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Better descriptions of the non-C porting in install docs

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Daniele Varrazzo 2020-03-08 11:33:31 +00:00
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doc/src/install.rst
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@ -11,18 +11,22 @@ wrapper for the libpq_, the official PostgreSQL client library.
The `psycopg2` package is the current mature implementation of the adapter: it The `psycopg2` package is the current mature implementation of the adapter: it
is a C extension and as such it is only compatible with CPython_. If you want is a C extension and as such it is only compatible with CPython_. If you want
to use Psycopg on a different Python implementation (PyPy, Jython, IronPython) to use Psycopg on a different Python implementation (PyPy, Jython, IronPython)
there is an experimental `porting of Psycopg for Ctypes`__, but it is not as there is a couple of alternative:
mature as the C implementation yet.
In addition to that port, there is a `CFFI port of Psycopg`__ which is - a `Ctypes port`__, but it is not as mature as the C implementation yet
faster on PyPy and has seen some success in production environments. and it is not as feature-complete;
- a `CFFI port`__ which is currently more used and reported more efficient on
PyPy, but plese be careful to its version numbers because they are not
aligned to the official psycopg2 ones and some features may differ.
.. _PostgreSQL: https://www.postgresql.org/ .. _PostgreSQL: https://www.postgresql.org/
.. _Python: https://www.python.org/ .. _Python: https://www.python.org/
.. _libpq: https://www.postgresql.org/docs/current/static/libpq.html .. _libpq: https://www.postgresql.org/docs/current/static/libpq.html
.. _CPython: https://en.wikipedia.org/wiki/CPython .. _CPython: https://en.wikipedia.org/wiki/CPython
.. _Ctypes: https://docs.python.org/library/ctypes.html .. _Ctypes: https://docs.python.org/library/ctypes.html
.. _`CFFI port of Psycopg`: https://github.com/chtd/psycopg2cffi
.. __: https://github.com/mvantellingen/psycopg2-ctypes .. __: https://github.com/mvantellingen/psycopg2-ctypes
.. __: https://github.com/chtd/psycopg2cffi