32 lines
1.7 KiB
Plaintext
32 lines
1.7 KiB
Plaintext
# Address several issues with DBus activation and systemd user sessions
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#
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# 1. DBus-activated and systemd services do not share the environment with user
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# login session. In order to make the applications that have GUI or interact
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# with the compositor work as a systemd user service, certain variables must
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# be propagated to the systemd and dbus.
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# Possible (but not exhaustive) list of variables:
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# - DISPLAY - for X11 applications that are started as user session services
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# - WAYLAND_DISPLAY - similarly, this is needed for wayland-native services
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# - I3SOCK/SWAYSOCK - allow services to talk with sway using i3 IPC protocol
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#
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# 2. `xdg-desktop-portal` requires XDG_CURRENT_DESKTOP to be set in order to
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# select the right implementation for screenshot and screencast portals.
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# With all the numerous ways to start sway, it's not possible to rely on the
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# right value of the XDG_CURRENT_DESKTOP variable within the login session,
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# therefore the script will ensure that it is always set to `sway`.
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#
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# 3. GUI applications started as a systemd service (or via xdg-autostart-generator)
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# may rely on the XDG_SESSION_TYPE variable to select the backend.
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# Ensure that it is always set to `wayland`.
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#
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# 4. The common way to autostart a systemd service along with the desktop
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# environment is to add it to a `graphical-session.target`. However, systemd
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# forbids starting the graphical session target directly and encourages use
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# of an environment-specific target units. Therefore, the integration
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# package here provides and uses `sway-session.target` which would bind to
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# the `graphical-session.target`.
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#
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# 5. Stop the target and unset the variables when the compositor exits.
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#
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exec $exedir/session.sh
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