Re: [PATCH 11/19] gnu: Add r-knitr.

[Ricardo Wurmus]

Hi Vicente,

> I'm not sure if it's correct, but I changed the license from gpl3+ to
> gpl2+ to keep it consistent with the r-markdown package
> (https://www.gnu.org/licenses/gpl-faq.html#v2v3Compatibility). Thanks
> for figuring that out.

actually, the author responded and said that “GPL” in the package’s
DESCRIPTION file just means “any GPL version”.  Here’s the comment:

   https://github.com/yihui/knitr/issues/566#issuecomment-140095735

The licensing guidelines for R packages state that

   “Abbreviations GPL and LGPL are ambiguous and usually taken to mean
   any version of the license”

In this case “gpl2+” is probably correct, but you may want to add a
comment above the ‘(license ...)’ expression to state that any GPL
version may be picked by users here.

What do others think?

~~ Ricardo