Meson and ``distutils`` ways of doing things

.. _distutils-meson-equivalents:

Meson and distutils ways of doing things

Old workflows (numpy.distutils based):

The runtests.py file was removed in commit 0f73f92255253ec5dff2de5ca45d8d3bdda03f92 [#]_.

1. python runtests.py
2. python setup.py build_ext -i + export PYTHONPATH=/home/username/path/to/scipy/reporoot (and then edit pure Python code in SciPy and run it with python some_script.py).
3. python setup.py develop - this is similar to (2), except in-place build is made permanently visible in env.
4. python setup.py bdist_wheel + pip install dist/scipy*.whl - build wheel in current env (i.e. uses installed numpy, etc.) and install it.
5. pip install . - build wheel in an isolated build env against deps in pyproject.toml and install it. Note: be careful, this is usually not the correct command for development installs - typically you want to use (4) or pip install . -v --no-build-isolation.

New workflows (Meson and meson-python based):

1. spin
2. pip install -e . --no-build-isolation (see the meson-python docs)
3. the same as (2)
4. python -m build --no-isolation + pip install dist/scipy*.whl - see pypa/build <https://pypa-build.readthedocs.io/en/latest/>_.
5. pip install .

.. [#] Commit 0f73f92255253ec5dff2de5ca45d8d3bdda03f92 on GitHub <https://github.com/scipy/scipy/commit/0f73f92255253ec5dff2de5ca45d8d3bdda03f92>_.