feat: add interpreter_version_info to py_runtime

python/private/common/providers.bzl

@@ -45,7 +45,8 @@ def _PyRuntimeInfo_init(
         coverage_files = None,
         python_version,
         stub_shebang = None,
-        bootstrap_template = None):
+        bootstrap_template = None,
+        interpreter_version_info = None):
     if (interpreter_path and interpreter) or (not interpreter_path and not interpreter):
         fail("exactly one of interpreter or interpreter_path must be specified")
 
@@ -88,6 +89,7 @@ def _PyRuntimeInfo_init(
         "coverage_tool": coverage_tool,
         "files": files,
         "interpreter": interpreter,
+        "interpreter_version_info": interpreter_version_info,
         "interpreter_path": interpreter_path,
         "python_version": python_version,
         "stub_shebang": stub_shebang,
@@ -136,6 +138,11 @@ the same conventions as the standard CPython interpreter.
             "filesystem path to the interpreter on the target platform. " +
             "Otherwise, this is `None`."
         ),
+        "interpreter_version_info": (
+            "This is the version of the interpreter that this runtime provides. " +
+            "The list can contain the five components of the version number: major, minor, micro, releaselevel, and serial. " +
+            "This should match the format given by `sys.version_info`, however for simplicity the micro, releaselevel and serial values may be omitted."
+        ),
         "python_version": (
             "Indicates whether this runtime uses Python major version 2 or 3. " +
             "Valid values are (only) `\"PY2\"` and " +

python/private/common/py_runtime_rule.bzl

@@ -61,6 +61,10 @@ def _py_runtime_impl(ctx):
 
     python_version = ctx.attr.python_version
 
+    interpreter_version_info = ctx.attr.interpreter_version_info
+    if interpreter_version_info and len(interpreter_version_info) < 2:
+        fail("interpreter_version_info must have at least two values [major, minor]")
+
     # TODO: Uncomment this after --incompatible_python_disable_py2 defaults to true
     # if ctx.fragments.py.disable_py2 and python_version == "PY2":
     #     fail("Using Python 2 is not supported and disabled; see " +
@@ -75,10 +79,16 @@ def _py_runtime_impl(ctx):
         python_version = python_version,
         stub_shebang = ctx.attr.stub_shebang,
         bootstrap_template = ctx.file.bootstrap_template,
+        interpreter_version_info = interpreter_version_info,
     )
     builtin_py_runtime_info_kwargs = dict(py_runtime_info_kwargs)
+
+    # Pop this property as it does not exist on BuiltinPyRuntimeInfo
+    builtin_py_runtime_info_kwargs.pop("interpreter_version_info")
+
     if not IS_BAZEL_7_OR_HIGHER:
         builtin_py_runtime_info_kwargs.pop("bootstrap_template")
+
     return [
         PyRuntimeInfo(**py_runtime_info_kwargs),
         # Return the builtin provider for better compatibility.
@@ -196,6 +206,14 @@ platform runtime this attribute must not be set.
 For a platform runtime, this is the absolute path of a Python interpreter on
 the target platform. For an in-build runtime this attribute must not be set.
 """),
+        "interpreter_version_info": attr.string_list(
+            doc = """
+This is the version of the interpreter that this runtime provides.
+The list can contain the five components of the version number: major, minor, micro, releaselevel, and serial.
+This should match the format given by `sys.version_info`, however for simplicity the micro, releaselevel and serial values may be omitted.
+            """,
+            mandatory = False,
+        ),
         "python_version": attr.string(
             default = "PY3",
             values = ["PY2", "PY3"],

python/repositories.bzl

@@ -101,7 +101,8 @@ def _python_repository_impl(rctx):
 
     platform = rctx.attr.platform
     python_version = rctx.attr.python_version
-    python_short_version = python_version.rpartition(".")[0]
+    python_version_info = python_version.split(".")
+    python_short_version = "{0}.{1}".format(*python_version_info)
     release_filename = rctx.attr.release_filename
     urls = rctx.attr.urls or [rctx.attr.url]
     auth = get_auth(rctx, urls)
@@ -334,6 +335,7 @@ py_runtime(
     files = [":files"],
 {coverage_attr}
     interpreter = "{python_path}",
+    interpreter_version_info = {interpreter_version_info},
     python_version = "PY3",
 )
 
@@ -355,6 +357,7 @@ py_cc_toolchain(
         python_version = python_short_version,
         python_version_nodot = python_short_version.replace(".", ""),
         coverage_attr = coverage_attr_text,
+        interpreter_version_info = str(python_version_info),
     )
     rctx.delete("python")
     rctx.symlink(python_bin, "python")