gnu: Add rust-dtoa-short-0.3.

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

gnu/packages/crates-io.scm

@@ -4239,6 +4239,31 @@ floating-point primitives to an @code{io::Write}.")
          (base32
           "0g96cap6si1g6wi62hsdk2fnj3sf5vd4i97zj6163j8hhnsl3n0d"))))))
 
+(define-public rust-dtoa-short-0.3
+  (package
+    (name "rust-dtoa-short")
+    (version "0.3.2")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "dtoa-short" version))
+        (file-name
+         (string-append name "-" version ".tar.gz"))
+        (sha256
+         (base32
+          "1wkn7ziqffq8hj0a411lgn7674ackzdk734ikp230rmp2f2hn0jr"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-inputs
+       (("rust-dtoa" ,rust-dtoa-0.4))
+       #:cargo-development-inputs
+       (("rust-float-cmp" ,rust-float-cmp-0.3))))
+    (home-page "https://github.com/upsuper/dtoa-short")
+    (synopsis "Serialize float number and truncate to certain precision")
+    (description
+     "Serialize float number and truncate to certain precision in Rust.")
+    (license license:mpl2.0)))
+
 (define-public rust-duct-0.13
   (package
     (name "rust-duct")