Contribute
==========

You want to add some code to WeasyPrint, launch its tests or improve its
documentation? Thank you very much! Here are some tips to help you play with
WeasyPrint in good conditions.

The first step is to clone the repository, create a virtual environment and
install WeasyPrint dependencies.

.. code-block:: shell

   git clone https://github.com/Kozea/WeasyPrint.git
   cd WeasyPrint
   python -m venv venv
   venv/bin/pip install -e '.[doc,test]'

You can then launch Python to test your changes.

.. code-block:: shell

   venv/bin/python


Code & Issues
-------------

If you’ve found a bug in WeasyPrint, it’s time to report it, and to fix it if you
can!

You can report bugs and feature requests on `GitHub`_. If you want to add or
fix some code, please fork the repository and create a pull request, we’ll be
happy to review your work.

You can find more information about the code architecture in the :ref:`Dive
into the Source` section.

.. _GitHub: https://github.com/Kozea/WeasyPrint


Tests
-----

Tests are stored in the ``tests`` folder at the top of the repository. They use
the pytest_ library.

Tests require Ghostscript_ to be installed and available on the local path. You
should also install all the `DejaVu fonts`_ if you’re on Linux.

You can launch tests using the following command::

  venv/bin/python -m pytest

WeasyPrint also uses isort_ to check imports and flake8_ to check the coding
style::

  venv/bin/python -m isort . --check --diff
  venv/bin/python -m flake8

.. _pytest: https://docs.pytest.org/
.. _Ghostscript: https://www.ghostscript.com/
.. _DejaVu fonts: https://dejavu-fonts.github.io/
.. _isort: https://pycqa.github.io/isort/
.. _flake8: https://flake8.pycqa.org/


Documentation
-------------

Documentation is stored in the ``docs`` folder at the top of the repository. It
relies on the `Sphinx`_ library.

You can build the documentation using the following command::

  venv/bin/sphinx-build docs docs/_build

The documentation home page can now be found in the
``/path/to/weasyprint/docs/_build/index.html`` file. You can open this file in a
browser to see the final rendering.

.. _Sphinx: https://www.sphinx-doc.org/