util: avoid using hashlib on Python < 2.5 (issue2278)
The following patch allows the use of python2.4 with a standalone
hashlib rather than assuming that python2.5 is in use when hashlib is
imported successfully.
--- a/mercurial/util.py Mon Aug 16 12:55:42 2010 -0500
+++ b/mercurial/util.py Tue Aug 17 17:38:19 2010 -0500
@@ -28,9 +28,9 @@
# This function will import sha1 from hashlib or sha (whichever is
# available) and overwrite itself with it on the first call.
# Subsequent calls will go directly to the imported function.
- try:
+ if sys.version_info >= (2, 5):
from hashlib import sha1 as _sha1
- except ImportError:
+ else:
from sha import sha as _sha1
global _fastsha1, sha1
_fastsha1 = sha1 = _sha1