# HG changeset patch
# User Gregory Szorc <gregory.szorc@gmail.com>
# Date 1551560129 28800
# Node ID 89f01ea906ae6471c18caaa08739f88cf19823e6
# Parent  b275dbb60089edef01a61d52adb3f7e75a68480a
attr: don't attempt to .encode() a str on Python 2

Otherwise it coerces automatically.

Differential Revision: https://phab.mercurial-scm.org/D6048

diff -r b275dbb60089 -r 89f01ea906ae mercurial/thirdparty/attr/_make.py
--- a/mercurial/thirdparty/attr/_make.py	Sat Mar 02 12:51:55 2019 -0800
+++ b/mercurial/thirdparty/attr/_make.py	Sat Mar 02 12:55:29 2019 -0800
@@ -555,7 +555,10 @@
 
     # We cache the generated init methods for the same kinds of attributes.
     sha1 = hashlib.sha1()
-    sha1.update(repr(attrs).encode("utf-8"))
+    r = repr(attrs)
+    if not isinstance(r, bytes):
+        r = r.encode('utf-8')
+    sha1.update(r)
     unique_filename = "<attrs generated init {0}>".format(
         sha1.hexdigest()
     )