Minifiy nvidia jetson orin image

[remimimimimi]

Related to #45.
I reduced the image size from 1.9GB to 1.2GB by configuring qemu, systemd, and git. Next step will be apply @vadika kernel config.

[vilvo]

I'd like to see git on image via modules/development/essentials.nix but this is good for now.

We can mark it as # XXX (or # TODO:) for now.

On most minimal host profile git should not be needed - even for updates.

[remimimimimi]

I’ve done overlay for git because of microvm. It uses it internally in the host nixos module, and with this overlay, image size was reduced by 200mb. So it is actually unrelated to the development environment, but if you want to add git to devenv you should be aware of this change.

It also can be done with a little hack for microvm module, by overlaying packages especially for it. But for now, let it be this way.

[vilvo]

Related to #45. I reduced the image size from 1.9GB to 1.2GB by configuring qemu, systemd, and git. Next step will be apply @vadika kernel config.

Super nice work. I think we can remove "Draft" from this and go and review and merge this. More minimal kernel config warrants a PR of its' own. Same for the # XXX-ideas.

[vilvo]

It definitely reduces the image size:

ghaf (54521a6) [?] # this PR
❯ ls -lah result/nixos.img
Permissions Size User Date Modified Name
.r--r--r--  5.1G root  1 Jan  1970  result/nixos.img

ghaf (197f9dc) [?] # main
❯ ls -lah result/nixos.img
Permissions Size User Date Modified Name
.r--r--r--  5.7G root  1 Jan  1970  result/nixos.img

As of now, "This branch cannot be rebased due to conflicts"
so please rebase your fork branch with the ghaf-repo main and resolve conflicts.

While at it, I'd prefer you squash the commits in your PR and also please add DCO (Developer Certificate of Origin) with signed-off-by: to the PR commit(s).

[vilvo]

Looks good to me. Basics work - boots, ssh, netvm starts. Reduces the image and host size.
None disabled features are critical for now but we may want to come back to TPM support and such later.

[unbel13ver]

Great work, approved.
The only note: probably, your work should be rebased on top of @mikatammi 's "The great refactor" first.

[mikatammi]

In general I'd like to say good work and nice investigation

Now that the_great_refactor has been merged, I'd put the import of ../configurations/host/minimal.nix into the targets/common-release.nix

[mikatammi]

One thing I've noticed during my builds, is that both qemu and qemu-host-cpu-only -packages get built, even though the ghaf currently doesn't even use QEMU. So it shouldn't be building QEMU at all but for some reason it does. I haven't checked the dependency tree to see what pulls it in

[vilvo]

One thing I've noticed during my builds, is that both qemu and qemu-host-cpu-only -packages get built, even though the ghaf currently doesn't even use QEMU. So it shouldn't be building QEMU at all but for some reason it does. I haven't checked the dependency tree to see what pulls it in

I would not optimize QEMU out from development supporting packages. It's still the swiss-knife of VMMs to test KVM supported functionality when somethings do not work out-of-the box with other VMMs.

[vilvo]

In general I'd like to say good work and nice investigation

Now that the_great_refactor has been merged, I'd put the import of ../configurations/host/minimal.nix into the targets/common-release.nix

Please go ahead. @remimimimimi 's work is still early and I have not heard updates from it for a while. ../configurations/host/minimal.nix can be a placeholder for that work and support the general ghaf macro structure.