[MacPorts] #71123: aalib fails to build against current ncurses: aacurses.c: error: dereferencing pointer to incomplete type

[MacPorts]

#71123: aalib fails to build against current ncurses: aacurses.c: error:
dereferencing pointer to incomplete type
---------------------------+--------------------
  Reporter:  barracuda156  |      Owner:  (none)
      Type:  defect        |     Status:  new
  Priority:  Normal        |  Milestone:
 Component:  ports         |    Version:  2.10.2
Resolution:                |   Keywords:
      Port:  aalib         |
---------------------------+--------------------

Comment (by ryandesign):

 This software is from 2001. It accesses ncurses struct fields directly.
 Some time ago, ncurses started making its structures opaque. The aalib
 Portfile tries to tell ncurses to allow access to these opaque structs by
 defining `NCURSES_OPAQUE` to `0`. However, ncurses 6.5, released in 2024,
 makes the `WINDOW` struct opaque and `NCURSES_OPAQUE` does not seem to
 have any effect anymore. To continue to be able to compile this software,
 it will have to be rewritten to avoid accessing struct fields directly.
 Maybe there is already a patch available from another distribution.

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Ticket URL: <https://trac.macports.org/ticket/71123#comment:2>
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