Merge pull request #258 from neutrinoceros/dep/ditch_setuptools

DEP: refactored out runtime dependency on setuptools

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)
 ==================

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):
         """

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]