rosenthal: Add emacs-wakatime-mode.

* rosenthal/packages/emacs-xyz.scm (emacs-wakatime-mode): New variable.

rosenthal/packages/emacs-xyz.scm

@@ -98,3 +98,34 @@
                 (sha256
                  (base32
                   "1bqhn6pvsgs1x882q7y5p372aify2jmyfmgmx99nzakxbfkb0yqp")))))))
+
+;; https://debbugs.gnu.org/cgi/bugreport.cgi?bug=59552
+(define-public emacs-wakatime-mode
+  ;; No release since May 5, 2015.
+  (let ((version "1.0.2") ;32a0154cd4bbd525d354997e6b12c6a9726d0b43, not tagged
+        (revision "55")
+        (commit "ef923829912c3854d230834f81083814b7c9d992"))
+    (package
+      (name "emacs-wakatime-mode")
+      (version (git-version version revision commit))
+      (source (origin
+                (method git-fetch)
+                (uri (git-reference
+                      (url "https://github.com/wakatime/wakatime-mode")
+                      (commit commit)))
+                (file-name (git-file-name name version))
+                (sha256
+                 (base32
+                  "0m29817s2din4n42pflvzg2538i91s0n06y78pf8q94qf0mfspcl"))))
+      (build-system emacs-build-system)
+      (arguments
+       (list #:phases
+             #~(modify-phases %standard-phases
+                 ;; XXX: WakaTime hasn't packaged in Guix yet.
+                 (delete 'patch-el-files))))
+      (home-page "https://wakatime.com/emacs")
+      (synopsis "Automatic time tracking extension for Emacs using WakaTime")
+      (description
+       "@code{wakatime-mode} is an Emacs plugin for automatic time tracking
+and metrics generated from your programming activity.")
+      (license license:gpl3+))))