[MacPorts] #70917: port migrate/restore enhancement request

[MacPorts]

#70917: port migrate/restore enhancement request
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  Reporter:  pietvo       |      Owner:  (none)
      Type:  enhancement  |     Status:  new
  Priority:  Normal       |  Milestone:
 Component:  base         |    Version:
Resolution:               |   Keywords:
      Port:               |
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Changes (by jmroot):

 * component:  ports => base


Comment:

 The snapshots are stored in the registry database, and can be edited with
 sqlite3 in a pinch. There is also as yet unreleased JSON export and import
 functionality. TBH, if you have figured out which variant you want to
 disable to break a dependency cycle, it may be easiest to edit the
 Portfile and temporarily remove or rename the variant.

 Programmatically detecting dependency cycles and then systematically
 toggling variants on and off to try to break them is not impossible, but
 it would add quite a lot of complexity. There's no guarantee that there is
 even a possible solution in all cases, and the choice of where exactly to
 break the cycle would be have to be arbitrary unless the user is
 consulted, and they may not know either.

 All in all, both circular dependencies and build-time conflicts are pretty
 terrible and it would be far preferable if ports avoided them (however
 realistic or otherwise that expectation may be…)

-- 
Ticket URL: <https://trac.macports.org/ticket/70917#comment:1>
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