[MacPorts] #40013: Create port for py-quantities

[MacPorts]

#40013: Create port for py-quantities
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  Reporter:  smithsp@…      |      Owner:  macports-tickets@…
      Type:  submission     |     Status:  new
  Priority:  Normal         |  Milestone:
 Component:  ports          |    Version:
Resolution:                 |   Keywords:
      Port:  py-quantities  |
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Comment (by smithsp@…):

 Replying to [comment:3 g5pw@…]:
 > Since the tag on github starts with the letter 'v', you should add a 'v'
 at the end of the github.setup line as the optional argument (take a look
 in {{{_resources/port1.0/groups/github.1.0.tcl}}})
 >
 > Strangely enough, your checksums are wrong for me. Could you recheck
 them?

 I'm sorry.  I think that I made the mistake of assuming that the checksums
 would be the same for the two methods of fetching (from PyPi or from
 github).  I will attach the updated Portfile, which I have just retested.

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Ticket URL: <https://trac.macports.org/ticket/40013#comment:5>
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