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Drop support for python < 3.10 #15408

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3 changes: 3 additions & 0 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -16,6 +16,9 @@ build system.
- [Ninja](https://ninja-build.org) (version 1.8.2 or newer)

Latest Meson version supporting previous Python versions:
- Python 3.9: **1.11**
- Python 3.8: **1.11**
- Python 3.7: **1.11**
- Python 3.6: **0.61.5**
- Python 3.5: **0.56.2**
- Python 3.4: **0.45.1**
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5 changes: 4 additions & 1 deletion docs/markdown/FAQ.md
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Expand Up @@ -345,7 +345,10 @@ bug fixes.

- python 3.5: [supported through Meson 0.56.2](Release-notes-for-0.56.0.md#python-35-support-will-be-dropped-in-the-next-release)
- python 3.6: [supported through Meson 0.61.5](Release-notes-for-0.61.0.md#python-36-support-will-be-dropped-in-the-next-release)
- python 3.7: currently actively supported by Meson
- python 3.7: [supported through Meson 1.11.x](Release-notes-for-1.11.0.md#last-major-version-supporting-python-37-38-and-39)
- python 3.8: [supported through Meson 1.11.x](Release-notes-for-1.11.0.md#last-major-version-supporting-python-37-38-and-39)
- python 3.9: [supported through Meson 1.11.x](Release-notes-for-1.11.0.md#last-major-version-supporting-python-37-38-and-39)
- python 3.10: Currently supported

We encourage projects to support a wide range of Meson versions if they are not
actually using the latest features anyway. In many, many cases it is quite
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5 changes: 5 additions & 0 deletions docs/markdown/snippets/python-310-required.md
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@@ -0,0 +1,5 @@
## Last major version supporting Python 3.7, 3.8, and 3.9

Python older than 3.10 is now EOL, and Meson will drop support for these
versions in the next major release, and will freely use features from 3.8, 3.9
and 3.10. Support for these versions will remain for the 1.10.x series.
6 changes: 3 additions & 3 deletions mesonbuild/mesonmain.py
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Expand Up @@ -187,7 +187,7 @@ def run(self, args: T.List[str]) -> int:
# support for old python. If this is already the oldest supported version, then
# this can never be true and does nothing.
pending_python_deprecation_notice = \
command in {'setup', 'compile', 'test', 'install'} and sys.version_info < (3, 7)
command in {'setup', 'compile', 'test', 'install'} and sys.version_info < (3, 10)

try:
return options.run_func(options)
Expand All @@ -198,8 +198,8 @@ def run(self, args: T.List[str]) -> int:
mlog.warning('Running the setup command as `meson [options]` instead of '
'`meson setup [options]` is ambiguous and deprecated.', fatal=False)
if pending_python_deprecation_notice:
mlog.notice('You are using Python 3.6 which is EOL. Starting with v0.62.0, '
'Meson will require Python 3.7 or newer', fatal=False)
mlog.notice(f'You are using Python 3.{sys.version_info.minor} which is EOL. Starting with v1.12.0, '
'Meson will require Python 3.10 or newer', fatal=False)
mlog.shutdown()

def run_script_command(script_name: str, script_args: T.List[str]) -> int:
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