gnu: Add rust-async-broadcast-0.5.

* gnu/packages/crates-io.scm (rust-async-broadcast-0.5): New variable.

gnu/packages/crates-io.scm

@@ -4709,6 +4709,33 @@ capacity and random or least recently used (LRU) replacement.")
 Rust.")
     (license (list license:expat license:asl2.0))))
 
+(define-public rust-async-broadcast-0.5
+  (package
+    (name "rust-async-broadcast")
+    (version "0.5.1")
+    (source (origin
+              (method url-fetch)
+              (uri (crate-uri "async-broadcast" version))
+              (file-name (string-append name "-" version ".tar.gz"))
+              (sha256
+               (base32
+                "0avdqbci1qdlfc4glc3wqrb0wi5ffc7bqv2q1wg14syayvdwqj3w"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-inputs
+       (("rust-event-listener" ,rust-event-listener-2)
+        ("rust-futures-core" ,rust-futures-core-0.3))
+       #:cargo-development-inputs
+       (("rust-criterion" ,rust-criterion-0.3)
+        ("rust-doc-comment" ,rust-doc-comment-0.3)
+        ("rust-easy-parallel" ,rust-easy-parallel-3)
+        ("rust-futures-lite" ,rust-futures-lite-1)
+        ("rust-futures-util" ,rust-futures-util-0.3))))
+    (home-page "https://github.com/smol-rs/async-broadcast")
+    (synopsis "Async broadcast channels")
+    (description "This package provides async broadcast channels in Rust.")
+    (license (list license:expat license:asl2.0))))
+
 (define-public rust-async-channel-1
   (package
     (name "rust-async-channel")