Add redshift (Screen color temperature manager)
(user-home
redshift-home-type
(redshift-configuration
(tray? #t)
(latitude "25.7617")
(longitude "80.1918")))
(user-home
redshift-home-type
(redshift-configuration
(tray? #t)
(latitude "25.7617")
(longitude "80.1918")))