The Plugin Dependencies feature saves a list of any plugins that have been disabled due to unmet dependencies to a transient in order to give user feedback in the admin about what has taken place. This ensures that the DB operations to write this transient is skipped if there are no dependent plugins to deactivate.
Props joemcgill, costdev, afragen.
Fixes#60518.
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Introduces a new "Requires Plugins" plugin header so that plugin developers can list the slugs of the plugins theirs depends on.
This will inform users of the requirements, and provide links to the WordPress.org Plugins Repository that they can click to install and activate the dependencies first.
Plugins whose requirements are not met cannot be installed or activated, and they will be deactivated automatically if their requirements become unmet.
Plugins that others rely on cannot be deactivated or deleted until their dependent plugins are deactivated or deleted.
In memory of Alex Mills and Alex King.
WordPress Remembers.
Props ahoereth, afragen, alanfuller, alexkingorg, amykamala, anonymized_10690803, apeatling, ashfame, atimmer, audrasjb, aristath, azaozz, batmoo, beaulebens, blobaugh, bobbingwide, boonebgorges, brianhenryie, chanthaboune, chrisdavidmiles, coolmann, costdev, courane01, danielbachhuber, davidperez, dd32, Denis-de-Bernardy, dingo_d, DJPaul, dougal, DrewAPicture, ethitter, filosofo, georgestephanis, giuseppemazzapica-1, goldenapples, griffinjt, hellofromTonya, husobj, ideag, jarednova, jbobich, jbrinley, jltallon, joedolson, johnciacia, johnjamesjacoby, joppuyo, jsmoriss, karmatosed, kebbet, knutsp, kraftbj, kraftner, kurtpayne, lkraav, logikal16, luisherranz, man4toman, markjaquith, matt, mbijon, megphillips91, mikeschinkel, mordauk, morehawes, mrwweb, mte90, mukesh27, mzaweb, nacin, norcross, nvwd, nwjames, obliviousharmony, ocean90, oglekler, paaljoachim, pauldewouters, pbaylies, pbiron, peterwilsoncc, Philipp15b, poena, pogidude, retlehs, rmccue, ryan, sabreuse, sc0ttkclark, scribu, sereedmedia, SergeyBiryukov, ShaneF, shidouhikari, soean, spacedmonkey, stephenh1988, swissspidy, taylorde, tazotodua, threadi, TimothyBlynJacobs, TJNowell, tollmanz, toscho, tropicalista, Viper007Bond, westi, whiteshadow, williamsba1, wpsmith, ZaneMatthew.
Fixes#22316.
Built from https://develop.svn.wordpress.org/trunk@57545
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