From 3fbb8e08a1f856ac4be407c309f35797c8cdc182 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Robert=20Sch=C3=BCtz?= <mail@dotlambda.de>
Date: Fri, 19 Sep 2025 05:35:09 -0700
Subject: [PATCH] nixos/immich: set $XDG_CACHE_HOME

The immich-machine-learning service can fail with

    RuntimeError: Data processing error: I/O error: Operation not permitted (os error 1)

because huggingface attempts to download files to $HOME/.cache (which
doesn't exist in this case) unless $XDG_CACHE_HOME or $HF_HOME is set.
---
 nixos/modules/services/web-apps/immich.nix | 1 +
 1 file changed, 1 insertion(+)

diff --git a/nixos/modules/services/web-apps/immich.nix b/nixos/modules/services/web-apps/immich.nix
index 6fdfb0c831b5..a68066c30df0 100644
--- a/nixos/modules/services/web-apps/immich.nix
+++ b/nixos/modules/services/web-apps/immich.nix
@@ -360,6 +360,7 @@ in
       MACHINE_LEARNING_WORKERS = "1";
       MACHINE_LEARNING_WORKER_TIMEOUT = "120";
       MACHINE_LEARNING_CACHE_FOLDER = "/var/cache/immich";
+      XDG_CACHE_HOME = "/var/cache/immich";
       IMMICH_HOST = "localhost";
       IMMICH_PORT = "3003";
     };