Description

src="https://faif.us/static/img/cast/audio_mp3_button.png"/>

Bradley and href="http://www.softwarefreedom.org/about/team/#karen">Karen
discuss types of copyleft generally and introduce the basics of license
compatibility and -or-later clauses.

Show Notes:

Segment 0 (00:38)

• This show discusses href="http://en.wikipedia.org/wiki/Copyleft">copyleft and basic
  issues of href="http://en.wikipedia.org/wiki/License_compatibility">license
  compatibility (04:09)
• Karen mentioned an episode of the
  old Software Freedom Law Show, href="http://www.softwarefreedom.org/podcast/2009/mar/03/0x08/">Episode
  0x08, where Bradley and Karen discussed selecting a FLOSS license
  and what the various options are. (04:45)
• license compatibility
  06:28

• Bradley incorrectly said that the original Emacs license didn't
  have the word General in it. However, the other explanations
  appear to be correct. href="http://free-soft.org/gpl_history/">There's a useful history page
  that someone wrote about the history of GPL. It appears the
  non-general GNU copylefts existed from 1984-1988. (06:57)
• Karen noted that the href="http://en.wikipedia.org/wiki/GNU_Lesser_General_Public_License">Library
  GPL was renamed to the Lesser GPL which happened
  in 1999. (09:30)
• Bradley mentioned that when he and RMS worked on the href="http://www.gnu.org/software/classpath/license.html">GNU Classpath
  Exception, Bradley suggested it be called the Least
  GPL. (10:38)
• GPL doesn't have a href="http://en.wikipedia.org/wiki/Choice_of_law_clause">choice of
  law clause. If another copyleft does, it surely is incompatible
  with the GPL. (14:17)
• AGPLv3
  § 13 and href="http://www.gnu.org/licenses/gpl.html#section13">GPLv3 §
  13 explicitly make themselves compatibility with each other, which
  Bradley calls compatibility by fiat. (15:40)
• Karen mentioned that the href="http://www.mozilla.org/MPL/MPL-1.1.html#section-13">Mozilla
  Public License § 13 has a section about multiple licensed code
  (16:50).
• Bradley mentioned that Mozilla Firefox uses a href="http://www.mozilla.org/MPL/">combinatorial license:
  (GPL|LGPL|MPL), which is a disjunctive tri-license. (19:00).
• Bradley mentioned that the old Software Freedom Law
  Show href="http://www.softwarefreedom.org/podcast/2009/sep/29/0x17/">Episode
  0x17 discussed compatibility of permissively licensed software and
  copylefted software. (20:22)
• Apache
  Software License 2.0 was likely the first FLOSS license to have an
  explicit patent licensing provision (23:40)
• Bradley and Karen discussed the fact that -only vs. -or-later are
  options with the GPL, while they are not with other copylefts, such as
  CC-By-SA. (30:11)

Send feedback and comments on the cast
to <oggcast@faif.us>.
You can keep in touch with Free as in Freedom on our IRC channel, #faif on irc.freenode.net, and
by following Conservancy on
identi.ca and and Twitter.

Free as in Freedom is produced by Dan Lynch
of danlynch.org.
Theme
music written and performed
by Mike Tarantino
with Charlie Paxson on drums.

href="https://creativecommons.org/licenses/by-sa/4.0/"> src="http://i.creativecommons.org/l/by-sa/4.0/88x31.png" hspace=10 />
The content
of this
audcast, and the accompanying show notes and music are licensed
under the href="https://creativecommons.org/licenses/by-sa/4.0/">Creative
Commons Attribution-Share-Alike 4.0 license (CC BY-SA 4.0).