gnu: Add rust-num-bigint-dig-0.6.

* gnu/packages/crates-io.scm (rust-num-bigint-dig-0.6): New variable.

gnu/packages/crates-io.scm

@@ -16625,6 +16625,39 @@ (define-public rust-num-bigint-0.1
        #:cargo-development-inputs
        (("rust-rand" ,rust-rand-0.4))))))
 
+(define-public rust-num-bigint-dig-0.6
+  (package
+    (name "rust-num-bigint-dig")
+    (version "0.6.0")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "num-bigint-dig" version))
+        (file-name (string-append name "-" version ".tar.gz"))
+        (sha256
+          (base32 "1aljx3bxfnzq35i9pkbqkj0d0hc1wjc2dd60wccjqylz1wrkrl5k"))))
+    (build-system cargo-build-system)
+    (arguments
+      `(#:skip-build? #t
+        #:cargo-inputs
+        (("rust-autocfg" ,rust-autocfg-0.1)
+         ("rust-byteorder" ,rust-byteorder-1)
+         ("rust-lazy-static" ,rust-lazy-static-1)
+         ("rust-libm" ,rust-libm-0.2)
+         ("rust-num-integer" ,rust-num-integer-0.1)
+         ("rust-num-iter" ,rust-num-iter-0.1)
+         ("rust-num-traits" ,rust-num-traits-0.2)
+         ("rust-rand" ,rust-rand-0.7)
+         ("rust-serde" ,rust-serde-1)
+         ("rust-smallvec" ,rust-smallvec-1)
+         ("rust-zeroize" ,rust-zeroize-1))))
+    (home-page
+      "https://github.com/dignifiedquire/num-bigint")
+    (synopsis "Big integer implementation for Rust")
+    (description "This package provides a big integer implementation
+for Rust")
+    (license (list license:expat license:asl2.0))))
+
 (define-public rust-num-complex-0.3
   (package
     (name "rust-num-complex")