gnome todo and gnome sound recorder should not be in default installation, honoring the Arch Linux philosophy. These packages are not even pre installed on other major linux distributions.
Also think that we should patch mkinitcpio, not replace it.
Especially in the btrfs case where we simply just want to add `btrfs` to the `MODULES` section.
archinstall should be callable from the command-line.
Previously this was achieved with a shell script,
however Python packages contain a built in way to to
this via the entry points mechanism.