[MacPorts] #62614: Unable to Upgrade "libheif" on Lion -- Needs "rust" Which Only Builds on Yosemite or Later!

[MacPorts]

#62614: Unable to Upgrade "libheif" on Lion -- Needs "rust" Which Only Builds on
Yosemite or Later!
-------------------------+-------------------------------------------------
  Reporter:  RobK88      |      Owner:  MarcusCalhoun-Lopez
      Type:  defect      |     Status:  assigned
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:  2.6.4
Resolution:              |   Keywords:  tiger leopard snowleopard lion
      Port:  libheif     |  mountainlion mavericks
  rust                   |
-------------------------+-------------------------------------------------

Comment (by kencu):

 marcus added a bunch of deps here
 [70e4ce26e111e264197f037ad8f64297ac8de986/macports-ports] and I had to
 disable all of them to get builds on older systems working again.

 I haven't worked through yet which can be fixed and which can't.

-- 
Ticket URL: <https://trac.macports.org/ticket/62614#comment:2>
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