🌱 Split elemental-cli into a lifecycle manager for the system (install/upgrade) and a building component

[mudler]

The building bits should be part of osbuilder, and renamed accordingly.

This is a "cosmetical change" as the lib will still be in one place, and just the cmd/bin starters

Action items

• Extract the building functionality to a new binary
• Use the new "building" binary in osbuilder and auroraboot (instead of elemental-cli). osbuilder/auroraboot should no longer depend on elemental-cli (just the new binary).
• Rename elemental-cli to something that reflects its "installer/upgrader" nature.
• Use the new "installer/upgrader" binary in kairos (replacing elemental-cli everywhere). For a couple of releases, let's maintain a symlink pointing elemental-cli to the new binary. We should show a deprecation warning.
• Adapt the architecture docs which refers to elemental-toolkit and elemental-cli and adapt accordingly.
• get rid of manual pinning here: https://github.com/kairos-io/osbuilder/blob/d8a56badc11aa1a9f797e45ff82c813075f41ed8/tools-image/Dockerfile#L26

[Itxaka]

But wait! There is more: #1167

[jimmykarily]

We'll do this: #1210

[mudler]

@Itxaka @jimmykarily I think we can close this, right? or there is anything pending? maybe we just have to get rid of the elemental-cli references?

[jimmykarily]

This issue describes the original idea. Since then, we decided to merge the lifecycle parts of elemental-cli to the kairos-agent and the building parts somewhere in the osbuilder (which hasn't happened yet). Also the kairos-agent still shells out to elemental-cli for some of the things it does. In other words, we need to:

• stop shelling out to elemental-cli from kairos-agent, copy over the code and make it native functionality in kairos-agent
• remove all references to elemental-cli from docs/code/everywhere #1438
• Move the building functionality to osbuilder
• archive the elemental-cli repository

I don't think this is the right issue to track this work, after all it describes an older idea, but I don't know which issue it the right one. Let's discuss this in tomorrow's planning an make sure we capture the remaining work.

[jimmykarily]

Moved some work here: #1633