gnu: Add elixir-nebulex.

* gnu/packages/elixir-xyz.scm (elixir-nebulex): New variable.

Change-Id: I0e53ec8f424bbab3dcb79a28f9a6ee19da2141b6
Signed-off-by: Ludovic Courtès <ludo@gnu.org>

gnu/packages/elixir-xyz.scm

@@ -672,6 +672,26 @@ explicit contracts for Elixir.")
     (home-page "https://hexdocs.pm/mox/")
     (license license:asl2.0)))
 
+(define-public elixir-nebulex
+  (package
+    (name "elixir-nebulex")
+    (version "2.6.3")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (hexpm-uri "nebulex" version))
+       (sha256
+        (base32 "1maq362prnjxigj3gkd6j9fy54ff4mj97r6aqz7gyqw45yvcpk89"))))
+    (build-system mix-build-system)
+    (arguments
+     ;;Tests depend on elixir-ex2ms which is not packaged yet.
+     (list #:tests? #f))
+    (propagated-inputs (list elixir-decorator erlang-shards erlang-telemetry))
+    (synopsis "In-memory and distributed caching toolkit for Elixir")
+    (description "In-memory and distributed caching toolkit for Elixir.")
+    (home-page "https://hexdocs.pm/nebulex/")
+    (license license:expat)))
+
 (define-public elixir-nimble-options
   (package
     (name "elixir-nimble-options")