[Rd] Citation if copying R base code

[Gábor Csárdi]

On Thu, Nov 6, 2014 at 9:46 AM, Hadley Wickham <h.wickham at gmail.com> wrote:
>>> And if yes how to do it best? What is the standard procedure here?
>>> Should I include base package authors as contributors in DESCRIPTION???
>>>
>>> Am I allowed to use MIT + file license with that or is it wrong to do so?
>>
>> No, you must use the GPL, since the code you copied is licensed under
>> the GPL.  You can choose to use version 2 or 3 (or both).  You do not
>> have permission to re-license R code under a different license.
>
> I think it's slightly murkier than that - MIT is GPL compatible, so
> you could license the code you've written as MIT, but the package as a
> whole would need to be GPL-2/3.

The package can also be under AGPLv3 AFAIK, just for the sake of completeness.
Maybe something else as well.

Gabor

> Hadley
>
> --
> http://had.co.nz/
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