[wp-trac] [WordPress Trac] #56057: Add conditional to WP_Upgrader::install_package() for Rollback testing

[WordPress Trac]

#56057: Add conditional to WP_Upgrader::install_package() for Rollback testing
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 Reporter:  afragen          |       Owner:  SergeyBiryukov
     Type:  feature request  |      Status:  reopened
 Priority:  normal           |   Milestone:  6.1
Component:  Upgrade/Install  |     Version:  trunk
 Severity:  normal           |  Resolution:
 Keywords:  has-patch early  |     Focuses:
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Comment (by afragen):

 It seems that `install_package()` fires much before this hook. We need to
 prevent the `copy_dir()` in `install_package()` from firing except for
 when we want.

 Not sure we can utilize this hook.

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Ticket URL: <https://core.trac.wordpress.org/ticket/56057#comment:15>
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