
Having `display-manager` conflict with `plymouth-quit` causes this lock up: - `plymouth-quit-wait` starts up, waiting for plymouth-quit to run - `lightdm` starts up - `plymouth-quit` can't start, it conflicts with lightdm - `plymouth-quit-wait` keeps waiting on plymouth-quit to kill plymouthd The idea is having LightDM control when plymouth quits, but communication with plymouth was broken: https://github.com/NixOS/nixpkgs/pull/71064 Unfortunately having the conflict breaks switching to configurations with plymouth enabled. So we still need to remove the conflict. fixes #71034
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