From 5c9a5a62cbb969c03125a0f6fba7fd0e9f863c43 Mon Sep 17 00:00:00 2001
From: Damian Shaw <damian.peter.shaw@gmail.com>
Date: Sun, 23 Feb 2025 21:59:50 -0500
Subject: [PATCH] Lazily prepare distribution for candidate

---
 src/pip/_internal/resolution/resolvelib/candidates.py | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/src/pip/_internal/resolution/resolvelib/candidates.py b/src/pip/_internal/resolution/resolvelib/candidates.py
index 1d21ede72cc..722e31c1bc0 100644
--- a/src/pip/_internal/resolution/resolvelib/candidates.py
+++ b/src/pip/_internal/resolution/resolvelib/candidates.py
@@ -138,7 +138,6 @@ class exposes appropriate information to the resolver.
         found remote link (e.g. from pypi.org).
     """
 
-    dist: BaseDistribution
     is_installed = False
 
     def __init__(
@@ -156,9 +155,17 @@ def __init__(
         self._ireq = ireq
         self._name = name
         self._version = version
-        self.dist = self._prepare()
+        self._dist: Optional[BaseDistribution] = None
         self._hash: Optional[int] = None
 
+    @property
+    def dist(self) -> BaseDistribution:
+        if self._dist is not None:
+            return self._dist
+
+        self._dist = self._prepare()
+        return self._dist
+
     def __str__(self) -> str:
         return f"{self.name} {self.version}"