[MacPorts] #51799: add a concept of 'distributions' for ports that work on specific older architectures

[MacPorts]

#51799: add a concept of 'distributions' for ports that work on specific older
architectures
-------------------------------------+--------------------------------
  Reporter:  kenneth.f.cunningham@…  |      Owner:  macports-tickets@…
      Type:  enhancement             |     Status:  new
  Priority:  Normal                  |  Milestone:
 Component:  base                    |    Version:  2.3.4
Resolution:                          |   Keywords:
      Port:                          |
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Comment (by kenneth.f.cunningham@…):

 I was thinking, without any changes in the current port base, even
 something like this in the portfile (in this example, the qt4-mac
 portfile) might go a long way towards alleviating wasted time and
 frustration...in a perfect world, this error would somehow lead to the
 appropriate Portfile revision being delivered into a personal repository
 on that machine, but as you point out, that is another entire matter
 entirely.


 {{{

 pre-fetch {
         if {${os.platform} eq "darwin" && ${os.major} <= 8} {
                 ui_error "Current versions of qt4-mac are not compatible
 with MacOSX Tiger or earlier."
                 ui_error "Please use revision 87272 for MacOSX Tiger."
                 ui_error "For instructions on how to do that, see
 <https://trac.macports.org/wiki/howto/InstallingOlderPort>."
                 error Incompatible_Version_for_OS
         }
 }
 }}}

-- 
Ticket URL: <https://trac.macports.org/ticket/51799#comment:6>
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