[MacPorts] #66552: Add a variant that supports 'persist'

[MacPorts]

#66552: Add a variant that supports 'persist'
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  Reporter:  esbugz       |      Owner:  (none)
      Type:  enhancement  |     Status:  new
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:
Resolution:               |   Keywords:
      Port:  opendoas     |
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Description changed by esbugz:

Old description:

> As far as I understand from the dev comment below, the `persist` option
> is unsupported by default and has to be enabled at build time
>
> Would you please add such a variant?
>
> [https://github.com/Duncaen/OpenDoas/issues/32]
> {{{
> This has to be enabled explicitly at build time by running configure with
> --with-timestamp, the gentoo build doesn't do that.
> }}}

New description:

 As far as I understand from the dev's comment below, the `persist` option
 is unsupported by default and has to be enabled at build time

 Would you please add such a variant?

 [https://github.com/Duncaen/OpenDoas/issues/32]
 {{{
 This has to be enabled explicitly at build time by running configure with
 --with-timestamp, the gentoo build doesn't do that.
 }}}

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Ticket URL: <https://trac.macports.org/ticket/66552#comment:1>
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