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71687cf | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 | # Copyright (C) 2012 Anaconda, Inc
# SPDX-License-Identifier: BSD-3-Clause
"""Detect whether this is Windows."""
from __future__ import annotations
from typing import TYPE_CHECKING
from ...base.context import context
from .. import hookimpl
from ..types import CondaVirtualPackage
if TYPE_CHECKING:
from collections.abc import Iterable
def win_version() -> str | None:
dist_name, dist_version = context.os_distribution_name_version
if dist_name != "Windows":
# dist_version is only valid if we are on Windows
# this happens with `CONDA_SUBDIR=win-*`/`--platform=win-*` on a non-Windows machine
dist_version = None
return dist_version
@hookimpl
def conda_virtual_packages() -> Iterable[CondaVirtualPackage]:
if not context.subdir.startswith("win-"):
return
# 1: __win==VERSION=0
yield CondaVirtualPackage(
name="win",
version=win_version,
build=None,
override_entity="version",
# empty_override=NULL, # falsy override → skip __win
)
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