Fix python restricted dependencies not being checked against virtualenv

CHANGELOG.md

@@ -13,7 +13,8 @@
 
 
 ### Fixed
 ### Fixed
 
 
-- Fixed handking of post releases.
+- Fixed handling of post releases.
+- Fixed python restricted dependencies not being checked agaisnt virtualenv version.
 
 
 
 
 ## [0.4.2] - 2018-03-10
 ## [0.4.2] - 2018-03-10

poetry/installation/installer.py

@@ -379,7 +379,7 @@ class Installer:
                 continue
                 continue
 
 
             parser = VersionParser()
             parser = VersionParser()
-            python = '.'.join([str(i) for i in sys.version_info[:3]])
+            python = '.'.join([str(i) for i in self._io.venv.version_info[:3]])
             if 'python' in package.requirements:
             if 'python' in package.requirements:
                 python_constraint = parser.parse_constraints(
                 python_constraint = parser.parse_constraints(
                     package.requirements['python']
                     package.requirements['python']

poetry/utils/venv.py

@@ -24,6 +24,7 @@ class Venv:
 
 
     def __init__(self, venv=None):
     def __init__(self, venv=None):
         self._venv = venv
         self._venv = venv
+        self._version_info = None
 
 
     @classmethod
     @classmethod
     def create(cls) -> 'Venv':
     def create(cls) -> 'Venv':
@@ -89,6 +90,21 @@ class Venv:
         """
         """
         return self._bin('pip')
         return self._bin('pip')
 
 
+    @property
+    def version_info(self):
+        if self._version_info is not None:
+            return self._version_info
+
+        if not self.is_venv():
+            self._version_info = sys.version_info
+        else:
+            output = self.run('python', '--version')
+
+            version = output.split(' ')
+            self._version_info = version[1].strip().split('.')
+
+        return self._version_info
+
     def run(self, bin: str, *args, **kwargs) -> str:
     def run(self, bin: str, *args, **kwargs) -> str:
         """
         """
         Run a command inside the virtual env.
         Run a command inside the virtual env.