Add support for systemd-sysext/confext

[gitirabassi]

Is your feature request related to a problem? Please describe.

These are new type of packages that systemd supports to extend the base OS. systemd-sysupdate handles upgrades

These packages are basically squashfs/erofs images with files inside. systemd-sysext just layers them on top of the OS.

https://www.freedesktop.org/software/systemd/man/latest/systemd-sysext.html

Also called Discoverable Disk Images (DDIs) by lenard

Describe the solution you'd like

With the addition of https://pkg.go.dev/github.com/erofs/go-erofs should be "easy" to add an additional Packager implementation

Describe alternatives you've considered

There is no stardard declarative way to create DDIs. systemd-repart can be used or OCI images piped into a read-only fs

Search

• I did search for other open and closed issues before opening this.

Code of Conduct

• I agree to follow this project's Code of Conduct

Additional context

No response

[caarlos0]

don't have bandwidth for it right now, but sounds interesting.