Add support for Python 3.15

CHANGELOG.md

@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Added
+
+- Added support for Python 3.15. ([#633](https://github.com/heroku/buildpacks-python/pull/633))
+
 ### Changed
 
 - Updated libcnb to 0.32.0, which includes OpenTelemetry crate upgrades. ([#629](https://github.com/heroku/buildpacks-python/pull/629))

src/python_version.rs

@@ -17,7 +17,7 @@ pub(crate) const DEFAULT_PYTHON_VERSION: RequestedPythonVersion = RequestedPytho
 pub(crate) const DEFAULT_PYTHON_FULL_VERSION: PythonVersion = LATEST_PYTHON_3_14;
 
 pub(crate) const OLDEST_SUPPORTED_PYTHON_3_MINOR_VERSION: u16 = 10;
-pub(crate) const NEWEST_SUPPORTED_PYTHON_3_MINOR_VERSION: u16 = 14;
+pub(crate) const NEWEST_SUPPORTED_PYTHON_3_MINOR_VERSION: u16 = 15;
 pub(crate) const NEXT_UNRELEASED_PYTHON_3_MINOR_VERSION: u16 =
     NEWEST_SUPPORTED_PYTHON_3_MINOR_VERSION + 1;
 
@@ -26,6 +26,7 @@ pub(crate) const LATEST_PYTHON_3_11: PythonVersion = PythonVersion::new(3, 11, 1
 pub(crate) const LATEST_PYTHON_3_12: PythonVersion = PythonVersion::new(3, 12, 15);
 pub(crate) const LATEST_PYTHON_3_13: PythonVersion = PythonVersion::new(3, 13, 16);
 pub(crate) const LATEST_PYTHON_3_14: PythonVersion = PythonVersion::new(3, 14, 8);
+pub(crate) const LATEST_PYTHON_3_15: PythonVersion = PythonVersion::new(3, 15, 0);
 
 /// The Python version that was requested for a project.
 #[derive(Clone, Debug, PartialEq)]
@@ -177,6 +178,7 @@ pub(crate) fn resolve_python_version(
         (3, 12, None) => Ok(LATEST_PYTHON_3_12),
         (3, 13, None) => Ok(LATEST_PYTHON_3_13),
         (3, 14, None) => Ok(LATEST_PYTHON_3_14),
+        (3, 15, None) => Ok(LATEST_PYTHON_3_15),
         (major, minor, Some(patch)) => Ok(PythonVersion::new(major, minor, patch)),
     }
 }

tests/fixtures/python_3.15/.python-version

@@ -0,0 +1 @@
+3.15

tests/python_version_test.rs

@@ -1,6 +1,6 @@
 use crate::python_version::{
     DEFAULT_PYTHON_FULL_VERSION, DEFAULT_PYTHON_VERSION, LATEST_PYTHON_3_10, LATEST_PYTHON_3_11,
-    LATEST_PYTHON_3_12, LATEST_PYTHON_3_13, LATEST_PYTHON_3_14,
+    LATEST_PYTHON_3_12, LATEST_PYTHON_3_13, LATEST_PYTHON_3_14, LATEST_PYTHON_3_15,
     NEWEST_SUPPORTED_PYTHON_3_MINOR_VERSION, PythonVersion,
 };
 use crate::tests::default_build_config;
@@ -59,6 +59,12 @@ fn python_3_14() {
     builds_with_python_version("tests/fixtures/python_3.14", &LATEST_PYTHON_3_14);
 }
 
+#[test]
+#[ignore = "integration test"]
+fn python_3_15() {
+    builds_with_python_version("tests/fixtures/python_3.15", &LATEST_PYTHON_3_15);
+}
+
 fn builds_with_python_version(fixture_path: &str, python_version: &PythonVersion) {
     let &PythonVersion {
         major,