gnu: Add sugar-typing-turtle-activity.

* gnu/packages/sugar.scm (sugar-typing-turtle-activity): New variable.

gnu/packages/sugar.scm

@@ -384,3 +384,41 @@ (define-public sugar-help-activity
       (description "This is an activity for the Sugar environment which aims
 to provide users with easy access to documentation and manuals.")
       (license license:gpl3+))))
+
+(define-public sugar-typing-turtle-activity
+  (package
+    (name "sugar-typing-turtle-activity")
+    (version "32")
+    (source (origin
+              (method git-fetch)
+              (uri (git-reference
+                    (url "https://github.com/sugarlabs/typing-turtle-activity")
+                    (commit (string-append "v" version))))
+              (file-name (git-file-name name version))
+              (sha256
+               (base32
+                "0shadv9wgddjvl97kvsqb8iw1wmmfw5lzcqk78hd70pzvh4c1hmd"))))
+    (build-system python-build-system)
+    (arguments
+     (list
+      #:test-target "check"
+      #:phases
+      #~(modify-phases %standard-phases
+          (add-after 'unpack 'patch-launcher
+            (lambda* (#:key inputs #:allow-other-keys)
+              (substitute* "activity/activity.info"
+                (("exec = sugar-activity3")
+                 (string-append "exec = "
+                                (search-input-file inputs "/bin/sugar-activity3"))))))
+          (replace 'install
+            (lambda _
+              (invoke "python" "setup.py" "install"
+                      (string-append "--prefix=" #$output)))))))
+    (native-inputs
+     (list gettext-minimal sugar-toolkit-gtk3))
+    (home-page "https://help.sugarlabs.org/en/typing_turtle.html")
+    (synopsis "Learn typing")
+    (description "Need some help typing?  In this activity for the Sugar
+environment you will learn the best way to hold your hands in order for you to
+become a faster typist.")
+    (license license:gpl3+)))