message: use local build directory as install prefix for getdeps oss build
  Summary: easier to find the build artifacts
diff: @@ -25,7 +25,7 @@ mkdir -p "$STAGE"
  for getdeps in "${GETDEPS_PATHS[@]}"; do
  if [[ -x "$getdeps" ]]; then
  - "$getdeps" build mvfst --current-project mvfst "$@"
  + "$getdeps" build mvfst --current-project mvfst "$@" --install-prefix=${STAGE}
  exit 0
  fi
  done
  