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nixos: Add iso_minimal_new_kernel_no_zfs

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Support for ZFS, while desirable, is problematic with newer kernel
releases. The stable ZFS release seldom supports the current newest
kernel version, and this makes the new_kernel iso basically useless as
it cannot be published, and is not often built with new kernel releases.

This uses a dirty workaround to work around the fact it is impossible to
remove a list item from a modules system list type. Since ZFS support is
conditional to being supported on the current platform, we can fake ZFS
not being supported *for the no-zfs build only*. This overlay is only
added when evaluating the iso, nothing else.
This commit is contained in:
Samuel Dionne-Riel 2022-12-22 23:00:14 -05:00
parent 04f574a1c0
commit 35bb28b367
2 changed files with 25 additions and 2 deletions
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15
nixos/modules/installer/cd-dvd/installation-cd-minimal-new-kernel-no-zfs.nix Normal file
View file

@ -0,0 +1,15 @@
{ pkgs, ... }:
{
imports = [ ./installation-cd-minimal-new-kernel.nix ];
# Makes `availableOn` fail for zfs, see <nixos/modules/profiles/base.nix>.
# This is a workaround since we cannot remove the `"zfs"` string from `supportedFilesystems`.
# The proper fix would be to make `supportedFilesystems` an attrset with true/false which we
# could then `lib.mkForce false`
nixpkgs.overlays = [(final: super: {
zfs = super.zfs.overrideAttrs(_: {
meta.platforms = [];
});
})];
}

12
nixos/release.nix
View file

@ -181,14 +181,22 @@ in rec {
inherit system;
});
# A variant with a more recent (but possibly less stable) kernel
# that might support more hardware.
# A variant with a more recent (but possibly less stable) kernel that might support more hardware.
# This variant keeps zfs support enabled, hoping it will build and work.
iso_minimal_new_kernel = forMatchingSystems [ "x86_64-linux" "aarch64-linux" ] (system: makeIso {
module = ./modules/installer/cd-dvd/installation-cd-minimal-new-kernel.nix;
type = "minimal-new-kernel";
inherit system;
});
# A variant with a more recent (but possibly less stable) kernel that might support more hardware.
# ZFS support disabled since it is unlikely to support the latest kernel.
iso_minimal_new_kernel_no_zfs = forMatchingSystems [ "x86_64-linux" "aarch64-linux" ] (system: makeIso {
module = ./modules/installer/cd-dvd/installation-cd-minimal-new-kernel-no-zfs.nix;
type = "minimal-new-kernel-no-zfs";
inherit system;
});
sd_image = forMatchingSystems [ "armv6l-linux" "armv7l-linux" "aarch64-linux" ] (system: makeSdImage {
module = {
armv6l-linux = ./modules/installer/sd-card/sd-image-raspberrypi-installer.nix;