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

[Ricardo Wurmus <ricardo.wurmus@mdc-berlin.de>]

Hi Vicente,

> From 36f94f07cba5edea4897ac36b92a73bfc6a3258b Mon Sep 17 00:00:00 2001
> From: Vicente Vera Parra <vicentemvp@gmail.com>
> Date: Sun, 13 Sep 2015 13:20:29 -0300
> Subject: [PATCH 11/19] gnu: Add r-knitr.

> * gnu/packages/statistics.scm (r-knitr): New variable.

[...]

> +    (synopsis "General-Purpose Package for Dynamic Report Generation in R")
> +    (description
> +     "Provides a general-purpose tool for dynamic report generation in
> +R using Literate Programming techniques.")

As before, please provide a better description (at least by replacing
“Provides” in the first sentence with “This package provides”); and use
lower-case in the synopsis.

> +    (license license:gpl3+)))

I don’t think this is correct.  The package actually doesn’t declare the
version of the GPL.  There are no license headers I could find and all
it says is

    “This package is free and open source software, licensed under GPL.”

Furthermore, as noted before, there might be a license conflict when
combining “r-knitr” with “r-markdown”, because the latter is released
under “GPLv2 only”.

I just asked the author about what version of the GPL was intended
here[1].

~~ Ricardo

[1]: https://github.com/yihui/knitr/issues/566#issuecomment-140042571