make patch version pinning operational with older Python

1 files changed, 9 insertions, 2 deletions

diff --git a/setup.py b/setup.py
index de8cd26..28bedac 100644
--- a/setup.py
+++ b/setup.py
@@ -67,10 +67,14 @@ try:
     from setuptools import setup, Command
 
     params = {
-        'install_requires': ['pyasn1~=0.3.4'],
         'zip_safe': True
     }
 
+    if sys.version_info[:2] < (2, 6):
+        params['install_requires'] = ['pyasn1>=0.3.4,<0.4.0']
+    else:
+        params['install_requires'] = ['pyasn1~=0.3.4']
+
 except ImportError:
     for arg in sys.argv:
         if 'egg' in arg:
@@ -81,7 +85,10 @@ except ImportError:
     params = {}
 
     if sys.version_info[:2] > (2, 4):
-        params['requires'] = ['pyasn1(~=0.3.4)']
+        if sys.version_info[:2] < (2, 6):
+            params['requires'] = ['pyasn1>=0.3.4,<0.4.0']
+        else:
+            params['requires'] = ['pyasn1(~=0.3.4)']
 
 params.update(
     {'name': 'pyasn1-modules',