Document the minimum required Python version.

It turns out that Python 2.2 is the oldest version that PL/Python compiles
with, apparently related to the introduction of iterators.  Might as well
document this.

diff --git a/doc/src/sgml/installation.sgml b/doc/src/sgml/installation.sgml
index c9efc053ea04990f541b02509c257aebf2d0fa0c..0c5e5a4ee8c4ef4083386c8261b97e710838650a 100644 (file)
--- a/doc/src/sgml/installation.sgml
+++ b/doc/src/sgml/installation.sgml
@@ -196,10 +196,7 @@ su - postgres
       To build the <application>PL/Python</> server programming
       language, you need a <productname>Python</productname>
       installation with the header files and the <application>distutils</application> module.
-      The <application>distutils</application> module is included by default with
-      <productname>Python</productname> 1.6 and later; users of
-      earlier versions of <productname>Python</productname> will need
-      to install it.
+      The minimum required version is <productname>Python</productname> 2.2.
      </para>
 
      <para>