[MacPorts] #54156: port reclaim consumes gigabytes of memory

[MacPorts]

#54156: port reclaim consumes gigabytes of memory
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 Reporter:  mojca        |      Owner:
     Type:  enhancement  |     Status:  new
 Priority:  Normal       |  Milestone:
Component:  base         |    Version:
 Keywords:               |       Port:
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 During `Building list of distfiles still in use` the `port reclaim`
 consumes gigabytes of memory (well over 4 GB in my case) and takes forever
 to complete. Even after `Ctrl+C` it takes about a minute to actually
 finish.

 Could the implementation be slightly more optimised in that respect?

 Actually reclaim could even ask to remove all distfiles before counting
 them. Once the port is installed the user might no longer need it.

 (The period should be changed from two weeks to two months. Why would I
 need to run reclaim every two weeks? In the past I nearly never did it
 unless I was really really short on disk space.)

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Ticket URL: <https://trac.macports.org/ticket/54156>
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