From 645af1a6983e2d6f45cefd2d2eecc7e60ad5b2c5 Mon Sep 17 00:00:00 2001
From: Yifei Sun <ysun@hey.com>
Date: Sun, 10 Aug 2025 21:28:48 +0200
Subject: [PATCH] nixos/calibre-web: fix book cover not showing up due to cache
 directory defaults to cps path under /nix/store/

---
 nixos/modules/services/web-apps/calibre-web.nix | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/nixos/modules/services/web-apps/calibre-web.nix b/nixos/modules/services/web-apps/calibre-web.nix
index 0950dc02373d..82e58873f733 100644
--- a/nixos/modules/services/web-apps/calibre-web.nix
+++ b/nixos/modules/services/web-apps/calibre-web.nix
@@ -178,6 +178,10 @@ in
 
           ExecStart = "${calibreWebCmd} -i ${cfg.listen.ip}";
           Restart = "on-failure";
+
+          CacheDirectory = "calibre-web";
+          CacheDirectoryMode = "0750";
+          environment.CACHE_DIR = "/var/cache/calibre-web";
         }
         // lib.optionalAttrs (!(lib.hasPrefix "/" cfg.dataDir)) {
           StateDirectory = cfg.dataDir;