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-rw-r--r--nixpkgs/pkgs/development/tools/misc/patchelf/setup-hook.sh2
1 files changed, 1 insertions, 1 deletions
diff --git a/nixpkgs/pkgs/development/tools/misc/patchelf/setup-hook.sh b/nixpkgs/pkgs/development/tools/misc/patchelf/setup-hook.sh
index bc1cddd4879c..576b9ca2103e 100644
--- a/nixpkgs/pkgs/development/tools/misc/patchelf/setup-hook.sh
+++ b/nixpkgs/pkgs/development/tools/misc/patchelf/setup-hook.sh
@@ -2,7 +2,7 @@
 # directories from the RPATH of every library or executable in every
 # output.
 
-fixupOutputHooks+=('if [ -z "$dontPatchELF" ]; then patchELF "$prefix"; fi')
+fixupOutputHooks+=('if [ -z "${dontPatchELF-}" ]; then patchELF "$prefix"; fi')
 
 patchELF() {
     local dir="$1"