gnu: Add rust-zstd-0.5.

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

gnu/packages/crates-io.scm

@@ -30657,6 +30657,36 @@ implementation that works everywhere, even WASM!")
      "This package provides a library for parsing compiled zoneinfo files.")
     (license license:expat)))
 
+(define-public rust-zstd-0.5
+  (package
+    (name "rust-zstd")
+    (version "0.5.3+zstd.1.4.5")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "zstd" version))
+       (file-name (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32
+         "1n0cgj9i3dk90kn7jcahq5fligqrjfzmnq08hfg71yhyfypjxcq1"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-inputs
+       (("rust-futures" ,rust-futures-0.1)
+        ("rust-tokio-io" ,rust-tokio-io-0.1)
+        ("rust-zstd-safe" ,rust-zstd-safe-2.0.5))
+       #:cargo-development-inputs
+       (("rust-clap" ,rust-clap-2)
+        ("rust-humansize" ,rust-humansize-1)
+        ("rust-partial-io" ,rust-partial-io-0.3)
+        ("rust-quickcheck" ,rust-quickcheck-0.6)
+        ("rust-walkdir" ,rust-walkdir-2))))
+    (home-page "https://github.com/gyscos/zstd-rs")
+    (synopsis "Binding to the zstd compression library")
+    (description "This package provides a binding to the zstd compression
+library.")
+    (license license:expat)))
+
 (define-public rust-zstd-safe-2
   (package
     (name "rust-zstd-safe")