Don't copy regression output files if the dest matches the source

It happens e.g. running 'pgxn check .' in a distribution dir.
pgxn · May 8, 2011 · d707688 · d707688
1 parent 59127e3
commit d707688
Showing 1 changed file with 4 additions and 2 deletions.
diff --git a/pgxnclient/commands/install.py b/pgxnclient/commands/install.py
@@ -166,8 +166,10 @@ def _inun(self, pdir):
             for ext in ('out', 'diffs'):
                 fn = os.path.join(pdir, 'regression.' + ext)
                 if os.path.exists(fn):
-                    logger.info(_('copying regression.%s'), ext)
-                    shutil.copy(fn, './regression.' + ext)
+                    dest = './regression.' + ext
+                    if not os.path.exists(dest) or not os.path.samefile(fn, dest):
+                        logger.info(_('copying regression.%s'), ext)
+                        shutil.copy(fn, dest)
             raise