Coding style:
- bash syntax
- variables are named _BIG, only exception is /etc/archboot/*.conf 
  mkinitcpio only understands HOOKS etc.
- functions are named _small

Use:
- bash
- curl for downloading files 
- systemd
- shellcheck

Don't use:
- fuse, perl, python

Kernel Modules:
- only modules that are needed to access filesystems, input, network
  video and virtualization
- only network modules for max. 1 Gigabit.