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-rw-r--r--nixpkgs/pkgs/development/libraries/yder/default.nix2
1 files changed, 1 insertions, 1 deletions
diff --git a/nixpkgs/pkgs/development/libraries/yder/default.nix b/nixpkgs/pkgs/development/libraries/yder/default.nix
index 10d055eb4d76..924a06e9551d 100644
--- a/nixpkgs/pkgs/development/libraries/yder/default.nix
+++ b/nixpkgs/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"
   '';