top-level: avoid another `assert false` while we're at it

1 files changed, 2 insertions, 2 deletions

diff --git a/pkgs/top-level/default.nix b/pkgs/top-level/default.nix
index 31c51215676b1..658f149908c76 100644
--- a/pkgs/top-level/default.nix
+++ b/pkgs/top-level/default.nix
@@ -25,7 +25,7 @@
 
 , # The standard environment for building packages, or rather a function
   # providing it. See below for the arguments given to that function.
-  stdenv ? assert false; null
+  stdenvFunc ? import ../stdenv
 
 , crossSystem ? null
 , platform ? assert false; null
@@ -76,7 +76,7 @@ in let
     inherit lib nixpkgsFun;
   } // newArgs);
 
-  stdenv = (args.stdenv or (import ../stdenv)) {
+  stdenv = stdenvFunc {
     inherit lib allPackages system platform crossSystem config;
   };