gnu: Add julia-codetracking.

* gnu/packages/julia-xyz.scm (julia-codetracking-0.5.8): New variable.

gnu/packages/julia-xyz.scm

@@ -1598,3 +1598,24 @@ package are:
 @item @strong{Smart}.  Attempts to figure out what you want it to do
 @end enumerate")
     (license license:expat)))
+
+(define-public julia-codetracking
+  (package
+    (name "julia-codetracking")
+    (version "0.5.8")
+    (source
+     (origin
+       (method git-fetch)
+       (uri (git-reference
+             (url "https://github.com/timholy/CodeTracking.jl")
+             (commit (string-append "v" version))))
+       (file-name "CodeTracking")
+       (sha256
+        (base32 "0w1kwhzmvn5snxj28l7syx1f3hzdd03zb6fni7xx29ghccp00zww"))))
+    (build-system julia-build-system)
+    (home-page "https://github.com/timholy/CodeTracking.jl")
+    (synopsis "It's editing-time, do you know where your methods are?")
+    (description "@code{CodeTracking} is a minimal package designed to work
+with @code{Revise.jl}.  Its main purpose is to support packages that need to
+interact with code that might move around as it gets edited.")
+    (license license:expat)))