Replace `pyvenv.cfg`'s `home` key with `base-prefix` and `base-exec-prefix`

Feature or enhancement

Proposal:

The home key in pyvenv.cfg is used to specify the directory where the base Python executable is. During the Path Initialization, this directory, and consecutively its parents, is searched for stdlib landmarks to determine sys.base_prefix and sys.base_exec_prefix. Naturally, this isn't ideal, it would be better if pyvenv.cfg contained these values directly.

Proposed plan:

• Update venv to start setting the base-prefix and base-exec-prefix keys in pyvenv.cfg when creating/updating environments
• In getpath, use the base-prefix and base-exec-prefix keys to set the prefixes
• Deprecate specifying home, in pyvenv.cfg

Has this already been discussed elsewhere?

No response given

Links to previous discussion of this feature:

No response

まず venv 環境の作成および更新ロジックを読み、次に getpath の Path Initialization を追って、現在 pyvenv.cfg が sys.base_prefix と sys.base_exec_prefix をどのように決定しているかを確認します。新しい base-prefix キーと base-exec-prefix キーの書き込み方法と使用方法、home の非推奨化の方法を定義し、新しく作成された環境と更新された環境の両方を検証します。