lispPackages.clwrapper: NIX_LISP_LD_LIBRARY_PATH might be undefined

2019-11-05 19:45:48 -05:00
parent 67cc85ec67
commit 0b90a7f67f
1 changed files with 1 additions and 1 deletions
--- a/pkgs/development/lisp-modules/clwrapper/setup-hook.sh
+++ b/pkgs/development/lisp-modules/clwrapper/setup-hook.sh
@@ -27,7 +27,7 @@ setLisp () {

 collectNixLispLDLP () {
     if echo "$1/lib"/lib*.so* | grep . > /dev/null; then
-	 export NIX_LISP_LD_LIBRARY_PATH="$NIX_LISP_LD_LIBRARY_PATH${NIX_LISP_LD_LIBRARY_PATH:+:}$1/lib"
+	 export NIX_LISP_LD_LIBRARY_PATH="${NIX_LISP_LD_LIBRARY_PATH-}${NIX_LISP_LD_LIBRARY_PATH:+:}$1/lib"
     fi
 }