gnu: Add guile3.0-chickadee.

* gnu/packages/game-development.scm (guile3.0-chickadee): New variable.

gnu/packages/game-development.scm

@@ -1766,6 +1766,42 @@ (define-public guile-chickadee
 that parenthetically inclined game developers need to make 2D (and eventually
 3D) games in Scheme, such as:
 
+@enumerate
+@item extensible, fixed-timestep game loop
+@item OpenGL-based rendering engine
+@item keyboard, mouse, controller input
+@item REPL-driven development model
+@end enumerate\n")
+    (license license:gpl3+)))
+
+(define-public guile3.0-chickadee
+  (package
+    (inherit guile-chickadee)
+    (name "guile-chickadee")
+    (version "0.4.0")
+    (source (origin
+              (method url-fetch)
+              (uri (string-append "https://files.dthompson.us/chickadee/"
+                                  "chickadee-" version ".tar.gz"))
+              (sha256
+               (base32
+                "1fdicsgls5cp0yffcm5vjmav67gv9bxhz1s3jvdvinspxb485x7l"))))
+    (build-system gnu-build-system)
+    (propagated-inputs
+     `(("guile-opengl" ,guile3.0-opengl)
+       ("guile-sdl2" ,guile3.0-sdl2)))
+    (inputs
+     `(("guile" ,guile-3.0)))
+    (native-inputs
+     `(("pkg-config" ,pkg-config)
+       ("texinfo" ,texinfo)))
+    (home-page "https://dthompson.us/projects/chickadee.html")
+    (synopsis "Game development toolkit for Guile Scheme with SDL2 and OpenGL")
+    (description "Chickadee is a game development toolkit for Guile Scheme
+built on top of SDL2 and OpenGL.  Chickadee aims to provide all the features
+that parenthetically inclined game developers need to make 2D (and eventually
+3D) games in Scheme, such as:
+
 @enumerate
 @item extensible, fixed-timestep game loop
 @item OpenGL-based rendering engine