Merge pull request #1427 from stephenfin/touch-egg-info-directory

Touch 'egg-info' directory

.gitignore

@@ -10,6 +10,7 @@ setuptools.egg-info
 .coverage
 .eggs
 .tox
+.venv
 *.egg
 *.py[cod]
 *.swp

changelog.d/1427.change.rst

+Set timestamp of ``.egg-info`` directory whenever ``egg_info`` command is run.

setuptools/command/egg_info.py

@@ -281,6 +281,7 @@ class egg_info(InfoCommon, Command):
 
     def run(self):
         self.mkpath(self.egg_info)
+        os.utime(self.egg_info, None)
         installer = self.distribution.fetch_build_egg
         for ep in iter_entry_points('egg_info.writers'):
             ep.require(installer=installer)

setuptools/tests/test_egg_info.py

+import datetime
 import sys
 import ast
 import os
 import glob
 import re
 import stat
+import time
 
 from setuptools.command.egg_info import egg_info, manifest_maker
 from setuptools.dist import Distribution
@@ -146,6 +148,21 @@ class TestEggInfo:
         ]
         assert sorted(actual) == expected
 
+    def test_rebuilt(self, tmpdir_cwd, env):
+        """Ensure timestamps are updated when the command is re-run."""
+        self._create_project()
+
+        self._run_egg_info_command(tmpdir_cwd, env)
+        timestamp_a = os.path.getmtime('foo.egg-info')
+
+        # arbitrary sleep just to handle *really* fast systems
+        time.sleep(.001)
+
+        self._run_egg_info_command(tmpdir_cwd, env)
+        timestamp_b = os.path.getmtime('foo.egg-info')
+
+        assert timestamp_a != timestamp_b
+
     def test_manifest_template_is_read(self, tmpdir_cwd, env):
         self._create_project()
         build_files({