gnu: Add go-github-com-chai2010-webp.

It was proposed in #62284 on <2023-03-20>.

* gnu/packages/golang-xyz.scm (go-github-com-chai2010-webp): New variable.

Co-authored-by: conses <contact@conses.eu>
Co-authored-by: Miguel Ángel Moreno <mail@migalmoreno.com>
Change-Id: I527296ef658262f3abcf5703c5330e9bb0ccab9e

gnu/packages/golang-xyz.scm

@@ -39,23 +39,25 @@
 ;;; Copyright © 2023 Fries <fries1234@protonmail.com>
 ;;; Copyright © 2023 Hilton Chain <hako@ultrarare.space>
 ;;; Copyright © 2023 Katherine Cox-Buday <cox.katherine.e@gmail.com>
+;;; Copyright © 2023 Miguel Ángel Moreno <mail@migalmoreno.com>
 ;;; Copyright © 2023 Nguyễn Gia Phong <mcsinyx@disroot.org>
 ;;; Copyright © 2023 Nicolas Graves <ngraves@ngraves.fr>
 ;;; Copyright © 2023 Sergey Trofimov <sarg@sarg.org.ru>
 ;;; Copyright © 2023 Thomas Ieong <th.ieong@free.fr>
 ;;; Copyright © 2023 Timo Wilken <guix@twilken.net>
 ;;; Copyright © 2023 Wilko Meyer <w@wmeyer.eu>
+;;; Copyright © 2023 conses <contact@conses.eu>
 ;;; Copyright © 2024 Artyom V. Poptsov <poptsov.artyom@gmail.com>
 ;;; Copyright © 2024 Brian Kubisiak <brian@kubisiak.com>
 ;;; Copyright © 2024 Herman Rimm <herman@rimm.ee>
 ;;; Copyright © 2024 Jean Simard <woshilapin@tuziwo.info>
 ;;; Copyright © 2024 Jesse Eisses <jesse@eisses.email>
 ;;; Copyright © 2024 Luis Higino <luishenriquegh2701@gmail.com>
+;;; Copyright © 2024 Roman Scherer <roman@burningswell.com>
 ;;; Copyright © 2024 Simen Endsjø <contact@simendsjo.me>
 ;;; Copyright © 2024 Spencer Peters <spencerpeters@protonmail.com>
 ;;; Copyright © 2024 Troy Figiel <troy@troyfigiel.com>
 ;;; Copyright © 2024 gemmaro <gemmaro.dev@gmail.com>
-;;; Copyright © 2024 Roman Scherer <roman@burningswell.com>
 ;;; Copyright © 2025 Ashvith Shetty <ashvithshetty0010@zohomail.in>
 ;;; Copyright © 2025 Jussi Timperi <jussi.timperi@iki.fi>
 ;;; Copyright © 2025 45mg <45mg.writes@gmail.com>
@@ -2551,6 +2553,47 @@ encoding in Go.")
 over strings.")
     (license license:expat)))
 
+(define-public go-github-com-chai2010-webp
+  (package
+    (name "go-github-com-chai2010-webp")
+    (version "1.1.1")
+    (source
+     (origin
+       (method git-fetch)
+       (uri (git-reference
+             (url "https://github.com/chai2010/webp")
+             (commit (string-append "v" version))))
+       (file-name (git-file-name name version))
+       (sha256
+        (base32 "1103iah700q9id04hz37nxbpb25qz13g1ia2r6gdffc3vh2w3riv"))
+       (modules '((guix build utils)))
+       ;; FIXME: The project indludes a copy of libwebp
+       ;; (internal/libwebp-1.5.0) which is availalbe in Guix, find out how to
+       ;; build it with it's source.
+       (snippet
+        #~(begin
+            ;; Remove files which were auto generated by 'go generate'.
+            (for-each delete-file
+                      (find-files "." "^z_libwebp_src_.*\\.c$"))))))
+    (build-system go-build-system)
+    (arguments
+     (list
+      #:import-path "github.com/chai2010/webp"
+      #:phases
+      #~(modify-phases %standard-phases
+          (add-after 'unpack 'go-generate
+            (lambda* (#:key import-path #:allow-other-keys)
+              (with-directory-excursion (string-append "src/" import-path)
+                (invoke "go" "generate")))))))
+    (propagated-inputs
+     (list go-golang-org-x-image))
+    (home-page "https://github.com/chai2010/webp")
+    (synopsis "WebP decoder and encoder for Golang")
+    (description
+     "Package webp implements a decoder and encoder for
+@code{https://en.wikipedia.org/wiki/WebP, WebP} images.")
+    (license license:bsd-3)))
+
 (define-public go-github-com-charlievieth-fastwalk
   (package
     (name "go-github-com-charlievieth-fastwalk")