gnu: Add rust-empfindung-0.2.

* gnu/packages/crates-io.scm (rust-empfindung-0.2): New variable.

gnu/packages/crates-io.scm

@@ -19489,6 +19489,30 @@ inclusion of Windows resources in the most resilient fashion imaginable.")
 embedded systems.")
     (license (list license:expat license:asl2.0))))
 
+(define-public rust-empfindung-0.2
+  (package
+    (name "rust-empfindung")
+    (version "0.2.4")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "empfindung" version))
+       (file-name (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32 "1h68h3sxsa79a47jag3yim5jm63ffz72ifj46xkn12j2s5nss85l"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:skip-build? #t
+       #:cargo-inputs
+       (("rust-lab" ,rust-lab-0.11)
+        ("rust-rgb" ,rust-rgb-0.8))))
+    (home-page "https://github.com/mina86/empfindung")
+    (synopsis "Rust implementation of the CIEDE2000 colour difference")
+    (description
+     "Empfindung is a pure-Rust implementation of the CIEDE2000 colour
+difference.")
+    (license license:expat)))
+
 (define-public rust-ena-0.14
   (package
     (name "rust-ena")