Use bootc switch --mutate-in-place for the Anaconda Container Installer

[supakeen]

bootc switch is growing a new hidden option to change the origin in-place, we can use this in %post for the container installer to set the offline installer's origin to the right place: containers/bootc#264

[cgwalters]

I looked into this and the main thing seems to be plumbing through all the layers of abstraction from:

• bib
• NewAnacondaContainerInstaller()
• AnacondaInstallerISOTree::serialize()
• osbuild.NewKickstartStageOptionsWithOSTreeContainer
• osbuild.NewKickstartStage

all the way to the org.osbuild.kickstart python code in osbuild - which does not seem to support %post.

So I think it'd be a matter of:

• adding post to that
• changing osbuild.NewKickstartStageOptionsWithOSTreeContainer

[cgwalters]

I guess though now I wonder whether it'd be worth trying to just add the kickstart option, given how prominent this is.

[cgwalters]

I did pykickstart/pykickstart#471 just to try to start something here.

[supakeen]

Right now we have a shortcut in images to work with the relatively quickly changing landscape of this and write a kickstart file directly: https://github.com/osbuild/images/blob/main/pkg/manifest/anaconda_installer_iso_tree.go#L383

Though I much prefer having a kickstart option like you just linked because that's easier to move into the stage :)

[cgwalters]

Thanks yes, I just discovered that 😄

I'm attempting to hack this up right now.