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This is the only line that requires curl. Other than that, Live Build
already depends on wget (through debootstrap), so let's use it as it's
already a requirement.

On a Debian unstable system, the file `/etc/debian_version` contains
only `11.0`, so the script `build.sh` gives me this kind of log:

    OS: 11.0

Not super informative. However the file `/usr/lib/os-release` provides
more details, and by using it we can get the following log:

    OS: Debian GNU/Linux 11 (bullseye)

For a Kali system:

    OS: Kali GNU/Linux 2021.2

So that the kali user can run `journalctl` or read log files in
`/var/log`, without the need for sudo.

Fixes: #31

The DVD size limit has been reached and the build currently fails due to
this. We don't really want to burn DVD as ISO images are written on USB
keys and the exact size doesn't really matter for use in virtual
machines. So let's instruct debian-cd to build a bluray image so that
we no longer are annoyed with the size limit.

Fix typo

See merge request !13

At least everywhere where we can end up with the output of "pwd"
in the variable so that we don't break when some directory has
spaces or other unusual characters in it.

They remove thousands of files and the output is overwhelming, moving
away any useful history out of the terminal history.

On my system, "images" is a symlink pointing to another directory and I
want to ignore that symlink too.

This reverts commit d2b4645f.

Initial commit said “run_and_log doesn't like redirects, but I don't
think thats an issue” but it is a real issue when the whole point of the
command is to modify/overwrite a file with a redirection.

Keep only run_and_log for the final file moves.

Trailing spaces are meaningful, they are a separator between the type
of the field and the empty value that follows!

This reverts commit e695c81d.

The default profile is always enabled by simple-cdd and we want to
override it!

This reverts commit c6b70bf3.

Consistencies between installer and live images

See merge request !12

"Start installer with speech synthesis"