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-rw-r--r--nixos/lib/eval-config.nix2
1 files changed, 1 insertions, 1 deletions
diff --git a/nixos/lib/eval-config.nix b/nixos/lib/eval-config.nix
index 058ab7280ccc3..e1242276a74d4 100644
--- a/nixos/lib/eval-config.nix
+++ b/nixos/lib/eval-config.nix
@@ -31,7 +31,7 @@ evalConfigArgs@
 , prefix ? []
 , lib ? import ../../lib
 , extraModules ? let e = builtins.getEnv "NIXOS_EXTRA_MODULE_PATH";
-                 in if e == "" then [] else [(import e)]
+                 in lib.optional (e != "") (import e)
 }:
 
 let pkgs_ = pkgs;