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Andreas Sturmlechner
2455f4d303
Revdeps can drop dev-qt/* dependencies on version bumps at any time, which then may lead to Portage disregarding these dev-qt/* packages for upgrade if nothing is left depending on them. When these packages contain Qt5 plugins it breaks runtime hard - broken screenlocker, blank login manager, ... -, with: `Cannot mix incompatible Qt library (5.15.10) with this library (5.15.11)` We've had this happen with dev-qt/qtvirtualkeyboard and dev-qt/qtcharts already and gradual porting to Qt6 ensures it will happen more often in the future. Package groups (https://bugs.gentoo.org/918873) are not effective here as it concerns ::installed package set. For lack of a better mechanism from the package manager, these blockers make sure dep calculation will take care of the necessary cleanup of dangling Qt5 packages, even if it will not improve our backtracking situation. Signed-off-by: Andreas Sturmlechner <asturm@gentoo.org>