Add support for Python 3.8.20, 3.9.20, 3.10.15, 3.11.10 and 3.12.6 (#266)

Release notes:
https://blog.python.org/2024/09/python-3130rc2-3126-31110-31015-3920.html

Changelogs:
https://docs.python.org/release/3.8.20/whatsnew/changelog.html#python-3-8-20-final
https://docs.python.org/release/3.9.20/whatsnew/changelog.html#python-3-9-20-final
https://docs.python.org/release/3.10.15/whatsnew/changelog.html#python-3-10-15-final
https://docs.python.org/release/3.11.10/whatsnew/changelog.html#python-3-11-10-final
https://docs.python.org/release/3.12.6/whatsnew/changelog.html#python-3-12-6-final

Binary builds:
https://github.com/heroku/heroku-buildpack-python/actions/runs/10750205053/job/29818038722
https://github.com/heroku/heroku-buildpack-python/actions/runs/10751132694/job/29818059983
https://github.com/heroku/heroku-buildpack-python/actions/runs/10750206118
https://github.com/heroku/heroku-buildpack-python/actions/runs/10750206743
https://github.com/heroku/heroku-buildpack-python/actions/runs/10750207733

GUS-W-16690152.

Author: edmorley

CHANGELOG.md

@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Changed
+
+- Updated the default Python version from 3.12.5 to 3.12.6. ([#266](https://github.com/heroku/buildpacks-python/pull/266))
+
 ## [0.17.0] - 2024-09-04
 
 ### Added

README.md

@@ -43,7 +43,7 @@ To install a different version, add a `runtime.txt` file to your app's root dire
 
 ```term
 $ cat runtime.txt
-python-3.12.5
+python-3.12.6
 ```
 
 In the future this buildpack will also support specifying the Python version using:

src/python_version.rs

@@ -9,7 +9,7 @@ use std::path::Path;
 pub(crate) const DEFAULT_PYTHON_VERSION: PythonVersion = PythonVersion {
     major: 3,
     minor: 12,
-    patch: 5,
+    patch: 6,
 };
 
 /// Representation of a specific Python `X.Y.Z` version.

tests/fixtures/django_staticfiles_legacy_django/runtime.txt

@@ -1 +1 @@
-python-3.10.14
+python-3.10.15

tests/fixtures/python_3.10/runtime.txt

@@ -1 +1 @@
-python-3.10.14
+python-3.10.15

tests/fixtures/python_3.11/runtime.txt

@@ -1 +1 @@
-python-3.11.9
+python-3.11.10

tests/fixtures/python_3.12/runtime.txt

@@ -1 +1 @@
-python-3.12.5
+python-3.12.6

tests/fixtures/python_3.8/runtime.txt

@@ -1 +1 @@
-python-3.8.19
+python-3.8.20

tests/fixtures/python_3.9/runtime.txt

@@ -1 +1 @@
-python-3.9.19
+python-3.9.20

tests/mod.rs

@@ -15,11 +15,11 @@ use std::env;
 use std::path::Path;
 
 const LATEST_PYTHON_3_7: &str = "3.7.17";
-const LATEST_PYTHON_3_8: &str = "3.8.19";
-const LATEST_PYTHON_3_9: &str = "3.9.19";
-const LATEST_PYTHON_3_10: &str = "3.10.14";
-const LATEST_PYTHON_3_11: &str = "3.11.9";
-const LATEST_PYTHON_3_12: &str = "3.12.5";
+const LATEST_PYTHON_3_8: &str = "3.8.20";
+const LATEST_PYTHON_3_9: &str = "3.9.20";
+const LATEST_PYTHON_3_10: &str = "3.10.15";
+const LATEST_PYTHON_3_11: &str = "3.11.10";
+const LATEST_PYTHON_3_12: &str = "3.12.6";
 const DEFAULT_PYTHON_VERSION: &str = LATEST_PYTHON_3_12;
 
 const DEFAULT_BUILDER: &str = "heroku/builder:24";

tests/pip_test.rs

@@ -188,18 +188,21 @@ fn pip_cache_previous_buildpack_version() {
                     To use a different version, see: https://devcenter.heroku.com/articles/python-runtimes
                     
                     [Installing Python]
-                    Using cached Python {DEFAULT_PYTHON_VERSION}
+                    Discarding cached Python 3.12.5 since:
+                     - The Python version has changed from 3.12.5 to {DEFAULT_PYTHON_VERSION}
+                    Installing Python {DEFAULT_PYTHON_VERSION}
                     
                     [Installing pip]
-                    Using cached pip {PIP_VERSION}
+                    Discarding cached pip {PIP_VERSION}
+                    Installing pip {PIP_VERSION}
                     
                     [Installing dependencies using pip]
-                    Using cached pip download/wheel cache
+                    Discarding cached pip download/wheel cache
                     Creating virtual environment
                     Running 'pip install -r requirements.txt'
                     Collecting typing-extensions==4.12.2 (from -r requirements.txt (line 2))
-                      Using cached typing_extensions-4.12.2-py3-none-any.whl.metadata (3.0 kB)
-                    Using cached typing_extensions-4.12.2-py3-none-any.whl (37 kB)
+                      Downloading typing_extensions-4.12.2-py3-none-any.whl.metadata (3.0 kB)
+                    Downloading typing_extensions-4.12.2-py3-none-any.whl (37 kB)
                     Installing collected packages: typing-extensions
                     Successfully installed typing-extensions-4.12.2
                 "}

tests/poetry_test.rs

@@ -171,17 +171,23 @@ fn poetry_cache_previous_buildpack_version() {
                     To use a different version, see: https://devcenter.heroku.com/articles/python-runtimes
                     
                     [Installing Python]
-                    Using cached Python {DEFAULT_PYTHON_VERSION}
+                    Discarding cached Python 3.12.5 since:
+                     - The Python version has changed from 3.12.5 to {DEFAULT_PYTHON_VERSION}
+                    Installing Python {DEFAULT_PYTHON_VERSION}
                     
                     [Installing Poetry]
-                    Using cached Poetry {POETRY_VERSION}
+                    Discarding cached Poetry {POETRY_VERSION}
+                    Installing Poetry {POETRY_VERSION}
                     
                     [Installing dependencies using Poetry]
-                    Using cached virtual environment
+                    Discarding cached virtual environment
+                    Creating virtual environment
                     Running 'poetry install --sync --only main'
                     Installing dependencies from lock file
                     
-                    No dependencies to install or update
+                    Package operations: 1 install, 0 updates, 0 removals
+                    
+                      - Installing typing-extensions (4.12.2)
                 "}
             );
         });