gnu: Add rust-palette-0.7.

* gnu/packages/crates-graphics.scm (rust-palette-0.7): New variable.

Change-Id: Ia55d3b7788a04a410dacb7f53dcb2d2909f026c6
Signed-off-by: Efraim Flashner <efraim@flashner.co.il>

gnu/packages/crates-graphics.scm

@@ -1911,6 +1911,50 @@ graphics and video games.")
     (description "This package provides OSMesa library bindings for Rust.")
     (license license:cc0)))
 
+(define-public rust-palette-0.7
+  (package
+    (name "rust-palette")
+    (version "0.7.3")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "palette" version))
+       (file-name (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32 "1p2inf23vsqy06w7vp7rcxmb9vk91asib534m9cafykn8x0z7qmj"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:tests? #f  ; Regression tests not included.
+       #:cargo-inputs
+       (("rust-approx" ,rust-approx-0.5)
+        ("rust-bytemuck" ,rust-bytemuck-1)
+        ("rust-fast-srgb8" ,rust-fast-srgb8-1)
+        ("rust-libm" ,rust-libm-0.2)
+        ("rust-palette-derive" ,rust-palette-derive-0.7)
+        ("rust-phf" ,rust-phf-0.11)
+        ("rust-rand" ,rust-rand-0.8)
+        ("rust-serde" ,rust-serde-1)
+        ("rust-wide" ,rust-wide-0.7))
+       #:cargo-development-inputs
+       (("rust-clap" ,rust-clap-3)
+        ("rust-criterion" ,rust-criterion-0.4)
+        ("rust-csv" ,rust-csv-1)
+        ("rust-enterpolation" ,rust-enterpolation-0.2)
+        ("rust-image" ,rust-image-0.23)
+        ("rust-lazy-static" ,rust-lazy-static-1)
+        ("rust-rand-mt" ,rust-rand-mt-4)
+        ("rust-ron" ,rust-ron-0.8)
+        ("rust-scad" ,rust-scad-1)
+        ("rust-serde" ,rust-serde-1)
+        ("rust-serde-derive" ,rust-serde-derive-1)
+        ("rust-serde-json" ,rust-serde-json-1))))
+    (home-page "https://github.com/Ogeon/palette")
+    (synopsis "Convert and manage colors")
+    (description
+     "This package provides converting and managing colors in Rust with a focus
+on correctness, flexibility and ease of use.")
+    (license (list license:expat license:asl2.0))))
+
 (define-public rust-palette-derive-0.7
   (package
     (name "rust-palette-derive")