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docs: drop link to obsolete multiseat page

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We link to the man page which replaced this historical document right above,
so just drop the whole paragraph.
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Zbigniew Jędrzejewski-Szmek 2024-05-28 14:40:54 +02:00
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commit bdc965253c
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docs/WRITING_DISPLAY_MANAGERS.md
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@ -33,8 +33,6 @@ Minimal porting (without multi-seat) requires the following:
The former should contain "seat0", the latter the VT number your session runs on. pam_systemd can determine these values automatically but it's nice to pass these variables anyway.
In summary: porting a display manager from ConsoleKit to systemd primarily means removing code, not necessarily adding any new code. Here, a cheers to simplicity!
Complete porting (with multi-seat) requires the following (Before you continue, make sure to read up on [Multi-Seat on Linux](https://www.freedesktop.org/wiki/Software/systemd/multiseat) first.):
1. Subscribe to seats showing up and going away, via the systemd-logind D-Bus interface's SeatAdded and SeatRemoved signals.
Take possession of each seat by spawning your greeter on it.
However, do so exclusively for seats where the boolean CanGraphical property is true.