Fix generic environments command execution

poetry/console/commands/env/info.py

@@ -33,8 +33,6 @@ class EnvInfoCommand(Command):
         self._display_complete_info(env)
 
     def _display_complete_info(self, env: "Env") -> None:
-        from poetry.utils.env import GenericEnv
-
         env_python_version = ".".join(str(s) for s in env.version_info[:3])
         self.line("")
         self.line("<b>Virtualenv</b>")
@@ -60,7 +58,7 @@ class EnvInfoCommand(Command):
 
         self.line("")
 
-        system_env = GenericEnv(env.base)
+        system_env = env.parent_env
         self.line("<b>System</b>")
         self.line(
             "\n".join(

poetry/utils/env.py

@@ -762,7 +762,7 @@ class EnvManager:
 
         self.remove_venv(venv)
 
-        return VirtualEnv(venv)
+        return VirtualEnv(venv, venv)
 
     def create_venv(
         self,
@@ -1741,6 +1741,21 @@ class GenericEnv(VirtualEnv):
 
         return json.loads(output)
 
+    def execute(self, bin: str, *args: str, **kwargs: Any) -> Optional[int]:
+        command = self.get_command_from_bin(bin) + list(args)
+        env = kwargs.pop("env", {k: v for k, v in os.environ.items()})
+
+        if not self._is_windows:
+            return os.execvpe(command[0], command, env=env)
+        else:
+            exe = subprocess.Popen([command[0]] + command[1:], env=env, **kwargs)
+            exe.communicate()
+
+            return exe.returncode
+
+    def _run(self, cmd: List[str], **kwargs: Any) -> Optional[int]:
+        return super(VirtualEnv, self)._run(cmd, **kwargs)
+
     def is_venv(self) -> bool:
         return self._path != self._base