gnu: Add rust-handlegraph-0.3.

* gnu/packages/crates-io.scm (rust-handlegraph-0.3): New variable.

gnu/packages/crates-io.scm

@@ -11544,6 +11544,30 @@ (define-public rust-handlebars-2.0
 the template engine that renders the official Rust website")
     (license license:expat)))
 
+(define-public rust-handlegraph-0.3
+  (package
+    (name "rust-handlegraph")
+    (version "0.3.0")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "handlegraph" version))
+        (file-name
+         (string-append name "-" version ".tar.gz"))
+        (sha256
+         (base32
+          "1sj100w4lpj7798pws85qrfrzsily5hhzh6j118rwf56sgic1yml"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-inputs
+       (("rust-bstr" ,rust-bstr-0.2)
+        ("rust-gfa" ,rust-gfa-0.6))))
+    (home-page "https://github.com/chfi/rs-handlegraph")
+    (synopsis "Library for use in variation graphs")
+    (description
+     "This package provides a Rust implementation of VG handle graph.")
+    (license license:expat)))
+
 (define-public rust-hash32-0.1
   (package
     (name "rust-hash32")