bug: home-manager-<user>.service fails to start after boot, but works fine when manually restarted

[niksingh710]

Are you following the right branch?

• My Nixpkgs and Home Manager versions are in sync

Is there an existing issue for this?

• I have searched the existing issues

Issue description

running systemctl --failed listed that home-manager-niksingh710.service failed to start.
Tried restarting it via systemctl restart home-manager-niksingh710.service and it started fine.

× home-manager-niksingh710.service - Home Manager environment for niksingh710
     Loaded: loaded (/etc/systemd/system/home-manager-niksingh710.service; enabled; preset: ignored)
     Active: failed (Result: exit-code) since Wed 2024-12-25 14:23:05 IST; 54s ago
 Invocation: cf12d3a0092a470ea8e80aeb0fc88714
    Process: 1764 ExecStart=/nix/store/m91h9kmjw78swvldfb9px8qnv1nb23ax-hm-setup-env /nix/store/3i3h2j0fbjcr5afyflgcjzyapy34d001-home-manager-generation (code=exited, status=1/FAILURE)
   Main PID: 1764 (code=exited, status=1/FAILURE)
         IP: 0B in, 0B out
         IO: 60.3M read, 0B written
   Mem peak: 86M
        CPU: 1.711s

Dec 25 14:23:05 mach hm-activate-niksingh710[1764]: Activating onFilesChange
Dec 25 14:23:05 mach hm-activate-niksingh710[1764]: Activating regenDotTaskRc
Dec 25 14:23:05 mach hm-activate-niksingh710[1764]: Activating reloadSystemd
Dec 25 14:23:05 mach hm-activate-niksingh710[1764]: User systemd daemon not running. Skipping reload.
Dec 25 14:23:05 mach hm-activate-niksingh710[1764]: Activating setupEtc
Dec 25 14:23:05 mach systemctl[3498]: Failed to connect to user scope bus via local transport: No medium found
Dec 25 14:23:05 mach systemd[1]: home-manager-niksingh710.service: Main process exited, code=exited, status=1/FAILURE
Dec 25 14:23:05 mach systemd[1]: home-manager-niksingh710.service: Failed with result 'exit-code'.
Dec 25 14:23:05 mach systemd[1]: Failed to start Home Manager environment for niksingh710.
Dec 25 14:23:05 mach systemd[1]: home-manager-niksingh710.service: Consumed 1.711s CPU time, 86M memory peak, 60.3M read from disk.

Maintainer CC

No response

System information

- system: `"x86_64-linux"`
 - host os: `Linux 6.12.5-xanmod1, NixOS, 25.05 (Warbler), 25.05.20241219.d70bd19`
 - multi-user?: `yes`
 - sandbox: `yes`
 - version: `nix-env (Lix, like Nix) 2.91.1
System type: x86_64-linux
Additional system types: i686-linux, x86_64-v1-linux, x86_64-v2-linux, x86_64-v3-linux
Features: gc, signed-caches
System configuration file: /etc/nix/nix.conf
User configuration files: /home/niksingh710/.config/nix/nix.conf:/nix/store/nv30kkn3y3wibmsc12z98i4wrswl3vq8-stylix-kde-config/nix/nix.conf:/etc/xdg/nix/nix.conf:/home/niksingh710/.nix-profile/etc/xdg/nix/nix.conf:/nix/profile/etc/xdg/nix/nix.conf:/home/niksingh710/.local/state/nix/profile/etc/xdg/nix/nix.conf:/etc/profiles/per-user/niksingh710/etc/xdg/nix/nix.conf:/nix/var/nix/profiles/default/etc/xdg/nix/nix.conf:/run/current-system/sw/etc/xdg/nix/nix.conf
Store directory: /nix/store
State directory: /nix/var/nix
Data directory: /nix/store/873hdnqclw6c5kqax9mmw57a72rn4c3h-lix-2.91.1/share`
 - nixpkgs: `/etc/nixpkgs/channels/nixpkgs`