From bc69ac9cd5e0a404c8f12e50b14b2029cbdf5465 Mon Sep 17 00:00:00 2001
From: Stefano Pigozzi <ste.pigozzi@gmail.com>
Date: Wed, 4 Dec 2019 00:14:01 +0100
Subject: [PATCH] I'm not really sure of what I fixed

---
 poetry/version/markers.py | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/poetry/version/markers.py b/poetry/version/markers.py
index 28b0bb74861..6fd9c8f2856 100644
--- a/poetry/version/markers.py
+++ b/poetry/version/markers.py
@@ -614,6 +614,12 @@ def without_extras(self):
 
         return MarkerUnion(*new_markers)
 
+    def is_any(self):  # type: () -> bool
+        for marker in self.markers:
+            if not marker.is_any():
+                return False
+        return True
+
     def __eq__(self, other):
         if not isinstance(other, MarkerUnion):
             return False