[MacPorts] #65809: py-nbconvert @7.0.0: install fails, due to build-time artifact fetch

[MacPorts]

#65809: py-nbconvert @7.0.0: install fails, due to build-time artifact fetch
---------------------------+----------------------
  Reporter:  agl2015       |      Owner:  mascguy
      Type:  defect        |     Status:  assigned
  Priority:  Normal        |  Milestone:
 Component:  ports         |    Version:  2.7.2
Resolution:                |   Keywords:
      Port:  py-nbconvert  |
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Comment (by mascguy):

 Replying to [comment:11 mascguy]:
 > While that would be nice, the reality is that arbitrary artifacts
 shouldn't be fetched by the build script. Particularly not if we're
 interested in #ReproducibleBuilds.

 In case you or anyone else isn't aware of it, there have also been recent
 reports of bad actors introducing spyware and viruses in some Python
 components. And this is yet another reason to avoid arbitrary,
 uncontrolled downloads via build scripts.

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Ticket URL: <https://trac.macports.org/ticket/65809#comment:12>
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