cannot set cache directory under /home

[Redhawk18]

Hi everyone, I have my system setup in a / and /home partition, and often times on apps that use large amounts of data I'll configure them to use a directory in /home I create for them. Like this

❯ ls -lah /home
total 52K
drwxr-xr-x  7 root    root   4.0K Dec 30 12:39 .
drwxr-xr-x  1 root    root    114 Sep 12 13:35 ..
drwxr-xr-x  2 atticd  atticd 4.0K Dec 30 12:39 attic
drwx--x--- 13 root    docker 4.0K Dec 30 12:27 docker
drwx------  2 root    root    16K Sep 11 15:12 lost+found
drwx------ 33 redhawk users  4.0K Dec 30 12:43 redhawk
drwxr-xr-x  2 root    root   4.0K Dec 29 00:06 tmp

I even made sure to set the folder to be owned by atticd With this config as well

{
  services.atticd = {
    enable = true;

    # Replace with absolute path to your environment file
    environmentFile = "/etc/atticd.env";

    settings = {
      listen = "[::]:47715";
      # storage = {
      #   type = "local";
      #   path = "/home/attic";
      # };

      jwt = { };
    };
  };
}

The problem is I keep getting these errors when I use the /home directory

❯ attic push poptart /run/current-system
▒ Pushing 16 paths to "poptart" on "local" (2534 already cached, 4885 in upstream)...
❌ x744z4ahr5qwvws7ng25pw2pdf1rcpc8-atticadm: InternalServerError: The server encountered an internal error or misconfiguration.
❌ 1vb7x2z1h6h4mrccw5gg8phxlhb2ffgb-unit-polkit.service: InternalServerError: The server encountered an internal error or misconfiguration.
❌ 8nqkqr89phg4q2yb41dvrmq8c6w6yxy3-nixos-system-PopTart-25.11.20251220.b3aad46: InternalServerError: The server encountered an internal error or misconfiguration.
❌ 5nrlpp1gijdin762346cvlmn9ybmyk6w-etc: InternalServerError: The server encountered an internal error or misconfiguration.
❌ apwcjb1xiihq4b1xidbfr87bd8lwyl6x-unit-accounts-daemon.service: InternalServerError: The server encountered an internal error or misconfiguration.
❌ cv1dyi3xn3379yfdnj97q8gndqrvzv0p-user-units: InternalServerError: The server encountered an internal error or misconfiguration.
❌ 1a2pl56vngp4azvbba7xxp1ag4d7c823-X-Restart-Triggers-polkit: InternalServerError: The server encountered an internal error or misconfiguration.
❌ a1wqal7lxi7jphv292wvf5bz838im11f-unit-dbus.service: InternalServerError: The server encountered an internal error or misconfiguration.
❌ hsbjkrjhn24a8miiqdp9rzlrzmvwcx73-unit-dbus.service: InternalServerError: The server encountered an internal error or misconfiguration.
❌ klprl4fd61y9y5q8k881nsxhnqzk9dly-unit-atticd.service: error sending request for url (http://localhost:47715/_api/v1/upload-path)
❌ zzsg0lpbjajkmj3c4az7c24bwyx25194-dbus-1: InternalServerError: The server encountered an internal error or misconfiguration.
❌ b27b4bprblnafgvbsdxy354pss3h9ypl-atticd-atticadm: InternalServerError: The server encountered an internal error or misconfiguration.
❌ jh6l5fj4ny2i283wxvb0hgj48srnpfbl-X-Restart-Triggers-dbus: InternalServerError: The server encountered an internal error or misconfiguration.
❌ 6pd9mpl8y9xh8m9vyhlmq6xs8xi2z1cw-checked-attic-server.toml: InternalServerError: The server encountered an internal error or misconfiguration.
❌ is4m79qibmizf8yjy9knd81fss3mybfi-system-units: InternalServerError: The server encountered an internal error or misconfiguration.
❌ qa4kf0yik9r0pndpsi2s2li9cifv4214-system-path: InternalServerError: The server encountered an internal error or misconfiguration.
Error: InternalServerError: The server encountered an internal error or misconfiguration.

[lheckemann]

This is probably because of the ProtectHome systemd sandboxing option (see man systemd.exec for details). The preferred approach would probably be not to use /home for this, but if you really want that you can set systemd.services.atticd.serviceConfig.ProtectHome = false;.