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-rw-r--r--pkgs/development/libraries/grpc/default.nix2
1 files changed, 1 insertions, 1 deletions
diff --git a/pkgs/development/libraries/grpc/default.nix b/pkgs/development/libraries/grpc/default.nix
index abcd3abaf30..dfec171f1db 100644
--- a/pkgs/development/libraries/grpc/default.nix
+++ b/pkgs/development/libraries/grpc/default.nix
@@ -38,7 +38,7 @@ stdenv.mkDerivation rec {
   '';
 
   preBuild = ''
-    export LD_LIBRARY_PATH=$(pwd):$LD_LIBRARY_PATH
+    export LD_LIBRARY_PATH=$(pwd)''${LD_LIBRARY_PATH:+:}$LD_LIBRARY_PATH
   '';
 
   NIX_CFLAGS_COMPILE = stdenv.lib.optionalString stdenv.cc.isClang "-Wno-error=unknown-warning-option";