init

.venv/lib/python3.8/site-packages/virtualenv/info.py

@@ -0,0 +1,66 @@
+from __future__ import absolute_import, unicode_literals
+
+import logging
+import os
+import platform
+import sys
+import tempfile
+
+IMPLEMENTATION = platform.python_implementation()
+IS_PYPY = IMPLEMENTATION == "PyPy"
+IS_CPYTHON = IMPLEMENTATION == "CPython"
+PY3 = sys.version_info[0] == 3
+PY2 = sys.version_info[0] == 2
+IS_WIN = sys.platform == "win32"
+IS_MAC_ARM64 = sys.platform == "darwin" and platform.machine() == "arm64"
+ROOT = os.path.realpath(os.path.join(os.path.abspath(__file__), os.path.pardir, os.path.pardir))
+IS_ZIPAPP = os.path.isfile(ROOT)
+WIN_CPYTHON_2 = IS_CPYTHON and IS_WIN and PY2
+
+_CAN_SYMLINK = _FS_CASE_SENSITIVE = _CFG_DIR = _DATA_DIR = None
+
+
+def fs_is_case_sensitive():
+    global _FS_CASE_SENSITIVE
+
+    if _FS_CASE_SENSITIVE is None:
+        with tempfile.NamedTemporaryFile(prefix="TmP") as tmp_file:
+            _FS_CASE_SENSITIVE = not os.path.exists(tmp_file.name.lower())
+            logging.debug("filesystem is %scase-sensitive", "" if _FS_CASE_SENSITIVE else "not ")
+    return _FS_CASE_SENSITIVE
+
+
+def fs_supports_symlink():
+    global _CAN_SYMLINK
+
+    if _CAN_SYMLINK is None:
+        can = False
+        if hasattr(os, "symlink"):
+            if IS_WIN:
+                with tempfile.NamedTemporaryFile(prefix="TmP") as tmp_file:
+                    temp_dir = os.path.dirname(tmp_file.name)
+                    dest = os.path.join(temp_dir, "{}-{}".format(tmp_file.name, "b"))
+                    try:
+                        os.symlink(tmp_file.name, dest)
+                        can = True
+                    except (OSError, NotImplementedError):
+                        pass
+                logging.debug("symlink on filesystem does%s work", "" if can else " not")
+            else:
+                can = True
+        _CAN_SYMLINK = can
+    return _CAN_SYMLINK
+
+
+__all__ = (
+    "IS_PYPY",
+    "IS_CPYTHON",
+    "PY3",
+    "PY2",
+    "IS_WIN",
+    "fs_is_case_sensitive",
+    "fs_supports_symlink",
+    "ROOT",
+    "IS_ZIPAPP",
+    "WIN_CPYTHON_2",
+)