Home Directory is not Created for the New User

[rennsax]

nix-darwin uses createhomedir(1) to create the user's home directory when createHome is set to true (check here). However, createhomedir(1) somehow does not create the home directory.

Is this behavior by design? Or do I misunderstand createhomedir(1)?

To reproduce, add this piece of attribute set to the modules:

{
  users.users = {
    nix-user = {
      name = "nix-user";
      uid = 502;
      isHidden = true;
      description = "nix-user";
      shell = pkgs.bashInteractive;
      home = "/home/nix-user";
      createHome = true;
    };
  };
  users.forceRecreate = true; # always recreate, otherwise createhomedir won't be run
  users.knownUsers = [ "nix-user" ];
}

After darwin-rebuild switch I can sudo su nix-user, but the home directory of nix-user (/home/nix-user) is not created.

[rennsax]

Additionally, I find that declare users.users.<name>.shell for an existing user won't change the user shell. Maybe it's a little bit unreasonable?