gnu: r-rversions: Move to (gnu packages cran).

* gnu/packages/statistics.scm (r-rversions): Move from here...
* gnu/packages/cran.scm (r-rversions): ...to here.

Change-Id: I84f1264333cd5750af9c68963b579e988df2458e

gnu/packages/cran.scm

@@ -7640,6 +7640,27 @@ through a Redis database.  Key features include task queues, local caching,
 and sophisticated error handling.")
     (license license:expat)))
 
+(define-public r-rversions
+  (package
+    (name "r-rversions")
+    (version "3.0.0")
+    (source (origin
+              (method url-fetch)
+              (uri (cran-uri "rversions" version))
+              (sha256
+               (base32
+                "1q9k169vd31pvigf8q5lwc0zvacbycv7nl584kdh2mzbbyfjb06s"))))
+    (build-system r-build-system)
+    (propagated-inputs (list r-curl))
+    (native-inputs (list r-testthat r-webfakes r-withr))
+    (home-page "https://github.com/metacran/rversions")
+    (synopsis "Query R versions, including 'r-release' and 'r-oldrel'")
+    (description
+     "This package provides functions to query the main R repository to find
+the versions that @code{r-release} and @code{r-oldrel} refer to, and also all
+previous R versions and their release dates.")
+    (license license:expat)))
+
 (define-public r-prettydoc
   (package
     (name "r-prettydoc")

gnu/packages/statistics.scm

@@ -1660,27 +1660,6 @@ Features:
 @end itemize")
     (license license:asl2.0)))
 
-(define-public r-rversions
-  (package
-    (name "r-rversions")
-    (version "3.0.0")
-    (source (origin
-              (method url-fetch)
-              (uri (cran-uri "rversions" version))
-              (sha256
-               (base32
-                "1q9k169vd31pvigf8q5lwc0zvacbycv7nl584kdh2mzbbyfjb06s"))))
-    (build-system r-build-system)
-    (propagated-inputs (list r-curl))
-    (native-inputs (list r-testthat r-webfakes r-withr))
-    (home-page "https://github.com/metacran/rversions")
-    (synopsis "Query R versions, including 'r-release' and 'r-oldrel'")
-    (description
-     "This package provides functions to query the main R repository to find
-the versions that @code{r-release} and @code{r-oldrel} refer to, and also all
-previous R versions and their release dates.")
-    (license license:expat)))
-
 (define-public r-segmented
   (package
     (name "r-segmented")