Re: Announce: GPL Framework centered on Postgres

Florian Weimer wrote:

* Kenneth Downs:
 

If you seek to provide a closed source app that is built upon
Andromeda, you are required to provide the source code to Andromeda
itself.  However, your app is not a derivative work in the strict
sense because your code is not mixed in with mine in any sense.  You
never modify a file, and your files and mine are actually in separate
directories.   

Many proprietary software vendors think that if you program to an
interface which has a sole implementation, your code becomes a derived
work of that implementation.  If you sell different licenses for
run-time and development environments, such an attitude towards
copyright law seems inevitable. 

I am not understanding you.  By sole implementation do you mean sole license, or single codebase, or cant-run-without-the-library?

The last sentence I don't understand at all, can you elaborate?