From e8dae9246b5ce13bc573c2e2747c1c62f5ac38e0 Mon Sep 17 00:00:00 2001
From: Bob van der Linden <bobvanderlinden@gmail.com>
Date: Wed, 13 Oct 2021 22:29:29 +0200
Subject: [PATCH] use pkgs.formats.json

---
 nixos/modules/virtualisation/docker.nix | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/nixos/modules/virtualisation/docker.nix b/nixos/modules/virtualisation/docker.nix
index e273b964f58b..b131ebd4f174 100644
--- a/nixos/modules/virtualisation/docker.nix
+++ b/nixos/modules/virtualisation/docker.nix
@@ -8,8 +8,8 @@ let
 
   cfg = config.virtualisation.docker;
   proxy_env = config.networking.proxy.envVars;
-  daemonSettingsJson = builtins.toJSON cfg.daemon.settings;
-  daemonSettingsFile = pkgs.writeText "daemon.json" daemonSettingsJson;
+  settingsFormat = pkgs.formats.json {};
+  daemonSettingsFile = settingsFormat.generate "daemon.json" cfg.daemon.settings;
 in
 
 {
@@ -55,7 +55,7 @@ in
 
     daemon.settings =
       mkOption {
-        type = types.anything;
+        type = settingsFormat.type;
         default = { };
         example = {
           ipv6 = true;