[MacPorts] #45856: gnupg21: make new port, version 2.1.0

[MacPorts]

#45856: gnupg21: make new port, version 2.1.0
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  Reporter:  mschamschula@…  |      Owner:  ionic@…
      Type:  request         |     Status:  assigned
  Priority:  Low             |  Milestone:
 Component:  ports           |    Version:
Resolution:                  |   Keywords:
      Port:  gnupg21         |
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Comment (by ionic@…):

 It's even more complicated than that.

 GPG 2.1 and 1.x are incompatible, to the point that the new agent
 autospawning feature will not work with 1.x. GPG 1.x expects the
 environment variable `GPG_AGENT_INFO` to be set, which is deprecated in
 GPG 2.1, as the socket location is hardcoded and the agent being spawned
 automatically once a clients tries to connect to it.

 This is a known issue and is currently discussed upstream.

 I want to hold tight until this comes to some sort of consensus.

 Another issue is that the format of secret key storage changed. GPG 2.1
 will convert the old format to the new one, but this conversion is one-
 shot only. Should people use GPG 1.x in parallel, or even switch back to
 2.0, new keys will be saved in the "old" format/location and switching
 back to 2.1 will see those new keys missing.

 Really not a nice outlook there, which is why I haven't started working on
 a new Portfile yet.

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Ticket URL: <https://trac.macports.org/ticket/45856#comment:3>
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