sys.platform on Mac OS X is now "darwin", without any version number appended.

This should probably go into NEWS (who's responsible for that?).

Lib/test/regrtest.py

@@ -619,7 +619,7 @@ _expectations = {
         test_winreg
         test_winsound
         """,
-    'darwin1':
+    'darwin':
         """
         test_al
         test_cd

Lib/test/test_fcntl.py

@@ -16,7 +16,7 @@ except AttributeError:
 else:
     start_len = "qq"
 
-if sys.platform in ('netbsd1', 'Darwin1.2', 'darwin1',
+if sys.platform in ('netbsd1', 'Darwin1.2', 'darwin',
                     'freebsd2', 'freebsd3', 'freebsd4', 'freebsd5',
                     'bsdos2', 'bsdos3', 'bsdos4',
                     'openbsd', 'openbsd2'):

configure.in

@@ -68,6 +68,7 @@ then
 
 	case $MACHDEP in
 	cygwin*) MACHDEP="cygwin";;
+	darwin*) MACHDEP="darwin";;
 	'')	MACHDEP="unknown";;
 	esac
 fi