OTOH this (from python-sig-mac) is a worry if it is correct:

>     s> Apparently the readline library in MacOSX isn't really  
> readline.
>     s> It's a renamed libedit.  Not having encountered this deception
>     s> before, Python's build procedure doesn't know to test the  
> capability
>     s> of readline.  I suggest you just comment out the readline  
> checks in
>     s> setup.py.
>
>     Piet> libedit (editline) is a different library with a similar  
> function
>     Piet> as readline, but not compatible with it. It has a BSD  
> license. It
>     Piet> is often used instead of readline for non-GPL software.
>
> True.  I believe it was written by Rich Salz several years ago.   
> Python used
> to work with it, but eventually started using some readline  
> functionality
> which libedit doesn't provide.  I don't recall what that is.

If you distribute Python sources that link the GNU libreadline then  
all your code will be covered by GPL, because libreadline uses the  
full GPL not LGPL.  That is why Apple and other commercial vendors do  
not include it in their OS.

Bill Northcott
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