[MacPorts] #56377: Additions to the cargo PG for all cases

[MacPorts]

#56377: Additions to the cargo PG for all cases
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  Reporter:  MarcusCalhoun-Lopez                 |      Owner:  (none)
      Type:  enhancement                         |     Status:  new
  Priority:  Normal                              |  Milestone:
 Component:  ports                               |    Version:
Resolution:                                      |   Keywords:
      Port:  ripgrep fd mesalink ​racer librsvg  |
  cargo                                          |
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Comment (by MarcusCalhoun-Lopez):

 I have created a [https://github.com/macports/macports-ports/pull/1714
 pull request], which hopefully addresses most of the concerns.\\
 However, I was not able to get {{{OUT_DIR}}} working.

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Ticket URL: <https://trac.macports.org/ticket/56377#comment:2>
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