Hello Guix!

Based on information from [1], [2], [3] and [4]; I have formulated a
chart to keep track of things easily. :-)

CHART: https://calc.disroot.org/2nu6mpf88ynq.html

As a start, I will be working on packaging gnome-contacts, gnome-music
and gnome-weather.

If anyone performed anything from chart, please let me know and I will
update the chart accordingly.

[1] https://git.savannah.gnu.org/cgit/guix.git

[2] 
https://blogs.gnome.org/mcatanzaro/2017/08/13/gnome-3-26-core-applications/

[3] https://blogs.gnome.org/mcatanzaro/2016/09/21/gnome-3-22-core-apps/

[4] https://issues.guix.gnu.org/issue/35586

Regards,
RG.