From 2cd35e2b4591d46dd7b5d0190f2c1dab70d8f0dc Mon Sep 17 00:00:00 2001
From: K900 <me@0upti.me>
Date: Wed, 7 Aug 2024 09:42:01 +0300
Subject: [PATCH] nixos/vaultwarden: fix eval

---
 nixos/modules/services/security/vaultwarden/default.nix | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/nixos/modules/services/security/vaultwarden/default.nix b/nixos/modules/services/security/vaultwarden/default.nix
index d95a19a5fac7..11d49b580b31 100644
--- a/nixos/modules/services/security/vaultwarden/default.nix
+++ b/nixos/modules/services/security/vaultwarden/default.nix
@@ -168,7 +168,7 @@ in {
         message = "Backups for database backends other than sqlite will need customization";
       }
       {
-        assertion = !(lib.hasPrefix dataDir cfg.backupDir);
+        assertion = cfg.backupDir != null -> !(lib.hasPrefix dataDir cfg.backupDir);
         message = "Backup directory can not be in ${dataDir}";
       }
     ];