commit | 8835ad4e02061bb3ff07293580b0986d2bb2cdb4 | [log] [tgz] |
---|---|---|
author | Eli Schwartz <eschwartz93@gmail.com> | Mon May 13 16:27:43 2024 -0400 |
committer | Eli Schwartz <eschwartz93@gmail.com> | Sun Jun 23 16:15:52 2024 -0400 |
tree | 2dcb0d4d4f673512b74d26c27f85a1d86ef1ec11 | |
parent | 8fe8b1d829f057c556143a658d3f26bc66c69ee8 [diff] |
msetup: fix regression under py3.13 causing profile.runctx to not write locals() "PEP 667: Consistent views of namespaces" caused locals() to be inconsistent between uses since it is now created afresh every time you invoke it and writes to it are dropped. `sys._getframe().f_locals` is equivalent but preserves writes (it doesn't create a new dict) and unfortunately doesn't help at all as it's documented to be a private implementation detail of CPython that "should be used for internal and specialized purposes only". Work around this by saving locals to a variable reference and both passing it into runctx and reusing it in lookups of the result. This works okay for both new and older versions of python. Per the documentation for locals(): > The contents of this dictionary should not be modified; changes may > not affect the values of local and free variables used by the > interpreter. So... lesson learned? :) This was introduced in commit c34ee374a77fb2dffff90364506ac0cbbb1f00de; before that, we still used locals() but only to pass local variables *in*. Bug: https://github.com/python/cpython/pull/115153
Latest Meson version supporting previous Python versions:
Meson is available on PyPi, so it can be installed with pip3 install meson
. The exact command to type to install with pip
can vary between systems, be sure to use the Python 3 version of pip
.
If you wish you can install it locally with the standard Python command:
python3 -m pip install meson
For builds using Ninja, Ninja can be downloaded directly from Ninja GitHub release page or via PyPi
python3 -m pip install ninja
More on Installing Meson build can be found at the getting meson page.
Meson can be run as a Python zip app. To generate the executable run the following command:
./packaging/create_zipapp.py --outfile meson.pyz --interpreter '/usr/bin/env python3' <source checkout>
Meson requires that you have a source directory and a build directory and that these two are different. In your source root must exist a file called meson.build
. To generate the build system run this command:
meson setup <source directory> <build directory>
Depending on how you obtained Meson the command might also be called meson.py
instead of plain meson
. In the rest of this document we are going to use the latter form.
You can omit either of the two directories, and Meson will substitute the current directory and autodetect what you mean. This allows you to do things like this:
cd <source root> meson setup builddir
To compile, cd into your build directory and type ninja
. To run unit tests, type ninja test
.
More on running Meson build system commands can be found at the running meson page or by typing meson --help
.
We love code contributions. See the contribution page on the website for details.
The channel to use is #mesonbuild
either via Matrix (web interface) or OFTC IRC.
More information about the Meson build system can be found at the project's home page.
Meson is a registered trademark of Jussi Pakkanen.