gnu: Add rust-c2-chacha-0.2.

* gnu/packages/crates-io.scm (rust-c2-chacha-0.2): New variable.

Signed-off-by: Efraim Flashner <efraim@flashner.co.il>

gnu/packages/crates-io.scm

@@ -780,6 +780,35 @@ little-endian.")
      "Types and traits for working with bytes.")
     (license license:expat)))
 
+(define-public rust-c2-chacha-0.2
+  (package
+    (name "rust-c2-chacha")
+    (version "0.2.2")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "c2-chacha" version))
+       (file-name
+        (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32
+         "00a11qdc8mg3z0k613rhprkc9p6xz0y7b1681x32ixg0hr3x0r3x"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:skip-build? #t
+       #:cargo-inputs
+       (("rust-byteorder" ,rust-byteorder-1.3)
+        ("rust-lazy-static" ,rust-lazy-static-1.3)
+        ("rust-ppv-lite86" ,rust-ppv-lite86-0.2)
+        ("rust-stream-cipher" ,rust-stream-cipher-0.3))
+       #:cargo-development-inputs
+       (("rust-hex-literal" ,rust-hex-literal-0.2))))
+    (home-page "https://github.com/cryptocorrosion/cryptocorrosion")
+    (synopsis "The ChaCha family of stream ciphers")
+    (description
+     "The ChaCha family of stream ciphers.")
+    (license (list license:asl2.0 license:expat))))
+
 (define-public rust-cargon-0.0
   (package
     (name "rust-cargon")