mirror of
https://gitlab.com/qemu-project/qemu.git
synced 2024-11-06 15:56:53 +03:00
5591b74511
Python 3.6 was EOL 2021-12-31. Newer versions of upstream libraries have begun dropping support for this version and it is becoming more cumbersome to support. Avocado-framework and qemu.qmp each have their own reasons for wanting to drop Python 3.6, but won't until QEMU does. Versions of Python available in our supported build platforms as of today, with optional versions available in parentheses: openSUSE Leap 15.4: 3.6.15 (3.9.10, 3.10.2) CentOS Stream 8: 3.6.8 (3.8.13, 3.9.16) CentOS Stream 9: 3.9.13 Fedora 36: 3.10 Fedora 37: 3.11 Debian 11: 3.9.2 Alpine 3.14, 3.15: 3.9.16 Alpine 3.16, 3.17: 3.10.10 Ubuntu 20.04 LTS: 3.8.10 Ubuntu 22.04 LTS: 3.10.4 NetBSD 9.3: 3.9.13* FreeBSD 12.4: 3.9.16 FreeBSD 13.1: 3.9.16 OpenBSD 7.2: 3.9.16 Note: Our VM tests install 3.9 explicitly for FreeBSD and 3.10 for NetBSD; the default for "python" or "python3" in FreeBSD is 3.9.16. NetBSD does not appear to have a default meta-package, but offers several options, the lowest of which is 3.7.15. "python39" appears to be a pre-requisite to one of the other packages we request in tests/vm/netbsd. pip, ensurepip and other Python essentials are currently only available for Python 3.10 for NetBSD. CentOS and OpenSUSE support parallel installation of multiple Python interpreters, and binaries in /usr/bin will always use Python 3.6. However, the newly introduced support for virtual environments ensures that all build steps that execute QEMU Python code use a single interpreter. Since it is safe to under our supported platform policy, bump our minimum supported version of Python to 3.7. Signed-off-by: John Snow <jsnow@redhat.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Message-Id: <20230511035435.734312-24-jsnow@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> |
||
---|---|---|
.. | ||
qemu | ||
scripts | ||
tests | ||
wheels | ||
.gitignore | ||
avocado.cfg | ||
Makefile | ||
MANIFEST.in | ||
PACKAGE.rst | ||
README.rst | ||
setup.cfg | ||
setup.py | ||
VERSION |
QEMU Python Tooling =================== This directory houses Python tooling used by the QEMU project to build, configure, and test QEMU. It is organized by namespace (``qemu``), and then by package (e.g. ``qemu/machine``, ``qemu/qmp``, etc). ``setup.py`` is used by ``pip`` to install this tooling to the current environment. ``setup.cfg`` provides the packaging configuration used by ``setup.py``. You will generally invoke it by doing one of the following: 1. ``pip3 install .`` will install these packages to your current environment. If you are inside a virtual environment, they will install there. If you are not, it will attempt to install to the global environment, which is **not recommended**. 2. ``pip3 install --user .`` will install these packages to your user's local python packages. If you are inside of a virtual environment, this will fail; you want the first invocation above. If you append the ``--editable`` or ``-e`` argument to either invocation above, pip will install in "editable" mode. This installs the package as a forwarder ("qemu.egg-link") that points to the source tree. In so doing, the installed package always reflects the latest version in your source tree. Installing ".[devel]" instead of "." will additionally pull in required packages for testing this package. They are not runtime requirements, and are not needed to simply use these libraries. Running ``make develop`` will pull in all testing dependencies and install QEMU in editable mode to the current environment. (It is a shortcut for ``pip3 install -e .[devel]``.) See `Installing packages using pip and virtual environments <https://packaging.python.org/guides/installing-using-pip-and-virtual-environments/>`_ for more information. Using these packages without installing them -------------------------------------------- These packages may be used without installing them first, by using one of two tricks: 1. Set your PYTHONPATH environment variable to include this source directory, e.g. ``~/src/qemu/python``. See https://docs.python.org/3/using/cmdline.html#envvar-PYTHONPATH 2. Inside a Python script, use ``sys.path`` to forcibly include a search path prior to importing the ``qemu`` namespace. See https://docs.python.org/3/library/sys.html#sys.path A strong downside to both approaches is that they generally interfere with static analysis tools being able to locate and analyze the code being imported. Package installation also normally provides executable console scripts, so that tools like ``qmp-shell`` are always available via $PATH. To invoke them without installation, you can invoke e.g.: ``> PYTHONPATH=~/src/qemu/python python3 -m qemu.qmp.qmp_shell`` The mappings between console script name and python module path can be found in ``setup.cfg``. Files in this directory ----------------------- - ``qemu/`` Python 'qemu' namespace package source directory. - ``tests/`` Python package tests directory. - ``avocado.cfg`` Configuration for the Avocado test-runner. Used by ``make check`` et al. - ``Makefile`` provides some common testing/installation invocations. Try ``make help`` to see available targets. - ``MANIFEST.in`` is read by python setuptools, it specifies additional files that should be included by a source distribution. - ``PACKAGE.rst`` is used as the README file that is visible on PyPI.org. - ``README.rst`` you are here! - ``VERSION`` contains the PEP-440 compliant version used to describe this package; it is referenced by ``setup.cfg``. - ``setup.cfg`` houses setuptools package configuration. - ``setup.py`` is the setuptools installer used by pip; See above.