[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!
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  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                   |
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Comment (by jmroot):

 Well they all handle AV1, which does seem a bit redundant. Although, rav1e
 is only an encoder and dav1d is only a decoder. Looks like aom is both.

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Ticket URL: <https://trac.macports.org/ticket/62614#comment:7>
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