[pkg] make cubicweb[crypto] depends on pycryptodome instead of pycrypto
pycrypto isn't maintained anymore, the last release 2.6.1 is from 2014.
Use the drop-in replacement fork pycryptodome instead.
pycryptodome is packaged in debian starting from stretch-backports.
.. _rset_module:
:mod:`cubicweb.rset`
====================
.. automodule:: cubicweb.rset
.. autoclass:: ResultSet
:members: