rst2html: TOC with custom links?

With text:

  Section level 1
  ===============

  .. _sec-xxx:

  This is a paragraph.

I expect that TOC points to book.html#sec-xxx, but instead it refer to
book.html#section-level-1:

  <a class="reference internal" href="#section-level-1" id="id9">Section level 1</a>
   ...
  <a class="toc-backref" href="#id9">Section level 1</a>
  <p id="sec-xxx">This is a paragraph.</p>

I use Cyrillic RST texts and ``rst2html`` doesn't generate meaningful hashes
as "section-level-1" is.

Also for long running documents I would prefer to assign fixed links that
doesn't depends on changes in section title.

-- 
http://defun.work/


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