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+;;; Commentary:
+;;
+;; Development environment for GNU Guix.
+;;
+;; To setup a development environment and build, run:
+;;
+;;    guix shell
+;;    ./bootstrap
+;;    ./configure
+;;    make -j${nproc}
+;;
+;; To build the development snapshot, run:
+;;
+;;    guix build -f guix.scm
+;;
+;; To install the development snapshot, run:
+;;
+;;    guix install -f guix.scm
+;;
+;;; Code:
+(use-modules (ice-9 match)
+             (srfi srfi-1)
+             (guix build-system gnu)
+             (guix download)
+             (guix gexp)
+             (guix git-download)
+             ((guix licenses) #:prefix license:)
+             (guix packages)
+             (guix utils)
+             (gnu packages)
+             (gnu packages audio)
+             (gnu packages autotools)
+             (gnu packages fontutils)
+             (gnu packages gl)
+             (gnu packages guile)
+             (gnu packages guile-xyz)
+             (gnu packages image)
+             (gnu packages maths)
+             (gnu packages mp3)
+             (gnu packages pkg-config)
+             (gnu packages readline)
+             (gnu packages sdl)
+             (gnu packages texinfo)
+             (gnu packages xiph))
+
+(define target-guile guile-3.0-latest)
+
+(define guile3.0-opengl
+  (package
+    (inherit guile-opengl)
+    (inputs
+     (modify-inputs (package-inputs guile-opengl)
+       (replace "guile" target-guile)))
+    (native-inputs
+     (modify-inputs (package-native-inputs guile-opengl)
+       (append autoconf automake)))
+    (arguments
+     (substitute-keyword-arguments (package-arguments guile-opengl)
+       ((#:phases phases)
+        `(modify-phases ,phases
+           (delete 'patch-makefile)
+           (add-before 'bootstrap 'patch-configure.ac
+             (lambda _
+               ;; The Guile version check doesn't work for the 3.0
+               ;; pre-release, so just remove it.
+               (substitute* "configure.ac"
+                 (("GUILE_PKG\\(\\[2.2 2.0\\]\\)") ""))
+               (substitute* "Makefile.am"
+                 (("\\$\\(GUILE_EFFECTIVE_VERSION\\)") "3.0")
+                 (("ccache") "site-ccache"))
+               #t))
+           (replace 'bootstrap
+             (lambda _
+               (invoke "autoreconf" "-vfi")))))))))
+
+(define guile-sdl2
+  (let ((commit "e9a7f5e748719ce5b6ccd08ff91861b578034ea6"))
+    (package
+      (name "guile-sdl2")
+      (version (string-append "0.7.0-1." (string-take commit 7)))
+      (source (origin
+                (method git-fetch)
+                (uri (git-reference
+                      (url "https://git.dthompson.us/guile-sdl2.git")
+                      (commit commit)))
+                (sha256
+                 (base32
+                  "0ay7mcar8zs0j5rihwlzi0l46vgg9i93piip4v8a3dzwjx3myr7v"))))
+      (build-system gnu-build-system)
+      (arguments
+       '(#:make-flags '("GUILE_AUTO_COMPILE=0")
+         #:phases
+         (modify-phases %standard-phases
+           (add-after 'unpack 'bootstrap
+                      (lambda _
+                        (invoke "sh" "bootstrap"))))))
+      (native-inputs (list autoconf automake pkg-config texinfo))
+      (inputs (list target-guile sdl2))
+      (synopsis "Guile bindings for SDL2")
+      (description "Guile-sdl2 provides pure Guile Scheme bindings to the
+SDL2 C shared library via the foreign function interface.")
+      (home-page "https://git.dthompson.us/guile-sdl2.git")
+      (license license:lgpl3+))))
+
+(define chickadee
+  (let ((commit "4047c0d0a92eae8a7394b4caa479d0cb6dd9017c"))
+    (package
+     (name "chickadee")
+     (version (string-append "0.8.0-1." (string-take commit 7)))
+     (source (origin
+              (method git-fetch)
+              (uri (git-reference
+                    (url "https://git.dthompson.us/chickadee.git")
+                    (commit commit)))
+              (sha256
+               (base32
+                "14aa9bkwrsfl8i81zd0fzn0xryyhn8ac16hwdzx40p5az86nq7k6"))))
+     (build-system gnu-build-system)
+     (arguments
+      '(#:make-flags '("GUILE_AUTO_COMPILE=0")
+        #:phases
+        (modify-phases %standard-phases
+                       (add-after 'unpack 'bootstrap
+                                  (lambda _
+                                    (invoke "sh" "bootstrap"))))))
+     (native-inputs (list autoconf automake pkg-config texinfo))
+     (inputs (list freetype
+                   libjpeg-turbo
+                   libpng
+                   libvorbis
+                   mpg123
+                   openal
+                   readline
+                   target-guile))
+     (propagated-inputs (list guile3.0-opengl guile-sdl2))
+     (synopsis "Game development toolkit for Guile Scheme")
+     (description "Chickadee is a game development toolkit for Guile
+Scheme.  It contains all of the basic components needed to develop
+2D/3D video games.")
+     (home-page "https://dthompson.us/projects/chickadee.html")
+     (license license:gpl3+))))
+
+(define catbird
+  (let ((commit "0cbe11133c71cd853a3653a848edcf62a9d8b6b1"))
+    (package
+     (name "catbird")
+     (version (string-append "0.1.0-1." (string-take commit 7)))
+     (source (origin
+              (method git-fetch)
+              (uri (git-reference
+                    (url "https://git.dthompson.us/catbird.git")
+                    (commit commit)))
+              (sha256
+               (base32
+                "09nf9yjyfpznvrsiwd7zr94c9hl8ncwzr56qxg0qbcq8yd6kmpj4"))))
+     (build-system gnu-build-system)
+     (arguments
+      '(#:make-flags '("GUILE_AUTO_COMPILE=0")
+        #:phases
+        (modify-phases %standard-phases
+                       (add-after 'unpack 'bootstrap
+                                  (lambda _
+                                    (invoke "sh" "bootstrap"))))))
+     (native-inputs (list autoconf automake pkg-config texinfo))
+     (inputs (list target-guile))
+     (propagated-inputs (list chickadee guile-sdl2))
+     (synopsis "Game engine for Scheme programmers")
+     (description "Catbird is a game engine written in Guile Scheme.")
+     (home-page "https://dthompson.us/projects/chickadee.html")
+     (license license:gpl3+))))
+
+(define guile-goblins
+  (package
+   (inherit guile-goblins)
+   (name "guile-goblins")
+   (version "0.9")
+   (source (origin
+            (method git-fetch)
+            (uri (git-reference
+                  (url "https://gitlab.com/spritely/guile-goblins.git")
+                  (commit "43ab238443aca53ed8c935a9d2d2bf309416af5d")))
+            (file-name (string-append name "-" version))
+            (sha256
+             (base32
+              "196pkmi0qmxjwfmfs039mk3vwz7n8g52r1ykfbfa9lvlsqgq8dni"))))))
+
+(define %source-dir (dirname (current-filename)))
+
+(package
+ (name "community-garden")
+ (version "0.1.0")
+ (source (local-file %source-dir
+                     #:recursive? #t
+                     #:select? (git-predicate %source-dir)))
+ (build-system gnu-build-system)
+ (arguments
+  '(#:make-flags '("GUILE_AUTO_COMPILE=0")
+    #:phases
+    (modify-phases %standard-phases
+                   (add-after 'unpack 'bootstrap
+                              (lambda _
+                                (invoke "sh" "bootstrap"))))))
+ (native-inputs (list autoconf automake pkg-config texinfo))
+ (inputs (list target-guile))
+ (propagated-inputs (list catbird guile-goblins))
+ (synopsis "Spritely Goblins demo program")
+ (description "Spritely Goblins demo program")
+ (home-page "https://spritely.institute")
+ (license license:asl2.0))