked
 through this right now -- perhaps it was on the mailing list? It was
 within the last few months, after libtool was changed to strip out these
 attributes using xattr.

 The failing command is here:
 {{{
 xattr -r -d com.dropbox.attributes
 /private/opt/usr/var/macports/build/_private_opt_usr_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_devel_libtool/libtool/work/destroot
 }}}
 try running the command manually, using `sudo`. I think that was where we
 got some more clues about the issue.

 Do you have a manually-installed python somewhere, outside of MacPorts?

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Ticket URL: <https://trac.macports.org/ticket/55652#comment:3>
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