Prefer sysconfig over distutils

distutils will be removed in python3.10, and is now deprecated.

src/virtualenv/create/describe.py

@@ -30,15 +30,15 @@ def bin_dir(self):
 
     @property
     def script_dir(self):
-        return self.dest / Path(self.interpreter.distutils_install["scripts"])
+        return Path(self.interpreter.sysconfig_path("scripts", config_var=self._config_vars))
 
     @property
     def purelib(self):
-        return self.dest / self.interpreter.distutils_install["purelib"]
+        return Path(self.interpreter.sysconfig_path("purelib", config_var=self._config_vars))
 
     @property
     def platlib(self):
-        return self.dest / self.interpreter.distutils_install["platlib"]
+        return Path(self.interpreter.sysconfig_path("platlib", config_var=self._config_vars))
 
     @property
     def libs(self):

src/virtualenv/create/via_global_ref/_virtualenv.py

@@ -9,7 +9,7 @@
 
 def patch_dist(dist):
     """
-    Distutils allows user to configure some arguments via a configuration file:
+    distutils allows user to configure some arguments via a configuration file:
     https://docs.python.org/3/install/index.html#distutils-configuration-files
 
     Some of this arguments though don't make sense in context of the virtual environment files, let's fix them up.

src/virtualenv/create/via_global_ref/builtin/cpython/cpython2.py

@@ -35,8 +35,8 @@ def host_include_marker(cls, interpreter):
 
     @property
     def include(self):
-        # the pattern include the distribution name too at the end, remove that via the parent call
-        return (self.dest / self.interpreter.distutils_install["headers"]).parent
+        # the pattern includes the distribution name too at the end, remove that via the parent call
+        return Path(self.interpreter.sysconfig_path("include", config_var=self._config_vars)).parent
 
     @classmethod
     def modules(cls):

src/virtualenv/create/via_global_ref/builtin/pypy/pypy2.py

@@ -41,7 +41,7 @@ def host_include_marker(cls, interpreter):
 
     @property
     def include(self):
-        return self.dest / self.interpreter.distutils_install["headers"]
+        return Path(self.interpreter.sysconfig_path("include", config_var=self._config_vars))
 
     @classmethod
     def modules(cls):

src/virtualenv/discovery/py_info.py

@@ -13,8 +13,6 @@
 import sys
 import sysconfig
 from collections import OrderedDict, namedtuple
-from distutils import dist
-from distutils.command.install import SCHEME_KEYS
 from string import digits
 
 VersionInfo = namedtuple("VersionInfo", ["major", "minor", "micro", "releaselevel", "serial"])
@@ -122,6 +120,11 @@ def _fast_get_system_executable(self):
     def _distutils_install():
         # follow https://github.com/pypa/pip/blob/main/src/pip/_internal/locations.py#L95
         # note here we don't import Distribution directly to allow setuptools to patch it
+        try:
+            from distutils import dist
+            from distutils.command.install import SCHEME_KEYS
+        except ImportError:
+            return {}
         d = dist.Distribution({"script_args": "--no-user-cfg"})  # conf files not parsed so they do not hijack paths
         if hasattr(sys, "_framework"):
             sys._framework = None  # disable macOS static paths for framework

tests/unit/discovery/py_info/test_py_info_exe_based_of.py

@@ -17,7 +17,7 @@ def test_discover_empty_folder(tmp_path, monkeypatch, session_app_data):
         CURRENT.discover_exe(session_app_data, prefix=str(tmp_path))
 
 
-BASE = (CURRENT.distutils_install["scripts"], ".")
+BASE = (Path(CURRENT.sysconfig_paths["scripts"]).name, ".")
 
 
 @pytest.mark.skipif(not fs_supports_symlink(), reason="symlink is not supported")