For Approval: Transitive Grace Period Public Licence, v1.0

Bruce Perens bruce at
Thu Feb 19 18:11:23 UTC 2009

Chris Zumbrunn wrote:
> No, because for the first twelve month the license behaves like a 
> permissive open source license.
Actually, it doesn't. A permissive or "gift" Open Source license allows 
software under /other/ licenses, generally a proprietary license or "All 
Rights Reserved", to be combined with the Open Source component.

In the case of software under the TGPPL, the restricted component is 
under the TGPPL, rather than another license. But that component is not 
Open Source until some time expires.

Consider the situation of someone who acquires that software and 
redistributes it as if it were Open Source. That person would be subject 
to criminal prosecution under trade secrets law and civil suit for 
copyright infringement. Even though the TGPPL applied to the software in 

Thus, it is difficult for me to see how the TGPPL could be OSD compliant.



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