Rename get_prefixed_libs() to get_isolated_environment_lib_paths()

Since this function is only used for creating isolated environments,
rename it to better describe what it does.  This avoids needing to
think about why the implementation uses the "venv" paths scheme even
when pip is not running in a virtual environment.

src/pip/_internal/build_env.py

@@ -18,7 +18,11 @@ from pip._vendor.packaging.version import Version
 
 from pip import __file__ as pip_location
 from pip._internal.cli.spinners import open_spinner
-from pip._internal.locations import get_platlib, get_prefixed_libs, get_purelib
+from pip._internal.locations import (
+    get_isolated_environment_lib_paths,
+    get_platlib,
+    get_purelib,
+)
 from pip._internal.metadata import get_default_environment, get_environment
 from pip._internal.utils.subprocess import call_subprocess
 from pip._internal.utils.temp_dir import TempDirectory, tempdir_kinds
@@ -37,7 +41,7 @@ class _Prefix:
             "nt" if os.name == "nt" else "posix_prefix",
             vars={"base": path, "platbase": path},
         )["scripts"]
-        self.lib_dirs = get_prefixed_libs(path)
+        self.lib_dirs = get_isolated_environment_lib_paths(path)
 
 
 def get_runnable_pip() -> str:

src/pip/_internal/locations/__init__.py

@@ -27,7 +27,7 @@ __all__ = [
     "get_bin_user",
     "get_major_minor_version",
     "get_platlib",
-    "get_prefixed_libs",
+    "get_isolated_environment_lib_paths",
     "get_purelib",
     "get_scheme",
     "get_src_prefix",
@@ -482,13 +482,13 @@ def _looks_like_apple_library(path: str) -> bool:
     return path == f"/Library/Python/{get_major_minor_version()}/site-packages"
 
 
-def get_prefixed_libs(prefix: str) -> List[str]:
+def get_isolated_environment_lib_paths(prefix: str) -> List[str]:
     """Return the lib locations under ``prefix``."""
-    new_pure, new_plat = _sysconfig.get_prefixed_libs(prefix)
+    new_pure, new_plat = _sysconfig.get_isolated_environment_lib_paths(prefix)
     if _USE_SYSCONFIG:
         return _deduplicated(new_pure, new_plat)
 
-    old_pure, old_plat = _distutils.get_prefixed_libs(prefix)
+    old_pure, old_plat = _distutils.get_isolated_environment_lib_paths(prefix)
     old_lib_paths = _deduplicated(old_pure, old_plat)
 
     # Apple's Python (shipped with Xcode and Command Line Tools) hard-code

src/pip/_internal/locations/_distutils.py

@@ -173,7 +173,7 @@ def get_platlib() -> str:
     return get_python_lib(plat_specific=True)
 
 
-def get_prefixed_libs(prefix: str) -> Tuple[str, str]:
+def get_isolated_environment_lib_paths(prefix: str) -> Tuple[str, str]:
     return (
         get_python_lib(plat_specific=False, prefix=prefix),
         get_python_lib(plat_specific=True, prefix=prefix),

src/pip/_internal/locations/_sysconfig.py

@@ -213,7 +213,7 @@ def get_platlib() -> str:
     return sysconfig.get_paths()["platlib"]
 
 
-def get_prefixed_libs(prefix: str) -> typing.Tuple[str, str]:
+def get_isolated_environment_lib_paths(prefix: str) -> typing.Tuple[str, str]:
     vars = {"base": prefix, "platbase": prefix}
     if "venv" in sysconfig.get_scheme_names():
         paths = sysconfig.get_paths(vars=vars, scheme="venv")