Identify unnecessary packages about image-builder-rpi

[MathiasRenner]

This is a comparison on packages between HypriotOS and Raspbian Lite

curl http://mathias-renner.de/dl/compare

On the left side you see packages that are unique in Raspbian Lite. On the right side the ones that are unique in HypriotOS.

After evaluating this, I suggest these categories:

Can be purged:

• git-man (saves 1.3 MB): IMHO manpages can be removed. The ones on the workstation can be used in stead.
• git-core (saves 21.5 KB): Is a dummy package because it has been renamed to just git (http://askubuntu.com/questions/5930/what-are-the-differences-between-the-git-and-git-core-packages)
• liberror-perl (saves 19 MB) : Not used anywhere. Depends on perl which will then also be purged
• ethtool (saves 248 KB): It's installed in chroot script only to execute a test in test-integration/spec/hypriotos-image/base/rpi3_wifi_spec.rb
• htop (saves 135 KB): Cool, but not necessary
• bluetooth: This is a GUI that can be removed (http://www.cnet.com/how-to/how-to-setup-bluetooth-on-a-raspberry-pi-3/). Instead we should stick to pi-bluetooth. This listing shows the GUI package obexd:

$ apt-cache depends bluetooth
bluetooth
  Depends: bluez
  Suggests: <bluez-cups>
  Suggests: <bluez-obexd>

$ apt-cache depends pi-bluetooth
pi-bluetooth
  Depends: init-system-helpers
  Depends: bluez
  Depends: bluez-firmware

Can't be removed:

• curl is used to install Docker in chroot-script.sh and a dpenency of git (but git might be removed!)
• aufs is used by Docker
• apt-transport-https is required when adding our packagecloud packages
• libapparmor1: Required by Docker

Maybe remove:

• git (saves 19 MB) is useful but maybe not for everyone

[StefanScherer]

Closing due to inactivity.