Re: Recommendation for a CL data structures library

[Hyman Rosen]

On 3/22/2010 8:01 PM, Raffael Cavallaro wrote:
> 2. Mac OS X is BSD Unix. It has existed for half the time that linux
> has, and has more than 5 times the web client share of linux, so yes,
> BSD is on its way to eclipsing linux as a client OS.

It is not correct to say that Mac OS X "is" BSD Unix for normal
definitions of "is".

Look at <http://www.opensource.apple.com/release/mac-os-x-105/>.
The mix of licenses is broad, but many of Apple's own OS components
are licensed under the APPLE PUBLIC SOURCE LICENSE, found at
<http://www.opensource.apple.com/license/apsl/>. It has these key
provisions:
    If You Externally Deploy Your Modifications, You must make
    Source Code of all Your Externally Deployed Modifications
    either available to those to whom You have Externally Deployed
    Your Modifications, or publicly available.  Source Code of Your
    Externally Deployed Modifications must be released under the
    terms set forth in this License, including the license grants
    set forth in Section 3 below, for as long as you Externally
    Deploy the Covered Code or twelve (12) months from the date of
    initial External Deployment, whichever is longer. You should
    preferably distribute the Source Code of Your Externally Deployed
    Modifications electronically (e.g. download from a web site).
    ...
    In consideration of, and as a condition to, the licenses granted
    to You under this License, You hereby grant to any person or
    entity receiving or distributing Covered Code under this License
    a non-exclusive, royalty-free, perpetual, irrevocable license,
    under Your Applicable Patent Rights and other intellectual property
    rights (other than patent) owned or controlled by You, to use,
    reproduce, display, perform, modify, sublicense, distribute and
    Externally Deploy Your Modifications of the same scope and extent
    as Apple's licenses under Sections 2.1 and 2.2 above.