When I install Budgie, at some point I can choose between Minimal/Normal and also select 2 options:
When done and after the reboot, Budgie Welcome is shown and via Extras I can scroll down and … install extras! What are these extras versus the option during installation?
Also, what is the command that is being run? I would like to add this command to my post-install because I sometimes forget to select it in the Budgie Welcome screen.
the installer extras are primarily around firmware & drivers that have licensing issues that prevent direct package installation.
For example Broadcom drivers cannot be shipped as a binary - so the source is on the installer and is compiled by the installer as a kernel module.
Similarly, nvidia drivers cannot be pre-installed - so they are installed for you by the installer. The installer works out what the best driver is for your system and installs it.
… and so on for other license incumbant issues.
Budgie Welcome “extras” are application based - basically ubuntu-restricted-extras package.