gnu: Add rust-sequoia-rfc2822-0.9.

* gnu/packages/crates-io.scm (rust-sequoia-rfc2822-0.9): New variable.

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

gnu/packages/crates-io.scm

@@ -24393,6 +24393,45 @@ (define-public rust-semver-parser-0.7
          (base32
           "18vhypw6zgccnrlm5ps1pwa0khz7ry927iznpr88b87cagr1v2iq"))))))
 
+(define-public rust-sequoia-rfc2822-0.9
+  (package
+    (name "rust-sequoia-rfc2822")
+    (version "0.9.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "sequoia-rfc2822" version))
+       (file-name
+        (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32
+         "1aj34i6862718m162rqfv69fkmvdw063s6ws7hbp42n73gb08p5c"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-inputs
+       (("rust-failure" ,rust-failure-0.1)
+        ("rust-lalrpop" ,rust-lalrpop-0.17)
+        ("rust-lalrpop-util" ,rust-lalrpop-util-0.17))
+       #:cargo-development-inputs
+       (("rust-lazy-static" ,rust-lazy-static-1)
+        ("rust-quickcheck" ,rust-quickcheck-0.8)
+        ("rust-rand" ,rust-rand-0.6))))
+    (home-page "https://sequoia-pgp.org/")
+    (synopsis "RFC 2822 name-addr parser")
+    (description
+     "Currently, this crate only recognizes the RFC 2822 name-addr and
+addr-spec productions, i.e., things of the form:
+
+Name (Comment) <email@@example.org>
+
+and
+
+email@@example.org
+
+Although the above appear simple to parse, RFC 2822's whitespace and comment
+rules are rather complex.  This crate implements the whole grammar." )
+    (license license:gpl3)))
+
 (define-public rust-serde-1
   (package
     (name "rust-serde")