gnu: Add guile3.0-chickadee.

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

gnu/packages/game-development.scm

@@ -1766,6 +1766,42 @@ 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
+@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