Can't change default networking.hostId value when usingzpool disko config

[sbc64]

I don't know whether to make the issue in this repository or at https://github.com/nix-community/nixos-anywhere, even though I'm using nixos-anywhere it seems that the executing scripts recide in this repository.

Here is the disko config I'm trying to use:

# disc-config.nix
{
  lib,
  config,
  ...
}:{
  # This doesn't work
  networking.hostId = lib.mkForce "00022319"; 
  # This works
  # networking.hostId = lib.mkForce "8425e349";
  
  
  disko.devices = {
    disk.main = {
      device = lib.mkDefault "/dev/disk/by-id/scsi-0QEMU_QEMU_HARDDISK_38446325";
      type = "disk";
      content = {
        type = "gpt";
        partitions = {
          boot = {
            name = "boot";
            size = "500M";
            type = "EF02";
          };
          esp = {
            name = "ESP";
            size = "1G";
            type = "EF00";
            content = {
              type = "filesystem";
              format = "vfat";
              mountpoint = "/boot";
            };
          };
          zfs = {
            size = "100%";
            content = {
              type = "zfs";
              pool = "zroot";
            };
          };
        };
      };
    };
    zpool = {
      zroot = {
        type = "zpool";
        rootFsOptions = {
          compression = "zstd";
          "com.sun:auto-snapshot" = "false";
        };
        mountpoint = "/";
        postCreateHook = "zfs snapshot zroot@blank";
        datasets = {
          nextcloud = {
            type = "zfs_fs";
            mountpoint = "/nextcloud";
            options = {
              "com.sun:auto-snapshot" = "true";
              "userprop:access" = "nextcloud";
              mountpoint = "legacy";
            };
          };
        };
      };
    };
  };
}

If I use networking.hostId = "<something other than 8425e349>", I get greated with the following booting sequence:

I have not been able to find out how disko sets the current 8425e349 hostId since all the results I see are in the test libraries: https://github.com/search?q=repo%3Anix-community%2Fdisko+8425e349&type=code

How can I set my own networking.hostId value, or do I have to change after the first boot sequence is done, if changing is at all possible?

[Mic92]

The hostid comes from here: https://github.com/nix-community/nixos-images/blob/87bccdbdfbeb07e0c4fb4c2ec3d71986e8fa24d9/nix/noninteractive.nix#L52
There can currently only be changed by rebuilding the installer image. We have some zpool export step that is supposed to solve this issue, but it seems to be not always be effective?

[Mic92]

Does this fix the issue? nix-community/nixos-anywhere#239

[Mic92]

Let's wait for feedback if this fixed the root cause.
It would be also good to know what the error output is in case it does not work.

[phaer]

Ah thanks, I did not close this - Github did so automatically because of the PRs message. Its clever enough to interpret "fixes", but not clever enough to understand "potentially" :D

[sbc64]

nix-community/nixos-anywhere#239 solved the issue.

Thank you very much for your stupendus speed!

Edit:

I have the hostId I wanted now on my sytem:

[root@<domain>:~]# hostid
15fa0d9f