uutils-coreutils: symlink multicall aliases to fix closure size (#511356)

  env = {

    CARGO_BUILD_TARGET = stdenv.hostPlatform.rust.rustcTargetSpec;

    # Upstream uses hardlinks for the multicall aliases by default, but NAR

    # serialization does not preserve hardlinks, exploding the closure to

    # ~100 copies of the 14 MiB binary.

    LN = "ln -sf";

  }

  // lib.optionalAttrs selinuxSupport {

    SELINUX_INCLUDE_DIR = "${lib.getInclude libselinux}/include";