Take another look at lorax

[castrojo]

Got some feedback from reddit that I wanted to capture here: https://www.reddit.com/r/Fedora/comments/11lefhy/ublues_nvidia_images_are_now_10/jbdpnm5/

Here's an older repo for a custom-ostree. ostree configs are a list of packages, an optional post-setup script, and some repos.

It can then be glued onto the existing ostree work to use OCI images as an update source.

And they use Lorax to put a partial KS in place, which could just as easily be something this if more customization was desired:

lorax --product='Your OS' \
  --version=1.0.0 \
  --release=$(date +%Y%m%d) \
  --variant=YOUROS \
  --installpkgs fedora-release* \
  --installpkgs ostree* \
  --nomacboot \
  --volid=YOUROS-x86_64-1.0.0.fc37 \
  --add-template=/builddir/lorax-templates/lorax-configure-repo.tmpl \
  --add-template=/builddir/lorax-templates/lorax-embed-repo.tmpl \
  --add-template-var=ostree_install_repo=file:///builddir/repo \
  --add-template-var=ostree_update_repo=http://example.com/ostree \
  --add-template-var=ostree_osname=your-os \
  --add-template-var=ostree_oskey=your-os-primary \
  --add-template-var=ostree_contenturl=http://example.com/ostree \
  --add-template-var=ostree_install_ref=fedora/37/... \
  --add-template-var=ostree_update_ref=fedora/37/...-updates \
  --logfile=/builddir/lorax.log \
  --tmp=/builddir/tmp \
  --rootfs-size=8 \
  /builddir/completed-iso"
mock -r fedora-37-x86_64 --copyout /builddir/completed-iso/images/boot.iso $(pwd)/completed-iso/YOUROS-x86_64.1.0.0.el8.iso

You can now make your own OSTree spin.

This is a great effort. It's hard to understand what's going on because not a lot of people do this (or need to, or want to), but it's pretty much stitching together the normal build process for Silverblue with a couple of packages which are part of the base image rather than overlays.