First commit

1 files changed, 92 insertions, 0 deletions

diff --git a/venv/lib/python3.7/site-packages/pip-10.0.1-py3.7.egg/pip/_internal/build_env.py b/venv/lib/python3.7/site-packages/pip-10.0.1-py3.7.egg/pip/_internal/build_env.py
new file mode 100644
index 0000000..8ad7735
--- /dev/null
+++ b/venv/lib/python3.7/site-packages/pip-10.0.1-py3.7.egg/pip/_internal/build_env.py
@@ -0,0 +1,92 @@
+"""Build Environment used for isolation during sdist building

+"""

+

+import os

+from distutils.sysconfig import get_python_lib

+from sysconfig import get_paths

+

+from pip._internal.utils.temp_dir import TempDirectory

+

+

+class BuildEnvironment(object):

+    """Creates and manages an isolated environment to install build deps

+    """

+

+    def __init__(self, no_clean):

+        self._temp_dir = TempDirectory(kind="build-env")

+        self._no_clean = no_clean

+

+    @property

+    def path(self):

+        return self._temp_dir.path

+

+    def __enter__(self):

+        self._temp_dir.create()

+

+        self.save_path = os.environ.get('PATH', None)

+        self.save_pythonpath = os.environ.get('PYTHONPATH', None)

+        self.save_nousersite = os.environ.get('PYTHONNOUSERSITE', None)

+

+        install_scheme = 'nt' if (os.name == 'nt') else 'posix_prefix'

+        install_dirs = get_paths(install_scheme, vars={

+            'base': self.path,

+            'platbase': self.path,

+        })

+

+        scripts = install_dirs['scripts']

+        if self.save_path:

+            os.environ['PATH'] = scripts + os.pathsep + self.save_path

+        else:

+            os.environ['PATH'] = scripts + os.pathsep + os.defpath

+

+        # Note: prefer distutils' sysconfig to get the

+        # library paths so PyPy is correctly supported.

+        purelib = get_python_lib(plat_specific=0, prefix=self.path)

+        platlib = get_python_lib(plat_specific=1, prefix=self.path)

+        if purelib == platlib:

+            lib_dirs = purelib

+        else:

+            lib_dirs = purelib + os.pathsep + platlib

+        if self.save_pythonpath:

+            os.environ['PYTHONPATH'] = lib_dirs + os.pathsep + \

+                self.save_pythonpath

+        else:

+            os.environ['PYTHONPATH'] = lib_dirs

+

+        os.environ['PYTHONNOUSERSITE'] = '1'

+

+        return self.path

+

+    def __exit__(self, exc_type, exc_val, exc_tb):

+        if not self._no_clean:

+            self._temp_dir.cleanup()

+

+        def restore_var(varname, old_value):

+            if old_value is None:

+                os.environ.pop(varname, None)

+            else:

+                os.environ[varname] = old_value

+

+        restore_var('PATH', self.save_path)

+        restore_var('PYTHONPATH', self.save_pythonpath)

+        restore_var('PYTHONNOUSERSITE', self.save_nousersite)

+

+    def cleanup(self):

+        self._temp_dir.cleanup()

+

+

+class NoOpBuildEnvironment(BuildEnvironment):

+    """A no-op drop-in replacement for BuildEnvironment

+    """

+

+    def __init__(self, no_clean):

+        pass

+

+    def __enter__(self):

+        pass

+

+    def __exit__(self, exc_type, exc_val, exc_tb):

+        pass

+

+    def cleanup(self):

+        pass