gnu: Add rust-rustyline-6.

* gnu/packages/crates-io.scm (rust-rustyline-6): New variable.

gnu/packages/crates-io.scm

@@ -26175,6 +26175,46 @@ sub-processes using a fork-like interface.")
         ("rust-tempfile" ,rust-tempfile-3)
         ("rust-wait-timeout" ,rust-wait-timeout-0.2))))))
 
+(define-public rust-rustyline-6
+  (package
+    (name "rust-rustyline")
+    (version "6.3.0")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "rustyline" version))
+        (file-name
+         (string-append name "-" version ".tar.gz"))
+        (sha256
+         (base32
+          "04w4k0nwsra84h90rvwkr6vmjp3nshjqaj9rakfym8qr09xmw3bg"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-inputs
+       (("rust-cfg-if" ,rust-cfg-if-0.1)
+        ("rust-dirs-next" ,rust-dirs-next-1)
+        ("rust-libc" ,rust-libc-0.2)
+        ("rust-log" ,rust-log-0.4)
+        ("rust-memchr" ,rust-memchr-2)
+        ("rust-nix" ,rust-nix-0.18)
+        ("rust-scopeguard" ,rust-scopeguard-1)
+        ("rust-skim" ,rust-skim-0.7)
+        ("rust-unicode-segmentation" ,rust-unicode-segmentation-1.6)
+        ("rust-unicode-width" ,rust-unicode-width-0.1)
+        ("rust-utf8parse" ,rust-utf8parse-0.2)
+        ("rust-winapi" ,rust-winapi-0.3))
+       #:cargo-development-inputs
+       (("rust-assert-matches" ,rust-assert-matches-1.3)
+        ("rust-doc-comment" ,rust-doc-comment-0.3)
+        ("rust-env-logger" ,rust-env-logger-0.7)
+        ("rust-rustyline-derive" ,rust-rustyline-derive-0.3)
+        ("rust-tempfile" ,rust-tempfile-3))))
+    (home-page "https://github.com/kkawakam/rustyline")
+    (synopsis "Readline implementation in Rust")
+    (description
+     "Rustyline, a readline implementation based on the linenoise package.")
+    (license license:expat)))
+
 (define-public rust-rustyline-derive-0.3
   (package
     (name "rust-rustyline-derive")