gnu: Add julia-dataframes.

* gnu/packages/julia-xyz.scm (julia-dataframes-0.19.4): New variable.

gnu/packages/julia-xyz.scm

@@ -781,3 +781,35 @@ ordinal)")
 variables, both with unordered (nominal variables) and ordered
 categories (ordinal variables), optionally with missing values.")
     (license license:expat)))
+
+(define-public julia-dataframes
+  (package
+    (name "julia-dataframes")
+    (version "0.19.4")
+    (source
+     (origin
+       (method git-fetch)
+       (uri (git-reference
+             (url "https://github.com/JuliaData/DataFrames.jl")
+             (commit (string-append "v" version))))
+       (file-name "DataFrames")
+       (sha256
+        (base32 "0400bhrxyz4z9xzqypayzra9xdk84frv76rz7s8p834i1v7ldmkk"))))
+    (propagated-inputs
+     `(("julia-tables" ,julia-tables)
+       ("julia-iteratorinterfaceextensions" ,julia-iteratorinterfaceextensions)
+       ("julia-tabletraits" ,julia-tabletraits)
+       ("julia-missings" ,julia-missings)
+       ("julia-categoricalarrays" ,julia-categoricalarrays)
+       ("julia-invertedindices" ,julia-invertedindices)
+       ("julia-compat" ,julia-compat)
+       ("julia-pooledarrays" ,julia-pooledarrays)
+       ("julia-sortingalgorithms" ,julia-sortingalgorithms)
+       ("julia-reexport" ,julia-reexport)
+       ("julia-dataapi" ,julia-dataapi)
+       ("julia-parsers" ,julia-parsers)))
+    (build-system julia-build-system)
+    (home-page "https://github.com/JuliaData/DataFrames.jl")
+    (synopsis "In-memory tabular data in Julia")
+    (description "Tools for working with tabular data in Julia.")
+    (license license:expat)))