Add Support for Clear Linux OS

[antonym]

Add support for Clear Linux OS:

https://clearlinux.org/

[thelamer]

pxe tarballs https://cdn.download.clearlinux.org/releases/32020/clear/clear-32020-pxe.tar.xz

[thelamer]

This pxe booter is 100% automated with a yaml and is always data destructive.
https://github.com/clearlinux/clr-installer/blob/master/scripts/installer.yaml
From an internet based perspective people would need to provide YAML_URL below to even boot this properly.

Boot snippet:

kernel linux quiet init=/usr/lib/systemd/systemd-bootchart initcall_debug tsc=reliable no_timer_check noreplace-smp rw clri.descriptor=${YAML_URL} initrd=initrd
initrd initrd

I can host the assets , but wanted to make sure you want to add this to the menus given this info.

[antonym]

So we'd probably need to add an option for overriding the default yaml and possibly make a note saying it's destructive? Are there any live options that don't modify the disk?

[thelamer]

No we can't provide the yaml even it is completely custom.
They need to make the yaml and host it somewhere

[antonym]

That's what I mean, just an option to specify your custom yaml location if the user wants to override the default.

[thelamer]

Their is no default it is non functional without a custom yaml

[antonym]

Ah, I thought https://github.com/clearlinux/clr-installer/blob/master/scripts/installer.yaml was the default... well we can table this for now if we want then.

[antonym]

Maybe we just switch to the ISO installer:

https://docs.01.org/clearlinux/latest/get-started/bare-metal-install-server.html

[thelamer]

There is no way to retrieve a squash with their hooks in that ISO. (they do their own custom init scripts and hooks nothing for ingesting a squash from a remote server)
That pxe tarball has a fat initrd with a bunch of shit in it, but the logic all revolves around loading an automated installer yaml for the variables to use for the non interactive installation.

See here : clearlinux/distribution#1371

[dragon788]

According to their PXE installation documentation, it is possible to boot without automatically installing, but that documentation could be out of date.

https://docs.01.org/clearlinux/latest/get-started/ipxe-install.html#add-clr-installer-yaml-configuration-files
In the Note immediately above this section heading it mentions that without a directive it will just boot.