♻️ refactor(discovery): extract py_discovery as self-contained package

pyproject.toml

@@ -49,6 +49,7 @@ dependencies = [
   "filelock>=3.24.2,<4; python_version>='3.10'",
   "importlib-metadata>=6.6; python_version<'3.8'",
   "platformdirs>=3.9.1,<5",
+  "python-discovery>=1",
   "typing-extensions>=4.13.2; python_version<'3.11'",
 ]
 urls.Documentation = "https://virtualenv.pypa.io"

src/virtualenv/activation/activator.py

@@ -8,9 +8,10 @@
     from argparse import ArgumentParser
     from pathlib import Path
 
+    from python_discovery import PythonInfo
+
     from virtualenv.config.cli.parser import VirtualEnvOptions
     from virtualenv.create.creator import Creator
-    from virtualenv.discovery.py_info import PythonInfo
 
 
 class Activator(ABC):

src/virtualenv/create/creator.py

@@ -15,13 +15,13 @@
 if TYPE_CHECKING:
     from argparse import ArgumentParser
 
+    from python_discovery import PythonInfo
+
     from virtualenv.app_data.base import AppData
     from virtualenv.config.cli.parser import VirtualEnvOptions
-    from virtualenv.discovery.py_info import PythonInfo
 
-from virtualenv.discovery.cached_py_info import LogCmd
 from virtualenv.util.path import safe_delete
-from virtualenv.util.subprocess import run_cmd
+from virtualenv.util.subprocess import LogCmd, run_cmd
 from virtualenv.version import __version__
 
 from .pyenv_cfg import PyEnvCfg
@@ -198,11 +198,13 @@ def add_cachedir_tag(self):
 
     def set_pyenv_cfg(self):
         self.pyenv_cfg.content = OrderedDict()
-        self.pyenv_cfg["home"] = os.path.dirname(os.path.abspath(self.interpreter.system_executable))
+        system_executable = self.interpreter.system_executable or self.interpreter.executable
+        assert system_executable is not None  # noqa: S101
+        self.pyenv_cfg["home"] = os.path.dirname(os.path.abspath(system_executable))
         self.pyenv_cfg["implementation"] = self.interpreter.implementation
         self.pyenv_cfg["version_info"] = ".".join(str(i) for i in self.interpreter.version_info)
         self.pyenv_cfg["version"] = ".".join(str(i) for i in self.interpreter.version_info[:3])
-        self.pyenv_cfg["executable"] = os.path.realpath(self.interpreter.system_executable)
+        self.pyenv_cfg["executable"] = os.path.realpath(system_executable)
         self.pyenv_cfg["command"] = f"{sys.executable} -m virtualenv {self.dest}"
         self.pyenv_cfg["virtualenv"] = __version__
         if self.prompt is not None:

src/virtualenv/create/via_global_ref/venv.py

@@ -3,8 +3,9 @@
 import logging
 from copy import copy
 
+from python_discovery import PythonInfo
+
 from virtualenv.create.via_global_ref.store import handle_store_python
-from virtualenv.discovery.py_info import PythonInfo
 from virtualenv.util.error import ProcessCallFailedError
 from virtualenv.util.path import ensure_dir
 from virtualenv.util.subprocess import run_cmd