diff --git a/overlays.nix b/overlays.nix
index edaeb67..6678942 100755
--- a/overlays.nix
+++ b/overlays.nix
@@ -268,17 +268,23 @@ let
             prev.runCommandLocal "${finalAttrs.finalPackage.name}-ldd"
               {
                 nativeBuildInputs = [
+                  prev.glibc.bin
                   prev.fd
                 ];
               }
               ''
                 worker() (
                     local output
-                    set +e
-                    output="$(ldd "$1")"
-                    if [[ $? -ne 0 ]] || grep <<<"$output" -q " not found"; then
-                        echo "$1"
+                    set -u +e
+                    output="$(ldd "$1" 2>&1)"
+                    retcode="$?"
+                    if [[ "$retcode" -ne 0 && "$output" != $'$\tnot a dynamic executable' ]]; then
+                        echo "error: ldd $1 (retcode=$retcode)"
+                        cat <<<"$output"
+                        touch any_error
+                    elif grep <<<"$output" -q " not found"; then
                         # TODO: show executable permission errors too
+                        echo "error: ldd $1 (log detection)"
                         grep <<<"$output" " not found"
                         touch any_error
                     fi
@@ -295,7 +301,7 @@ let
                     --hidden
                     --no-ignore
                     --follow # symlinks
-                    -x bash -c "$(declare -f worker); worker \"\$@\""
+                    -x bash -c "$(declare -f worker); worker \"\$@\"" --
                 )
                 fd "''${fd_args[@]}"