Reproduce packages from one user to another

Export configuration manifest

guix package --export-manifest > manifest.scm

Export channels

guix describe -f channels > channels.scm

Reproducing on Target machine

guix time-machine -C channels.scm --package -m manifest.scm

Installing tamil language in Gnu guix

As I have recently installed gnu guix I needed tamil 99 keyboard and also when opening the web pages it was coming as boxes. I have installed by below command for user wise

guix install font-lohit font-gnu-freefont font-google-noto emacs-tamil99

Once Installed i have restarted the system to apply changes

Open emacs and press C-\ to change the keyboard input method and type tamil99.