gnu: Add julia-formatting.

* gnu/packages/julia-xyz.scm (julia-formatting-0.4.1): New variable.

gnu/packages/julia-xyz.scm

@@ -2390,3 +2390,23 @@ support for multiple output devices.")
     (synopsis "Julia interface to Gtk windowing toolkit")
     (description "Julia interface to Gtk+2 and Gtk+3 GUI Library.")
     (license license:expat)))
+
+(define-public julia-formatting
+  (package
+    (name "julia-formatting")
+    (version "0.4.1")
+    (source
+     (origin
+       (method git-fetch)
+       (uri (git-reference
+             (url "https://github.com/JuliaIO/Formatting.jl")
+             (commit (string-append "v" version))))
+       (file-name "Formatting")
+       (sha256
+        (base32 "1argq98ndj9wm5pdf31sshmzqihwk0mx8f3f9cslfs1qzwbc18p2"))))
+    (build-system julia-build-system)
+    (home-page "https://github.com/JuliaIO/Formatting.jl")
+    (synopsis "Julia package to provide Python-like formatting support")
+    (description "This package offers Python-style general formatting and
+c-style numerical formatting (for speed).")
+    (license license:expat)))