gnu: Add rust-num-0.3.

* gnu/packages/crates-io.scm (rust-num-0.3): New variable.
(rust-num-0.2): Inherit from rust-num-0.3.

gnu/packages/crates-io.scm

@@ -15093,8 +15093,38 @@ with all line endings.")
      "Cross-platform file system notification library.")
     (license license:cc0)))
 
+(define-public rust-num-0.3
+  (package
+    (name "rust-num")
+    (version "0.3.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "num" version))
+       (file-name
+        (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32
+         "0jng6s3i51k3227id2z8h348l2da8x3jq4p3az9slkxwj5hifgmb"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-inputs
+       (("rust-num-bigint" ,rust-num-bigint-0.3)
+        ("rust-num-complex" ,rust-num-complex-0.3)
+        ("rust-num-integer" ,rust-num-integer-0.1)
+        ("rust-num-iter" ,rust-num-iter-0.1)
+        ("rust-num-rational" ,rust-num-rational-0.3)
+        ("rust-num-traits" ,rust-num-traits-0.2))))
+    (home-page "https://github.com/rust-num/num")
+    (synopsis "Collection of numeric types and traits for Rust")
+    (description
+     "This package provides a collection of numeric types and traits for Rust,
+including bigint, complex, rational, range iterators, generic integers, and more.")
+    (license (list license:expat license:asl2.0))))
+
 (define-public rust-num-0.2
   (package
+    (inherit rust-num-0.3)
     (name "rust-num")
     (version "0.2.1")
     (source
@@ -15106,7 +15136,6 @@ with all line endings.")
        (sha256
         (base32
          "0dhcvhprvvx1iaaq7sxlgxw5awmj8dibni8vhizi59zyz4q60lxq"))))
-    (build-system cargo-build-system)
     (arguments
      `(#:cargo-inputs
        (("rust-num-bigint" ,rust-num-bigint-0.2)
@@ -15114,13 +15143,7 @@ with all line endings.")
         ("rust-num-integer" ,rust-num-integer-0.1)
         ("rust-num-iter" ,rust-num-iter-0.1)
         ("rust-num-rational" ,rust-num-rational-0.2)
-        ("rust-num-traits" ,rust-num-traits-0.2))))
-    (home-page "https://github.com/rust-num/num")
-    (synopsis "Collection of numeric types and traits for Rust")
-    (description
-     "This package provides a collection of numeric types and traits for Rust,
-including bigint, complex, rational, range iterators, generic integers, and more.")
-    (license (list license:expat license:asl2.0))))
+        ("rust-num-traits" ,rust-num-traits-0.2))))))
 
 (define-public rust-num-0.1
   (package