[MacPorts] #63694: mpv: fatal error encountered while reading from module 'Foundation'

[MacPorts]

#63694: mpv: fatal error encountered while reading from module 'Foundation'
---------------------------+------------------------
  Reporter:  ShadSterling  |      Owner:  i0ntempest
      Type:  defect        |     Status:  assigned
  Priority:  Normal        |  Milestone:
 Component:  ports         |    Version:  2.7.1
Resolution:                |   Keywords:
      Port:  mpv           |
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Comment (by Gandoon):

 Replying to [comment:26 ShadSterling]:
 > It looks like MacPorts is building for macOS versions ending in ".0";
 I'm running macOS 11.6, and after downgrading from Xcode 13.1 to Xcode
 12.5.1 I see a lot of warnings about files "built for newer macOS version
 (11.2) than being linked (11.0)"

 Yet another reason to ''not'' downgrade on behalf of one singular macport
 that fails consistently whilst all others work perfectly


 > It also looks like Xcode only ever ships with an SDK for one version of
 macOS, which sometimes is a higher version than the host OS - as was the
 case when my macOS 11.6 was updated to Xcode 13.1 which has the SDK for
 macOS 12.0

 This is not strictly true, they do push out the Xcode and SDK for one
 version up, so that people can start developing for the upcoming system,
 hence 12.4 being the Xcode that is pushed out to MacOS 10.15 (the one you
 get if you download it from the Apple).

 >
 > I would think it would be possible to add SDKs for each target version
 of macOS (especially the host version), but my quick search didn't turn up
 anything about how to do that

 I may be wrong, but I think there may be some provisions for doing that
 from within Xcode (target system settings), but I am not sure if that is
 the issue here.

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Ticket URL: <https://trac.macports.org/ticket/63694#comment:28>
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