gnu: Add rust-twox-hash-1.

* gnu/packages/crates-io.scm (rust-twox-hash-1): New variable.

gnu/packages/crates-io.scm

@@ -23983,6 +23983,36 @@ based on Rustls and Ring.")
        (("rust-sema" ,rust-sema-0.1)
         ("rust-winit" ,rust-winit-0.19)))))) ; 0.17?
 
+(define-public rust-twox-hash-1
+  (package
+    (name "rust-twox-hash")
+    (version "1.6.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "twox-hash" version))
+       (file-name
+        (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32
+         "0ndb4pil758kn0av83jjgq8kkfkwc5lhi5ii7fk5yw96h1wapy04"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-inputs
+       (("rust-cfg-if" ,rust-cfg-if-0.1)
+        ("rust-digest" ,rust-digest-0.8)
+        ("rust-digest" ,rust-digest-0.9)
+        ("rust-rand" ,rust-rand-0.7)
+        ("rust-serde" ,rust-serde-1)
+        ("rust-static-assertions" ,rust-static-assertions-1))
+       #:cargo-development-inputs
+       (("rust-serde-json" ,rust-serde-json-1))))
+    (home-page "https://github.com/shepmaster/twox-hash")
+    (synopsis "Rust implementation of the XXHash and XXH3 algorithms")
+    (description "This package provides a Rust implementation of the XXHash
+and XXH3 algorithms.")
+    (license license:expat)))
+
 (define-public rust-meval-0.2
   (package
     (name "rust-meval")