gnu: Add julia-pooledarrays.

* gnu/packages/julia-xyz.scm (julia-pooledarrays-0.5.2): New variable.

gnu/packages/julia-xyz.scm

@@ -733,3 +733,24 @@ module from your module, until this functionality is built into Julia.")
 InvertedIndex, or Not for short.  It can wrap any supported index type and may
 be used as an index into any AbstractArray subtype, including OffsetArrays.")
     (license license:expat)))
+
+(define-public julia-pooledarrays
+  (package
+    (name "julia-pooledarrays")
+    (version "0.5.2")
+    (source
+     (origin
+       (method git-fetch)
+       (uri (git-reference
+             (url "https://github.com/JuliaData/PooledArrays.jl")
+             (commit (string-append "v" version))))
+       (file-name "PooledArrays")
+       (sha256
+        (base32 "0sdn965bb93api43dj8dsd32lp3yyh53mp22xr0vfj115x3ym2wj"))))
+    (build-system julia-build-system)
+    (home-page "https://github.com/JuliaData/PooledArrays.jl")
+    (synopsis "Pooled representation of arrays for compression when few
+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)))