Add a Python 3.9 container (jsc#PED-10823)

src/bci_build/package/__init__.py

@@ -1650,6 +1650,7 @@ def generate_disk_size_constraints(size_gb: int) -> str:
 from .postfix import POSTFIX_CONTAINERS  # noqa: E402
 from .postgres import POSTGRES_CONTAINERS  # noqa: E402
 from .python import PYTHON_3_6_CONTAINERS  # noqa: E402
+from .python import PYTHON_3_9_CONTAINERS  # noqa: E402
 from .python import PYTHON_3_11_CONTAINERS  # noqa: E402
 from .python import PYTHON_3_12_CONTAINERS  # noqa: E402
 from .python import PYTHON_TW_CONTAINERS  # noqa: E402
@@ -1664,6 +1665,7 @@ def generate_disk_size_constraints(size_gb: int) -> str:
         *BASE_CONTAINERS,
         *PYTHON_3_12_CONTAINERS,
         *PYTHON_3_6_CONTAINERS,
+        *PYTHON_3_9_CONTAINERS,
         *PYTHON_3_11_CONTAINERS,
         *PYTHON_TW_CONTAINERS,
         *THREE_EIGHT_NINE_DS_CONTAINERS,

src/bci_build/package/python.py

@@ -11,12 +11,14 @@
 from bci_build.package import Replacement
 from bci_build.package import SupportLevel
 
-_PYTHON_VERSIONS = Literal["3.6", "3.10", "3.11", "3.12"]
+_PYTHON_VERSIONS = Literal["3.6", "3.9", "3.10", "3.11", "3.12"]
 
 # The lifecycle is handcrafted by the SUSE Python maintainers
 _SLE_15_PYTHON_SUPPORT_ENDS: dict[_PYTHON_VERSIONS, datetime.date | None] = {
     # Actually end of general support of SLE15, SP7 is the last known SP
     "3.6": _SUPPORTED_UNTIL_SLE[OsVersion.SP7],
+    # per jsc#PED-10823
+    "3.9": datetime.datetime(2027, 12, 31),
     # only openSUSE
     "3.10": None,
     # https://peps.python.org/pep-0664/ defines 2027/10/31, SUSE offers until end of the year
@@ -106,6 +108,14 @@ def _get_python_kwargs(py3_ver: _PYTHON_VERSIONS, os_version: OsVersion):
     for os_version in (OsVersion.SP6,)
 )
 
+PYTHON_3_9_CONTAINERS = (
+    PythonDevelopmentContainer(
+        **_get_python_kwargs("3.9", os_version),
+        package_name="python-3.9-image",
+    )
+    for os_version in (OsVersion.SP6,)
+)
+
 _PYTHON_TW_VERSIONS: tuple[_PYTHON_VERSIONS, ...] = ("3.10", "3.12", "3.11")
 PYTHON_TW_CONTAINERS = (
     PythonDevelopmentContainer(