gnu: Add r-biocversion.

* gnu/packages/bioconductor.scm (r-biocversion): New variable.

gnu/packages/bioconductor.scm

@@ -879,6 +879,26 @@ package @code{affy}.")
 
 ;;; Packages
 
+(define-public r-biocversion
+  (package
+    (name "r-biocversion")
+    (version "3.10.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (bioconductor-uri "BiocVersion" version))
+       (sha256
+        (base32
+         "0mfqjqfvrwwglldq3g7nbic5hf3nwzv02nbfxnl2cfvf9gznlh5f"))))
+    (properties `((upstream-name . "BiocVersion")))
+    (build-system r-build-system)
+    (home-page "https://bioconductor.org/packages/BiocVersion/")
+    (synopsis "Set the appropriate version of Bioconductor packages")
+    (description
+     "This package provides repository information for the appropriate version
+of Bioconductor.")
+    (license license:artistic2.0)))
+
 (define-public r-biocgenerics
   (package
     (name "r-biocgenerics")