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Installation
============
Prerequisites
-------------
The program is implemented in Python. The current version can run using Python
2.7 and 3.4 onwards.
PostgreSQL client-side development tools are required to build and install
extensions.
Installation from the Python Package Index
------------------------------------------
The PGXN client is `hosted on PyPI`__, therefore the easiest way to install
the program is through a Python installation tool such as pip_. For example a
system-wide installation can be obtained with::
$ sudo pip install pgxnclient
To upgrade from a previous version to the most recent available you may run
instead::
$ sudo pip install --upgrade pgxnclient
The documentation of the installation tool of your choice will also show how
to perform a local installation.
.. __: https://pypi.org/project/pgxnclient/
.. _pip: https://pip.pypa.io/en/latest/
Installation from source
------------------------
The program can also be installed from the source, either from a `source
package`__ or from the `source repository`__: in this case you can install the
program using::
$ python setup.py install
.. __: https://pypi.org/project/pgxnclient/
.. __: https://github.com/pgxn/pgxnclient
Running from the project directory
----------------------------------
You can also run PGXN Client directly from the project directory, either
unpacked from a `source package`__, or cloned from the `source repository`__,
without performing any installation.
Just make sure that the project directory is in the :envvar:`PYTHONPATH` and
run the :program:`bin/pgxn` script::
$ cd /path/to/pgxnclient
$ export PYTHONPATH=`pwd`
$ ./bin/pgxn --version
pgxnclient 1.3.0 # just an example
.. __: https://pypi.org/project/pgxnclient/
.. __: https://github.com/pgxn/pgxnclient
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