Make it possible to connect to a subprocess to get the sys path

jedi/api/virtualenv.py

@@ -1,5 +1,6 @@
 import os
 import re
+import sys
 import sysconfig
 from subprocess import CalledProcessError
 from collections import namedtuple
@@ -7,7 +8,7 @@ from collections import namedtuple
 from jedi._compatibility import check_output
 from jedi.evaluate.project import Project
 from jedi.cache import memoize_method
-
+from jedi.evaluate.compiled.subprocess import get_subprocess
 
 _VersionInfo = namedtuple('VersionInfo', 'major minor micro')
 
@@ -28,6 +29,10 @@ class Environment(object):
     def get_project(self):
         return Project(self.get_sys_path())
 
+    def get_subprocess(self):
+        return get_subprocess(self._executable)
+
+    @memoize_method
     def get_sys_path(self):
         vars = {
             'base': self._path
@@ -38,35 +43,15 @@ class Environment(object):
         # on how the Python version was compiled (ENV variables).
         # If you omit -S when starting Python (normal case), additionally
         # site.py gets executed.
-        write
 
-        # venv
-        ['', '/usr/lib/python3.3', '/usr/lib/python3.3/plat-x86_64-linux-gnu',
-         '/usr/lib/python3.3/lib-dynload',
-         '/home/dave/source/python/virtenv/venv3.3/lib/python3.3/site-packages']
-
-        ['/usr/lib/python3.4', '/usr/lib/python3.4/plat-x86_64-linux-gnu',
-         '/usr/lib/python3.4/lib-dynload',
-         '/home/dave/source/stuff_cloudscale/rgw-metrics/venv/lib/python3.4/site-packages']
-
-        ['', '/usr/lib/python35.zip', '/usr/lib/python3.5',
-         '/usr/lib/python3.5/plat-x86_64-linux-gnu',
-         '/usr/lib/python3.5/lib-dynload',
-         '/home/dave/source/python/virtenv/venv3.5/lib/python3.5/site-packages']
+        return self.get_subprocess().get_sys_path()
 
 
-        {'purelib': '{base}/local/lib/python{py_version_short}/dist-packages',
-         'stdlib': '{base}/lib/python{py_version_short}',
-         'scripts': '{base}/local/bin',
-         'platinclude': '{platbase}/local/include/python{py_version_short}',
-         'include': '{base}/local/include/python{py_version_short}',
-         'data': '{base}/local',
-         'platstdlib': '{platbase}/lib/python{py_version_short}',
-         'platlib': '{platbase}/local/lib/python{py_version_short}/dist-packages'}
-        return [] + additional_paths
-
-    def _get_long_running_process(self):
-        return process
+class DefaultEnvironment(Environment):
+    def __init__(self, script_path):
+        # TODO make this usable
+        path = script_path
+        super(DefaultEnvironment, self).__init__(path, sys.executable)
 
 
 def find_virtualenvs(paths=None):
@@ -95,11 +80,11 @@ def _get_executable_path(path):
 
 def _get_version(executable):
     try:
-        output = check_output(executable, '--version')
+        output = check_output([executable, '--version'])
     except (CalledProcessError, OSError):
         raise NoVirtualEnv()
 
-    match = re.match(r'Python (\d+)\.(\d+)\.(\d+)', output)
+    match = re.match(rb'Python (\d+)\.(\d+)\.(\d+)', output)
     if match is None:
         raise NoVirtualEnv()