Build: Python 2.6 means pip >= 9, < 10

diff --git a/INSTALL.txt b/INSTALL.txt
index e09b67a83298f84d6258824eb276d16cd306c82b..37b96b63069fd10af98481d327a9e54044832951 100644 (file)
--- a/INSTALL.txt
+++ b/INSTALL.txt
@@ -1,4 +1,4 @@
-m_lib.full requires Python 2.6, 2.7 or 3.4+.
+m_lib.full requires Python 2.6 (that means pip >= 9, < 10), 2.7 or 3.4+.
 
 Installation script setup.py requires setuptools.