"Switching into this system is not recommended" message due to dbus implementation change

[alexvorobiev]

Bug description

After updating the flake the new system configuration is not activated:

There are changes to critical components of the system:

dbus-implementation : dbus -> broker

Switching into this system is not recommended.

To Reproduce

nix flake update
nixos-rebuild  --flake /home/alex/nix-config#wsl switch -L

Logs

Checking switch inhibitors...
There are changes to critical components of the system:

dbus-implementation : dbus -> broker

Switching into this system is not recommended.
You probably want to run 'nixos-rebuild boot' and reboot your system instead.

If you really want to switch into this configuration directly, then
you can set NIXOS_NO_CHECK=1 to ignore pre-switch checks.

WARNING: doing so might cause the switch to fail or your system to become unstable.

Pre-switch check 'switchInhibitors' failed
Pre-switch checks failed
Command 'systemd-run -E LOCALE_ARCHIVE -E NIXOS_INSTALL_BOOTLOADER -E NIXOS_NO_CHECK --collect --no-ask-password --pipe --quiet --service-type=exec --unit=nixos-rebuild-switch-to-configuration /nix/store/acrlavaiawwhmg0fj0vnajnpb0nxckba-nixos-system-wsl-26.05.20260422.0726a0e/bin/switch-to-configuration switch' returned non-zero exit status 1.

WSL version

WSL version: 2.7.3.0
Kernel version: 6.6.114.1-1
WSLg version: 1.0.73
MSRDC version: 1.2.6676
Direct3D version: 1.611.1-81528511
DXCore version: 10.0.26100.1-240331-1435.ge-release
Windows version: 10.0.26200.8246

[SuperSandro2000]

Do a nixos-rebuild boot or just do the switch and afterwards restart WSL.

[nixos-discourse]

This issue has been mentioned on NixOS Discourse. There might be relevant details there:

https://discourse.nixos.org/t/scary-message-about-dbus-after-running-nixos-rebuild-switch/77298/1