gnu: Add rust-dlv-list-0.3.

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

Change-Id: I2ebd40a207b4c01303baecc6035c07860a641547
Signed-off-by: Efraim Flashner <efraim@flashner.co.il>

gnu/packages/crates-io.scm

@@ -21616,8 +21616,28 @@ (define-public rust-dlib-0.4
     (inputs
      (list rust-libloading-0.6))))
 
+(define-public rust-dlv-list-0.3
+  (package
+    (name "rust-dlv-list")
+    (version "0.3.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "dlv-list" version))
+       (file-name (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32 "0mqj5rdkcjksw3kvjj0nga6rzcpppx0kimjwi527yhifz6kw5206"))))
+    (build-system cargo-build-system)
+    (home-page "https://github.com/sgodwincs/dlv-list-rs")
+    (synopsis "Semi-doubly linked list implemented using a vector")
+    (description
+     "This crate provides semi-doubly linked lists implemented using
+a vector.")
+    (license license:expat)))
+
 (define-public rust-dlv-list-0.2
   (package
+    (inherit rust-dlv-list-0.3)
     (name "rust-dlv-list")
     (version "0.2.3")
     (source
@@ -21627,17 +21647,10 @@ (define-public rust-dlv-list-0.2
        (file-name (string-append name "-" version ".tar.gz"))
        (sha256
         (base32 "06r1nskj3x56p5wqz2bgl6q3rpyymrb0k0zpbvk8c6qcd4mkzpv8"))))
-    (build-system cargo-build-system)
     (arguments
      `(#:skip-build? #t
        #:cargo-inputs
-       (("rust-rand" ,rust-rand-0.8))))
+       (("rust-rand" ,rust-rand-0.8))))))
-    (home-page "https://github.com/sgodwincs/dlv-list-rs")
-    (synopsis "Semi-doubly linked list implemented using a vector")
-    (description
-     "This crate provides semi-doubly linked lists implemented using
-a vector.")
-    (license license:expat)))
 
 (define-public rust-dns-parser-0.8
   (package