[MacPorts] #44066: qalculate-gtk: configure: error: XML::Parser perl module is required for intltool

[MacPorts]

#44066: qalculate-gtk: configure: error: XML::Parser perl module is required for
intltool
----------------------------+-------------------------
  Reporter:  audvare@…      |      Owner:  jjstickel@…
      Type:  defect         |     Status:  new
  Priority:  Normal         |  Milestone:
 Component:  ports          |    Version:  2.3.0
Resolution:                 |   Keywords:
      Port:  qalculate-gtk  |
----------------------------+-------------------------

Comment (by cal@…):

 That looks like an outdated version of MacPorts. This variable didn't
 exist in versions lower than 2.3.0. Please check (using `port version`)
 that your MacPorts installation is up to date (i.e., 2.3.1). It it isn't,
 run selfupdate. If that doesn't work, see wiki:FAQ#selfupdatefails, use
 the installer for 2.3.1, or post the output of `sudo port -d selfupdate`.

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Ticket URL: <https://trac.macports.org/ticket/44066#comment:7>
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