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    SubjectRe: Dual-Licensing Linux Kernel with GPL V2 and GPL V3
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    On Jun 14, 2007, Daniel Hazelton <dhazelton@enter.net> wrote:

    > On Thursday 14 June 2007 17:27:27 Alexandre Oliva wrote:
    >> On Jun 14, 2007, Daniel Hazelton <dhazelton@enter.net> wrote:
    >> > <somewhat sarcastic>
    >> > And the companies that produce devices that come with Linux and/or
    >> > other GPL'd software installed and place limits such that only
    >> > people that have purchased that hardware have access to the
    >> > "modified" source running on the device are following the letter,
    >> > and the spirit, of the GPL.
    >>
    >> WAIT, WAIT, THAT'S... :-)
    >>
    >> > Before you start yelling I'm wrong, think about it this way: they
    >> > make the source available to the people that they've given binary
    >> > versions to, and there is nothing stopping one of those people from
    >> > making the source available to the rest of the world.
    >>
    >> The *only* in your sentence betrayed you.
    >>
    >> If they place the limits such that nobody else can access the sources,
    >> they're in violation of the license.

    > Nope. There is *NO* requirement *ANYWHERE* in the GPL, no matter the version,
    > that says you have to *DISTRIBUTE* the source to *ANYONE* except those that
    > you have given a binary to. Go read the licenses.

    I agree. I even said so.

    But the *only* gave me the impression that you were talking about
    magic, or any other sufficiently advanced technology ;-), that would
    enable the recipients to get the source code, but not usefully pass it
    on.

    > That is *EXACTLY* what a number of companies have done - Acer (yes,
    > the laptop company) has done that. They sell laptops running Linux,
    > but unless you have purchased one of them you can't download the
    > sources (or even replacement binaries) for the version of linux they
    > put on their machines. (From Acer, that is)

    That's the sort of stuff that breaks the tit-for-tat premise. GPL
    indeed is not concerned about tit-for-tat. It's concerned about
    respect for the freedoms.

    --
    Alexandre Oliva http://www.lsd.ic.unicamp.br/~oliva/
    FSF Latin America Board Member http://www.fsfla.org/
    Red Hat Compiler Engineer aoliva@{redhat.com, gcc.gnu.org}
    Free Software Evangelist oliva@{lsd.ic.unicamp.br, gnu.org}
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