[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: how much is too much?

From: Chad Whitacre
Subject: Re: how much is too much?
Date: Wed, 25 May 2005 13:26:39 -0400
User-agent: Mozilla Thunderbird 0.8 (Windows/20040913)

The bottom line seems to be that the street between copyleft and non-copyleft free software only runs one way: copyleft can incorporate non-copyleft and retain its identity, but not the other way around. I.e., the GPL's hegemony extends to non-copyleft free software as much as to proprietary software. Accurate?

Actually I suppose we would say that there is no street between copyleft and proprietary, so the relationship is not entirely parallel. Ok, how about a little ascii art. :-)

  copyleft <---- non-copyleft ----> proprietary
    |  ^             |  ^
    |  |             |  |
    `--'             `--'

  - copyleft can incorporate copyleft and non-copyleft software
  - non-copyleft can incorporate non-copyleft software
  - proprietary can incorporate non-copyleft software

So copyleft gets two-thirds of the pie, while the others only get one-third, so to speak. And of course, this refers to incorporation of code rather than external usage via pipes, etc.


reply via email to

[Prev in Thread] Current Thread [Next in Thread]