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-rw-r--r--pkgs/tools/X11/primus/default.nix2
1 files changed, 1 insertions, 1 deletions
diff --git a/pkgs/tools/X11/primus/default.nix b/pkgs/tools/X11/primus/default.nix
index a70b619a6b4..eb8aa042e7b 100644
--- a/pkgs/tools/X11/primus/default.nix
+++ b/pkgs/tools/X11/primus/default.nix
@@ -27,7 +27,7 @@ let
 
 in writeScriptBin "primusrun" ''
   #!${runtimeShell}
-  export LD_LIBRARY_PATH=${ldPath}:$LD_LIBRARY_PATH
+  export LD_LIBRARY_PATH=${ldPath}''${LD_LIBRARY_PATH:+:}$LD_LIBRARY_PATH
   # https://bugs.launchpad.net/ubuntu/+source/bumblebee/+bug/1758243
   export __GLVND_DISALLOW_PATCHING=1
   exec "$@"