diff --git a/python/private/python_register_toolchains.bzl b/python/private/python_register_toolchains.bzl

index 98c8e5bf..fc533001 100644

--- a/python/private/python_register_toolchains.bzl

+++ b/python/private/python_register_toolchains.bzl

@@ -86,6 +86,7 @@ def python_register_toolchains(

minor_mapping = minor_mapping or MINOR_MAPPING

python_version = full_version(version = python_version, minor_mapping = minor_mapping)

+ python_version_kind = kwargs.pop("python_version_kind", "")

toolchain_repo_name = "{name}_toolchains".format(name = name)

@@ -165,6 +166,7 @@ def python_register_toolchains(

toolchain_aliases(

name = name,

python_version = python_version,

+ python_version_kind = python_version_kind,

user_repository_name = name,

platforms = loaded_platforms,

)

diff --git a/python/private/toolchains_repo.bzl b/python/private/toolchains_repo.bzl

index d21fb53a..a5271c18 100644

--- a/python/private/toolchains_repo.bzl

+++ b/python/private/toolchains_repo.bzl

@@ -130,6 +130,9 @@ def _toolchain_aliases_impl(rctx):

(os_name, arch) = _get_host_os_arch(rctx, logger)

host_platform = _get_host_platform(os_name, arch)

+ python_version_kind = rctx.attr.python_version_kind

+ if python_version_kind == "ft":

+ host_platform += "-freethreaded"

is_windows = (os_name == WINDOWS_NAME)

python3_binary_path = "python.exe" if is_windows else "bin/python3"

@@ -233,6 +236,10 @@ actions.""",

doc = "List of platforms for which aliases shall be created",

),

"python_version": attr.string(doc = "The Python version."),

+ "python_version_kind": attr.string(

+ doc = "Python version kind, e.g. ft (free-threaded)",

+ default = ""

+ ),

"user_repository_name": attr.string(

mandatory = True,

doc = "The base name for all created repositories, like 'python38'.",