Re: [PATCH optional] linux: use 6.18 for generic images

[Alyssa Ross <hi@alyssa.is>]

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colbyt <colby@colbyt.com> writes:

> Keep the generic rootfs, app VM, net VM, and installer on the linux_6_18
> package set after updating nixpkgs.
>
> This is an optional conservative variant for deployments that should stay
> on the Linux 6.18 LTS line instead of following linux_latest to Linux
> 7.1.1. With the new nixpkgs pin, that keeps the LTS track while updating
> from Linux 6.18.2 to Linux 6.18.36.
>
> Tested with the full integration suite on Linux 6.18.36.
>
> Signed-off-by: colbyt <colby@colbyt.com>

In Spectrum proper I'd like to stick to the latest stable kernels.
There are a few reasons for this:

• Backports, including security fixes, to older kernels are best-effort,
  and sometimes end up getting missed.
• By working with newer kernels we catch regressions faster.  The longer
  it takes for a regression to be found, the more difficult it can be to
  get it fixed (e.g. because there's a higher chance somebody has
  started depending on the new behaviour).
• New features from new kernels!

Naturally, some specialized deployments might still prefer to pin a
kernel version, and Spectrum should facilitate this as long as it
doesn't cause undue maintenance overhead.

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