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Developer Setup
===============
The source code is hosted on GitHub. Fork the repository with the following
command::
git clone https://github.com/mu-editor/mu.git
**Mu does not and never will use or support Python 2**. You should use Python
3.5 or above.
Windows, OSX, Linux
+++++++++++++++++++
Create a working development environment by installing all the dependencies
into your virtualenv with::
pip install -e ".[dev]"
.. note::
The Mu package distribution, as specified in ``setup.py``, declares
both runtime and extra dependencies.
The above mentioned ``pip install -e ".[dev]"`` installs all runtime
dependencies and most development ones: it should serve nearly everyone.
For the sake of completeness, however, here are a few additional details.
The ``[dev]`` extra is actually the aggregation of the following extras:
* ``[tests]`` specifies the testing dependencies, needed by ``make test``.
* ``[docs]`` specifies the doc building dependencies, needed by ``make docs``.
* ``[i18n]`` specifies the translation dependencies, needed by ``make translate_*``.
* ``[package]`` specifies the packaging dependencies needed by ``make win32``,
``make win64``, ``make macos``, or ``make dist``.
Additionally, the following extras are defined:
* ``[utils]`` specifies the dependencies needed to run the utilities
under the ``utils`` directory. It has been specifically excluded from
the ``[dev]`` extra for two reasons: i) on the Windows platform, it
requires a C compiler to be installed (as of this writing), and
ii) running such utilities is seldom needed in Mu's development process.
* ``[all]`` includes all the dependencies in all extras.
.. warning::
Sometimes, having several different versions of PyQt installed on your
machine can cause problems (see
`this issue <https://github.com/mu-editor/mu/issues/297>`_ for example).
Using a virtualenv will ensure your development environment is safely
isolated from such problematic version conflicts.
If in doubt, throw away your virtualenv and start again with a fresh
install as per the instructions above.
On Windows, use the venv module from the standard library to avoid an
issue with the Qt modules missing a DLL::
py -3 -mvenv .venv
Virtual environment setup can vary depending on your operating system.
To learn more about virtual environments, see this `in-depth guide from Real Python <https://realpython.com/python-virtual-environments-a-primer/>`_.
Running Development Mu
++++++++++++++++++++++
.. note:: From this point onwards, instructions assume that you're using
a virtual environment.
To run the local development version of Mu, in the root of the repository type::
python run.py
An alternative form is to type::
python -m mu
Yet another one is typing::
mu-editor
Raspberry Pi
++++++++++++
If you are working on a Raspberry Pi there are additional steps to create a
working development environment:
1. Install required dependencies from Raspbian repository::
sudo apt-get install python3-pyqt5 python3-pyqt5.qsci python3-pyqt5.qtserialport python3-pyqt5.qtsvg python3-dev python3-gpiozero python3-pgzero libxmlsec1-dev libxml2 libxml2-dev
2. If you are running Raspbian Buster or newer you can also install this
optional package::
sudo apt-get install python3-pyqt5.qtchart
3. Create a virtualenv that uses Python 3 and allows the virtualenv access
to the packages installed on your system via the ``--system-site-packages``
flag::
sudo pip3 install virtualenv
virtualenv -p /usr/bin/python3 --system-site-packages ~/mu-venv
4. Activate the virtual environment ::
source ~/mu-venv/bin/activate
5. Clone mu::
(mu-venv) $ git clone https://github.com/mu-editor/mu.git ~/mu-source
6. With the virtualenv enabled, pip install the Python packages for the
Raspberry Pi with::
(mu-venv) $ cd ~/mu-source
(mu-venv) $ pip install -e ".[dev]"
7. Run mu::
python run.py
An alternative form is to type::
python -m mu
Or even::
mu-editor
.. warning::
These instructions for Raspberry Pi only work with Raspbian version
"Stretch".
If you use ``pip`` to install Mu on a Raspberry Pi, then the PyQt related
packages will not be automatically installed from PyPI. This is why you
need to use ``apt-get`` to install them instead, as described in step 1,
above.
Using ``make``
++++++++++++++
There is a Makefile that helps with most of the common workflows associated
with development. Typing ``make`` on its own will list the options thus::
$ make
There is no default Makefile target right now. Try:
make run - run the local development version of Mu.
make clean - reset the project and remove auto-generated assets.
make pyflakes - run the PyFlakes code checker.
make pycodestyle - run the PEP8 style checker.
make test - run the test suite.
make coverage - view a report on test coverage.
make check - run all the checkers and tests.
make dist - make a dist/wheel for the project.
make publish-test - publish the project to PyPI test instance.
make publish-live - publish the project to PyPI production.
make docs - run sphinx to create project documentation.
make translate - create a messages.pot file for translations.
make translateall - as with translate but for all API strings.
make win32 - create a 32bit Windows installer for Mu.
make win64 - create a 64bit Windows installer for Mu.
make macos - create a macOS native application for Mu.
make video - create an mp4 video representing code commits.
Everything should be working if you can successfully run::
make check
(You'll see the results from various code quality tools, the test suite and
code coverage.)
.. note::
On Windows there is a ``make.cmd`` file that works in a similar way to the
``make`` command on Unix-like operating systems.
.. warning::
In order to use the MicroPython REPL via USB serial you may need to add
yourself to the ``dialout`` group on Linux.
Before Submitting
+++++++++++++++++
Before contributing code please make sure you've read :doc:`contributing` and
follow the checklist for contributing changes. We expect everyone participating
in the development of Mu to act in accordance with the PSF's
:doc:`code_of_conduct`.
|
