[sf-lug] Free software talk
rick at linuxmafia.com
Thu Dec 18 18:01:36 PST 2008
Quoting Bill Kendrick (nbs at sonic.net):
> On Thu, Dec 18, 2008 at 11:08:55AM -0800, Rick Moen wrote:
> > Copyleft licences tend to impose that obligation only if you have
> > _distributed_ your modified version to others, or in some cases if
> > you've deployed it for public use even if you haven't distributed
> > it.
> The latter part is GPL 3, right? (The 'TiVo' clause, or whatever.)
I was actually thinking of Affero GPL, not GPLv3. I believe you're
confusing anti-tivoisation and deployment clauses.
Affero GPL ("AGPL") is one of several licences containing clauses that
makes public deployment trigger a copyleft obligation. This is one
possible response to the rise of "Web 2.0" / hosted-app / Software as a
Service (Saas) companies: E.g., I found a host to commercially exploit
someone else's GPL application, and I extensively modify it. GPL
requires a source code shareback only if I _distribute_ my version --
but the SaaS market model deploys software (makes it accessible over
networks) without distribution.
GPLv3's anti-tivoisation clause #3 is something different:
3. Protecting Users' Legal Rights From Anti-Circumvention Law.
No covered work shall be deemed part of an effective technological
measure under any applicable law fulfilling obligations under article 11
of the WIPO copyright treaty [RM: e.g., DMCA] [snip rest]
My recollection is that FSF _considered_ rolling Affero GPL's deployment
language into GPLv3, and I vaguely remember that being in one of the
GPLv3 drafts, but they decided to be conservative and hold off on that.
Affero GPL _was_, however, itself updated to incorporate various GPLv3
improvements, and is listed as a licence to consider.
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