environment.gnome.excludePackages only prevents the installation of packages that gnome.nix installs, which is none of the ones you list. All extensions installed by default are part of a single package:
Hi @brnix do you know how to remove the gnome-extensions app from building ? I tried so far this : environment.gnome.excludePackages = (with pkgs; [
epiphany # web browser
cheese # webcam tool
geary # email reader
evince # document viewer
totem # video player
baobab
simple-scan # scanner
yelp
file-roller
seahorse
gnome-extension-manager
gnome-font-viewer
gnome-calendar
gnome-calculator
gnome-user-share
gnome-photos
gnome-tour
gnome-user-docs
gnome-browser-connector
gnome-console
gnome-connections
orca
gnome-online-accounts
snapshot
]) ++ (with pkgs.gnome; [
tali # poker game
iagno # go game
hitori # sudoku game
atomix # puzzle game
gnome-remote-desktop
pkgs.gnome-user-docs
gnome-shell-extensions
gnome-online-miners
gnome-characters
gnome-clocks
gnome-maps
gnome-logs
gnome-weather
gnome-software
gnome-contacts
gnome-music
]);