Homebrew (Ruby) throws an error when it gets `SIGPIPE` from the `--max-count` on `grep`.

dist/macos/bundle/build_dist.sh.in

@@ -46,7 +46,7 @@ fi
 # Check for macdeployqt on Homebrew
 if which -s brew ; then
     info "Homebrew found, searching for macdeployqt"
-    DEPLOYQT="$(brew list qt | grep --only --max-count 1 '/.*macdeployqt')"
+    DEPLOYQT="$(brew list qt | grep --only '/.*macdeployqt' | head -1)"
     if [ ! -x "$DEPLOYQT" ]; then
         error Please install package qt
         exit 1