[MacPorts] #56959: librsvg: building requires rust compiler

[MacPorts]

#56959: librsvg: building requires rust compiler
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  Reporter:  07151129     |      Owner:  dbevans
      Type:  enhancement  |     Status:  assigned
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:
Resolution:               |   Keywords:
      Port:  librsvg      |
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Changes (by mf2k):

 * type:  defect => enhancement


Comment:

 We generally don't allow variants to change the installed version. What is
 normally done is to create a sub-port with the older version.

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Ticket URL: <https://trac.macports.org/ticket/56959#comment:3>
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