gnu: Add rust-quickcheck-0.8.

* gnu/packages/crates-io.scm (rust-quickcheck-0.8): New variable.

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

gnu/packages/crates-io.scm

@@ -2850,6 +2850,37 @@ to write.")
     (license (list license:asl2.0
                    license:expat))))
 
+;; Many circular dependencies.
+;; Dev dependencies are allowed to have them in crates.io.
+(define-public rust-quickcheck-0.8
+  (package
+    (name "rust-quickcheck")
+    (version "0.8.5")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "quickcheck" version))
+       (file-name
+        (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32
+         "0mkl4wnvvjk4m32aq3an4ayfyvnmbxnzcybfm7n3fbsndb1xjdcw"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:skip-build? #t
+       #:cargo-inputs
+       (("rust-env-logger" ,rust-env-logger-0.6)
+        ("rust-log" ,rust-log-0.4)
+        ("rust-rand" ,rust-rand-0.4)
+        ("rust-rand-core" ,rust-rand-core-0.5))))
+    (home-page
+     "https://github.com/BurntSushi/quickcheck")
+    (synopsis
+     "Automatic property based testing with shrinking")
+    (description
+     "Automatic property based testing with shrinking.")
+    (license (list license:expat license:unlicense))))
+
 (define-public rust-quote-1.0
   (package
     (name "rust-quote")