[SciPy-user] python+maxima+latex for symbolic stuff

Ryan Krauss ryanlists at gmail.com
Thu Nov 17 19:15:41 CST 2005

Actually, what I am doing is exacly covered by "command-line arguments
are communication mechanisms normally used between two separate

So, I will attach a BSD license soon.


On 11/17/05, Ryan Krauss <ryanlists at gmail.com> wrote:
> I found this under the FAQ at gnu.org and it would appear that Stephan
> is right (but the gnu folks don't want to say that for sure):
> ============================
> What is the difference between "mere aggregation" and "combining two
> modules into one program"?
>     Mere aggregation of two programs means putting them side by side
> on the same CD-ROM or hard disk. We use this term in the case where
> they are separate programs, not parts of a single program. In this
> case, if one of the programs is covered by the GPL, it has no effect
> on the other program.
>     Combining two modules means connecting them together so that they
> form a single larger program. If either part is covered by the GPL,
> the whole combination must also be released under the GPL--if you
> can't, or won't, do that, you may not combine them.
>     What constitutes combining two parts into one program? This is a
> legal question, which ultimately judges will decide. We believe that a
> proper criterion depends both on the mechanism of communication (exec,
> pipes, rpc, function calls within a shared address space, etc.) and
> the semantics of the communication (what kinds of information are
> interchanged).
>     If the modules are included in the same executable file, they are
> definitely combined in one program. If modules are designed to run
> linked together in a shared address space, that almost surely means
> combining them into one program.
>     By contrast, pipes, sockets and command-line arguments are
> communication mechanisms normally used between two separate programs.
> So when they are used for communication, the modules normally are
> separate programs. But if the semantics of the communication are
> intimate enough, exchanging complex internal data structures, that too
> could be a basis to consider the two parts as combined into a larger
> program.
> =========================
> I think what I have done is a "mere aggregation" so that it could be
> distributed on the same CD rom as Maxima and not need to be GPL - i.e.
> that Maxima's GPL license would not affect anything else being
> distributed with it.  My input/output sharing is less sophisticated
> that pipes.
> Ryan
> On 11/17/05, Stefan van der Walt <stefan at sun.ac.za> wrote:
> > On Thu, Nov 17, 2005 at 04:13:28PM -0500, Ryan Krauss wrote:
> > > Sorry, yes I meant to use a BSD license.  I don't know completely how
> > > this will work though because Maxima is GPL.  I don't link to Maxima
> > > in anyway, I just call it from the command line.  Does that pose a
> > > problem for comercial use?  Can you bundle GPL software with your own
> > > proprietary stuff if you don't link to it?
> >
> > If you don't link to GPL'd code, that license doesn't pose a problem.
> > You are allowed to bundle GPL software with commercial packages, as
> > long as you distribute the source as well.
> >
> > In fact, you are allowed to sell GPL software -- but finding buyers
> > might prove difficult :)
> >
> > Stéfan
> >
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> >

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