gnu: Add julia-categoricalarrays.

* gnu/packages/julia-xyz.scm (julia-categoricalarrays-0.7.1): New variable.

gnu/packages/julia-xyz.scm

@@ -754,3 +754,30 @@ elements are unique")
     (description "This julia package provides a pooled representation of
 arrays for purposes of compression when there are few unique elements.")
     (license license:expat)))
+
+(define-public julia-categoricalarrays
+  (package
+    (name "julia-categoricalarrays")
+    (version "0.7.1")
+    (source
+     (origin
+       (method git-fetch)
+       (uri (git-reference
+             (url "https://github.com/JuliaData/CategoricalArrays.jl")
+             (commit (string-append "v" version))))
+       (file-name "CategoricalArrays")
+       (sha256
+        (base32 "0g12q1gkzm9xc3d6hs8r155p8nnp2hdyghd68vzf9gmqysdn2851"))))
+    (propagated-inputs `(("julia-compat" ,julia-compat)
+                         ("julia-missings" ,julia-missings)
+                         ("julia-dataapi" ,julia-dataapi)
+                         ("julia-reexport" ,julia-reexport)
+                         ("julia-json" ,julia-json)))
+    (build-system julia-build-system)
+    (home-page "https://github.com/JuliaData/CategoricalArrays.jl")
+    (synopsis "Arrays for working with categorical data (both nominal and
+ordinal)")
+    (description "This package provides tools for working with categorical
+variables, both with unordered (nominal variables) and ordered
+categories (ordinal variables), optionally with missing values.")
+    (license license:expat)))