gnu: r-dt: Update license field.

* gnu/packages/statistics.scm (r-dt)[license]: Add wtfpl2.

diff --git a/gnu/packages/statistics.scm b/gnu/packages/statistics.scm
index be6eb9f..fd34639 100644 (file)
--- a/gnu/packages/statistics.scm
+++ b/gnu/packages/statistics.scm
@@ -2,7 +2,7 @@
 ;;; Copyright © 2015, 2016, 2017, 2018, 2019, 2020 Ricardo Wurmus <rekado@elephly.net>
 ;;; Copyright © 2015 Vicente Vera Parra <vicentemvp@gmail.com>
 ;;; Copyright © 2016 Andreas Enge <andreas@enge.fr>
-;;; Copyright © 2016, 2017, 2019 Efraim Flashner <efraim@flashner.co.il>
+;;; Copyright © 2016, 2017, 2019, 2020 Efraim Flashner <efraim@flashner.co.il>
 ;;; Copyright © 2016 Pjotr Prins <pjotr.guix@thebird.nl>
 ;;; Copyright © 2016 Roel Janssen <roel@gnu.org>
 ;;; Copyright © 2016 Ben Woodcroft <donttrustben@gmail.com>
@@ -3166,7 +3166,7 @@ Shiny).  The @code{DataTables} library has been included in this R package.")
     (license (list license:gpl3
                    license:expat
                    license:asl2.0
-                   (license:non-copyleft "http://www.wtfpl.net/txt/copying/")))))
+                   license:wtfpl2))))
 
 (define-public r-base64enc
   (package