gnu: Add rust-hostname.

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

gnu/packages/crates-io.scm

@@ -519,6 +519,29 @@ hexadecimal representation.")
     (license (list license:asl2.0
                    license:expat))))
 
+(define-public rust-hostname
+  (package
+    (name "rust-hostname")
+    (version "0.1.5")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "hostname" version))
+        (file-name (string-append name "-" version ".tar.gz"))
+        (sha256
+         (base32
+          "0kprf862qaa7lwdms6aw7f3275h0j2rwhs9nz5784pm8hdmb9ki1"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-inputs
+       (("rust-libc" ,rust-libc)
+        ("rust-winutil" ,rust-winutil))))
+    (home-page "https://github.com/fengcen/hostname")
+    (synopsis "Get hostname for Rust")
+    (description
+     "Get hostname for Rust.")
+    (license license:expat)))
+
 (define-public rust-iovec
   (package
     (name "rust-iovec")