[MacPorts] #58638: port:youtube-dl : upgrade and performance improvement

[MacPorts]

#58638: port:youtube-dl : upgrade and performance improvement
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 Reporter:  RJVB         |      Owner:  ryandesign
     Type:  enhancement  |     Status:  assigned
 Priority:  Normal       |  Milestone:
Component:  ports        |    Version:
 Keywords:  haspatch     |       Port:  youtube-dl
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 This started out when I noticed that `youtube-dl` is a zipped "script
 bundle" which means that it has to be inflated and byte-compiled on each
 and every invocation. That takes a noticeable amount of time, even on a
 faster machine. Testing shows that startup time becomes roughly 4x shorter
 when you install the application as a regular, uncompressed set of python
 scripts, of which bytecode can be cached.

 The patch introduces a +unpacked variant which creates such an install. It
 takes a post-destroot approach, inflating the actual script, in order to
 ensure that the exact same code will be executed. In-app upgrades are
 impossible with this kind of install so there is no need to disable them
 via a hack.

 I propose to drop the compulsory use of a MacPorts Python interpreter; the
 system one does just fine. The proposed +stock variant creates an install
 that is the pure stock version. I see no hard reason to ban in-app
 upgrades for such an install (the script will replace itself), leaving a
 backdoor for people who somehow need the latest versions *now*.

 The upgrade to the current version is almost an afterthought :)

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Ticket URL: <https://trac.macports.org/ticket/58638>
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