From f18d5e393695e76bb01de9e5fa39a2a6ef6b2515 Mon Sep 17 00:00:00 2001
From: Johannes Kirschbauer <hsjobeki@gmail.com>
Date: Thu, 23 Apr 2026 14:00:12 +0200
Subject: [PATCH] nixos/nixpkgs.config: use mkDefault for
 _module.args.docPrefix

---
 pkgs/top-level/config.nix | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/pkgs/top-level/config.nix b/pkgs/top-level/config.nix
index 8c4438ae154d..a92dd200ccf6 100644
--- a/pkgs/top-level/config.nix
+++ b/pkgs/top-level/config.nix
@@ -9,7 +9,7 @@
 {
   config,
   lib,
-  docPrefix ? "",
+  docPrefix,
   ...
 }:
 
@@ -515,6 +515,7 @@ in
   inherit options;
 
   config = {
+    _module.args.docPrefix = lib.mkDefault "";
     warnings =
       optionals config.warnUndeclaredOptions (
         mapAttrsToList (k: v: "undeclared Nixpkgs option set: config.${k}") config._undeclared or { }