From 646b279c55780fa8cfe79b2a3b1e3ab53b445be7 Mon Sep 17 00:00:00 2001
From: Frederik Rietdijk <fridh@fridh.nl>
Date: Mon, 25 Nov 2019 21:50:44 +0100
Subject: [PATCH] kdeFrameworks setup hook: fix set -u regression

---
 pkgs/development/libraries/kde-frameworks/default.nix | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pkgs/development/libraries/kde-frameworks/default.nix b/pkgs/development/libraries/kde-frameworks/default.nix
index 845c911789d..9e03965441e 100644
--- a/pkgs/development/libraries/kde-frameworks/default.nix
+++ b/pkgs/development/libraries/kde-frameworks/default.nix
@@ -48,7 +48,7 @@ let
                     # Propagate $dev so that this setup hook is propagated
                     # But only if there is a separate $dev output
                     if [ "''${outputDev:?}" != out ]; then
-                        propagatedBuildInputs="$propagatedBuildInputs @dev@"
+                        propagatedBuildInputs="''${propagatedBuildInputs-} @dev@"
                     fi
                 fi
               '';