intermediate changes

ref:bd4c87915afa60f0f7dbdf69d510f8aac2748123

contrib/python/attrs/.yandex_meta/yamaker.yaml

@@ -0,0 +1,2 @@
+mark_as_py3_sources:
+- attr/_next_gen.py

contrib/python/attrs/AUTHORS.rst

@@ -0,0 +1,11 @@
+Credits
+=======
+
+``attrs`` is written and maintained by `Hynek Schlawack <https://hynek.me/>`_.
+
+The development is kindly supported by `Variomedia AG <https://www.variomedia.de/>`_.
+
+A full list of contributors can be found in `GitHub's overview <https://github.com/python-attrs/attrs/graphs/contributors>`_.
+
+It’s the spiritual successor of `characteristic <https://characteristic.readthedocs.io/>`_ and aspires to fix some of it clunkiness and unfortunate decisions.
+Both were inspired by Twisted’s `FancyEqMixin <https://twistedmatrix.com/documents/current/api/twisted.python.util.FancyEqMixin.html>`_ but both are implemented using class decorators because `subclassing is bad for you <https://www.youtube.com/watch?v=3MNVP9-hglc>`_, m’kay?

contrib/python/attrs/ya.make

@@ -1,11 +1,13 @@
-PY23_LIBRARY()
+# Generated by devtools/yamaker (pypi).
 
-LICENSE(MIT)
+PY23_LIBRARY()
 
 OWNER(g:python-contrib)
 
 VERSION(21.2.0)
 
+LICENSE(MIT)
+
 NO_LINT()
 
 PY_SRCS(