gnu: Add rust-yaml-rust-0.4.

* gnu/packages/crates-io.scm (rust-yaml-rust-0.4): New variable.

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

gnu/packages/crates-io.scm

@@ -8965,3 +8965,29 @@ (define-public rust-xdg-2.2
     (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
+
+(define-public rust-yaml-rust-0.4
+  (package
+    (name "rust-yaml-rust")
+    (version "0.4.3")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "yaml-rust" version))
+       (file-name
+        (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32
+         "0ka3qhqc5lvk3hz14wmsj32jhmh44blcbfrx5hfxli2gg38kv4k5"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:skip-build? #t
+       #:cargo-inputs
+       (("rust-linked-hash-map" ,rust-linked-hash-map-0.5))
+       #:cargo-development-inputs
+       (("rust-quickcheck" ,rust-quickcheck-0.8))))
+    (home-page "http://chyh1990.github.io/yaml-rust/")
+    (synopsis "The missing YAML 1.2 parser for rust")
+    (description
+     "The missing YAML 1.2 parser for rust.")
+    (license (list license:asl2.0 license:expat))))