添加flake.nix后nixos-rebuild switch执行失败求助

操作背景 #

• 在/etc/nixos/configuration.nix中添加Nginx相关配置
• 创建网站目录并配置对应权限
• 编写/etc/nixos/flake.nix文件，指定使用nixpkgs/nixos-unstable分支

问题现象 #

• 执行sudo nix flake check /etc/nixos无异常
• 执行sudo nixos-rebuild switch失败，未添加flake.nix前该命令可正常运行

错误日志 #

× systemd-sysctl.service - Apply Kernel Variables
     Loaded: loaded (/etc/systemd/system/systemd-sysctl.service; enabled; preset: enabled)
    Drop-In: /nix/store/9mnkvlaxvwlp3iw50mf2p91rm3simizr-system-units/systemd-sysctl.service.d
             └─overrides.conf
     Active: failed (Result: exit-code) since Sun 2022-12-25 08:26:30 UTC; 64ms ago
   Duration: 29min 7.255s
       Docs: man:systemd-sysctl.service(8)
             man:sysctl.d(5)
    Process: 10842 ExecStart=/nix/store/9rjdvhq7hnzwwhib8na2gmllsrh671xg-systemd-252.1/lib/systemd/systemd-sysctl (code=exited, status=243/CREDENTIALS)
   Main PID: 10842 (code=exited, status=243/CREDENTIALS)
         IP: 0B in, 0B out


Dec 25 08:26:30 nixos systemd[1]: Starting Apply Kernel Variables...
Dec 25 08:26:30 nixos systemd[10842]: systemd-sysctl.service: Failed to set up credentials: Protocol error
Dec 25 08:26:30 nixos systemd[10842]: systemd-sysctl.service: Failed at step CREDENTIALS spawning /nix/store/9rjdvhq7hnzwwhib8na2gmllsrh671xg-systemd-252.1/lib/systemd/systemd-sysctl: Protocol error
Dec 25 08:26:30 nixos systemd[1]: systemd-sysctl.service: Main process exited, code=exited, status=243/CREDENTIALS
Dec 25 08:26:30 nixos systemd[1]: systemd-sysctl.service: Failed with result 'exit-code'.
Dec 25 08:26:30 nixos systemd[1]: Failed to start Apply Kernel Variables.

× systemd-tmpfiles-setup-dev.service - Create Static Device Nodes in /dev
     Loaded: loaded (/etc/systemd/system/systemd-tmpfiles-setup-dev.service; enabled; preset: enabled)
     Active: failed (Result: exit-code) since Sun 2022-12-25 08:26:30 UTC; 68ms ago
   Duration: 29min 7.256s
       Docs: man:tmpfiles.d(5)
             man:systemd-tmpfiles(8)
    Process: 10844 ExecStart=systemd-tmpfiles --prefix=/dev --create --boot (code=exited, status=243/CREDENTIALS)
   Main PID: 10844 (code=exited, status=243/CREDENTIALS)
         IP: 0B in, 0B out

Dec 25 08:26:30 nixos systemd[1]: Starting Create Static Device Nodes in /dev...
Dec 25 08:26:30 nixos systemd[10844]: systemd-tmpfiles-setup-dev.service: Failed to set up credentials: Protocol error
Dec 25 08:26:30 nixos systemd[10844]: systemd-tmpfiles-setup-dev.service: Failed at step CREDENTIALS spawning systemd-tmpfiles: Protocol error
Dec 25 08:26:30 nixos systemd[1]: systemd-tmpfiles-setup-dev.service: Main process exited, code=exited, status=243/CREDENTIALS
Dec 25 08:26:30 nixos systemd[1]: systemd-tmpfiles-setup-dev.service: Failed with result 'exit-code'.
Dec 25 08:26:30 nixos systemd[1]: Failed to start Create Static Device Nodes in /dev.
warning: error(s) occurred while switching to the new configuration

疑问 #

添加flake.nix后为何会导致sudo nixos-rebuild switch执行失败？

内容的提问来源于stack exchange，提问作者Pierre-olivier Gendraud