Epic #55070: Workpackages
Epic #55065: WP: Overall System Performance (Backend and Frontend)
Bug #52949: Speed decrease since 4.5
Bug #56307: Findings from Bootstrap/PackageManager/ClassLoader analyses
The PackageManager checks every boot if all required packages are active
The package manager checks in every initialize() if all required-extensions are active or activates them.
I would opt to trust that the PackageStates cache, put the list of required extensions there, too in order to define the constant.
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