gnu: Add rust-users-0.9.

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

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

gnu/packages/crates-io.scm

@@ -13349,6 +13349,28 @@ (define-public rust-url-1.7
         ("rust-rustc-test" ,rust-rustc-test-0.3)
         ("rust-serde-json" ,rust-serde-json-1.0))))))
 
+(define-public rust-users-0.9
+  (package
+    (name "rust-users")
+    (version "0.9.1")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "users" version))
+        (file-name
+         (string-append name "-" version ".tar.gz"))
+        (sha256
+         (base32
+          "1kxl3y2hcrqqip7jpqn5mz7xlpbwmmpfmaza0xnyrhx0mrkl4by7"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-inputs (("rust-libc" ,rust-libc-0.2))))
+    (home-page "https://github.com/ogham/rust-users")
+    (synopsis "Library for getting information on Unix users and groups")
+    (description "This package provides a library for getting information on
+Unix users and groups.")
+    (license license:expat)))
+
 (define-public rust-utf-8-0.7
   (package
     (name "rust-utf-8")