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-rw-r--r--pkgs/development/libraries/yder/default.nix2
1 files changed, 1 insertions, 1 deletions
diff --git a/pkgs/development/libraries/yder/default.nix b/pkgs/development/libraries/yder/default.nix
index 7025fd2eb1c..5ddb1d1a131 100644
--- a/pkgs/development/libraries/yder/default.nix
+++ b/pkgs/development/libraries/yder/default.nix
@@ -32,7 +32,7 @@ stdenv.mkDerivation rec {
   doCheck = true;
 
   preCheck = ''
-    export LD_LIBRARY_PATH="$(pwd):$LD_LIBRARY_PATH"
+    export LD_LIBRARY_PATH="$(pwd)''${LD_LIBRARY_PATH:+:}$LD_LIBRARY_PATH"
     export DYLD_FALLBACK_LIBRARY_PATH="$(pwd):$DYLD_FALLBACK_LIBRARY_PATH"
   '';