gnu: Add r-distillery.

* gnu/packages/cran.scm (r-distillery): New variable.

gnu/packages/cran.scm

@@ -617,3 +617,24 @@ L-moments from the data.  It also contains functions to estimate the
 parameters of the normal polynomial quantile mixture and the Cauchy polynomial
 quantile mixture from L-moments and trimmed L-moments.")
     (license license:gpl2)))
+
+(define-public r-distillery
+  (package
+    (name "r-distillery")
+    (version "1.0-2")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (cran-uri "distillery" version))
+       (sha256
+        (base32
+         "12m4cacvc18fd3aayc8iih5q6bwsmvf29b55fwp7vs8wp1h8nd8c"))))
+    (build-system r-build-system)
+    (home-page "http://www.ral.ucar.edu/staff/ericg")
+    (synopsis "Functions for confidence intervals and object information")
+    (description
+     "This package provides some very simple method functions for confidence
+interval calculation and to distill pertinent information from a potentially
+complex object; primarily used in common with the packages extRemes and
+SpatialVx.")
+    (license license:gpl2+)))