license viability (was "Closure Compiler")
Craig Latta
craig.latta at netjam.org
Tue Mar 25 21:46:00 UTC 2003
Hi Cees--
> SqueakL is of course just as much a farce as anything else. Ever
> since I saw exactly the same code comments deep in the bellows of VW
> and Squeak I wondered whether a) Apple has duly documented what code
> licensed from <insert ancient name of Smalltalk-80 company here> has
> flown into Squeak, how comes they could 'open source' that stuff...
No problem there, it seems. Quick summary:
- Xerox licenses ST80 v1 to Apple and others, Apple can do what it likes
with what it derives from v1.
- Xerox creates v2, derived from v1, uses more restrictive v2 license
for v2.
- Xerox transfers rights to v2 to ParcPlace (for the legendary $1),
retaining a non-exclusive license to use v2 itself.
- ParcPlace creates VisualWorks, derived from v2.
- Apple creates Squeak, derived from v1.
So it just happens that VisualWorks and Squeak are both derived from
v1, but there doesn't seem to be a "code taint" problem.
> ...and b) who is going to protect you/us if Cincom decides that
> 'their' code is in Squeak and it shouldn't be there.
That's always a risk no matter what, I guess.
-C
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