From b9e096fd362be37ce53182117ba421232367b6b9 Mon Sep 17 00:00:00 2001
From: Joan Massich <mailsik@gmail.com>
Date: Sun, 22 Feb 2015 15:40:36 +0100
Subject: [PATCH] setup.py: do not install c extensions on pypy

These extensions are slower on pypy because pypy has a JIT compiler.
And also, they often do not compile (it depends on the pypy configuration).
---
 setup.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/setup.py b/setup.py
index f93d8be5b3..a6ce71e927 100644
--- a/setup.py
+++ b/setup.py
@@ -63,6 +63,8 @@ else:
         raise SystemExit(
             "Couldn't import standard bz2 (incomplete Python install).")
 
+ispypy = "PyPy" in sys.version
+
 import os, stat, subprocess, time
 import re
 import shutil
@@ -276,7 +278,7 @@ class hgbuildmo(build):
 
 
 class hgdist(Distribution):
-    pure = 0
+    pure = ispypy
 
     global_options = Distribution.global_options + \
                      [('pure', None, "use pure (slow) Python "