From dd104ac09571529762ad878805f61385548c9125 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Cl=C3=A9ment=20Robert?= <cr52@protonmail.com>
Date: Fri, 19 Jul 2024 13:35:43 +0200
Subject: [PATCH] DEP: refactored out runtime dependency on setuptools

---
 CHANGES.rst                 |  1 +
 pytest_doctestplus/utils.py | 12 +++++++++---
 setup.cfg                   |  2 +-
 3 files changed, 11 insertions(+), 4 deletions(-)

diff --git a/CHANGES.rst b/CHANGES.rst
index 1c08c17..5c64b01 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -2,6 +2,7 @@
 ==================
 
 - Fixing output update for multiline code. [#253]
+- Dropped ``setuptools`` as a runtime dependency. [#258]
 
 1.2.1 (2024-03-09)
 ==================
diff --git a/pytest_doctestplus/utils.py b/pytest_doctestplus/utils.py
index baa08cc..8a6df5c 100644
--- a/pytest_doctestplus/utils.py
+++ b/pytest_doctestplus/utils.py
@@ -1,7 +1,7 @@
 import importlib.util
 
-import pkg_resources
-
+from importlib.metadata import distribution
+from packaging.requirements import Requirement
 
 class ModuleChecker:
 
@@ -15,9 +15,15 @@ def find_module(self, module):
     def find_distribution(self, dist):
         """Search for distribution with specified version (eg 'numpy>=1.15')."""
         try:
-            return pkg_resources.require(dist)
+            reqs = Requirement(dist)
+            dist_meta = distribution(reqs.name)
         except Exception:
             return None
+        else:
+            if reqs.specifier.contains(dist_meta.version, prereleases=True):
+                return dist_meta
+            else:
+                return None
 
     def check(self, module):
         """
diff --git a/setup.cfg b/setup.cfg
index caefa77..df14586 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -33,13 +33,13 @@ setup_requires =
     setuptools_scm
 install_requires =
     pytest>=4.6
-    setuptools>=30.3.0
     packaging>=17.0
 
 [options.extras_require]
 test =
     numpy
     pytest-remotedata>=0.3.2
+    setuptools>=30.3.0
     sphinx
 
 [options.entry_points]