From 9ca2240530070d3719a42abfbe8c5f4677633a04 Mon Sep 17 00:00:00 2001
From: Tzu-ping Chung <uranusjr@gmail.com>
Date: Thu, 2 Apr 2020 21:42:26 +0800
Subject: [PATCH] More clarification on the name

---
 src/pip/_internal/resolution/resolvelib/candidates.py   | 3 ++-
 src/pip/_internal/resolution/resolvelib/requirements.py | 5 ++++-
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/src/pip/_internal/resolution/resolvelib/candidates.py b/src/pip/_internal/resolution/resolvelib/candidates.py
index 1f3cca9c5..31453dbd4 100644
--- a/src/pip/_internal/resolution/resolvelib/candidates.py
+++ b/src/pip/_internal/resolution/resolvelib/candidates.py
@@ -218,7 +218,8 @@ class RequiresPythonCandidate(Candidate):
     @property
     def name(self):
         # type: () -> str
-        return "<Python>"  # Avoid conflicting with the PyPI package "Python".
+        # Avoid conflicting with the PyPI package "Python".
+        return "<Python fom Requires-Python>"
 
     @property
     def version(self):
diff --git a/src/pip/_internal/resolution/resolvelib/requirements.py b/src/pip/_internal/resolution/resolvelib/requirements.py
index cdfa93c2c..b8711534d 100644
--- a/src/pip/_internal/resolution/resolvelib/requirements.py
+++ b/src/pip/_internal/resolution/resolvelib/requirements.py
@@ -35,10 +35,13 @@ class ExplicitRequirement(Requirement):
 
 class NoMatchRequirement(Requirement):
     """A requirement that never matches anything.
+
+    Note: Similar to ExplicitRequirement, the caller should handle name
+    canonicalisation; this class does not perform it.
     """
     def __init__(self, name):
         # type: (str) -> None
-        self._name = canonicalize_name(name)
+        self._name = name
 
     @property
     def name(self):
-- 
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