light-locker: segmentation fault (core dumped)

[SirWalross]

Running NixOS 24.05:

light-locker instantly segmentation faults after launching it, with no further information:

$ light-locker --debug

[gs_debug_init] ../src/gs-debug.c:106 (19:24:36):   Debugging enabled
[main] ../src/light-locker.c:138 (19:24:36):    initializing light-locker 1.9.0
[main] ../src/light-locker.c:139 (19:24:36):    Platform:
gtk:        3
systemd:    yes
UPower:     yes
[main] ../src/light-locker.c:155 (19:24:36):    Features:
lock-after-screensaver: yes
late-locking:           yes
lock-on-suspend:        yes
lock-on-lid:            yes
settings backend:       GSETTINGS
[main] ../src/light-locker.c:188 (19:24:36):    lock after screensaver 10
[main] ../src/light-locker.c:189 (19:24:36):    late locking 0
[main] ../src/light-locker.c:190 (19:24:36):    lock on suspend 0
[main] ../src/light-locker.c:191 (19:24:36):    lock on lid 1
[main] ../src/light-locker.c:192 (19:24:36):    idle hint 0
[init_session_id] ../src/gs-listener-dbus.c:2054 (19:24:36):    Got session-id: /org/freedesktop/login1/session/_32
[init_session_id] ../src/gs-listener-dbus.c:2064 (19:24:36):    Got sd-session-id: 2
[init_seat_path] ../src/gs-listener-dbus.c:2145 (19:24:36): Got seat: /org/freedesktop/DisplayManager/Seat0
[1]    21622 segmentation fault (core dumped)  light-locker --debug

Any suggestions appreciated!