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nixos/toplevel: move systemBuilder for boot.kernel.enable

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This avoids creating a build-time reference on `boot.kernelParams` if
the configuration does not use a kernel, i.e., `boot.kernel.enable` is
set to `false`.
This commit is contained in:
Vincent Haupert 2023-08-02 12:40:51 +02:00
parent 69a04542c7
commit fbebce610f
2 changed files with 33 additions and 31 deletions
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32
nixos/modules/system/activation/top-level.nix
View file

@ -4,38 +4,9 @@ with lib;
let
systemBuilder =
let
kernelPath = "${config.boot.kernelPackages.kernel}/" +
"${config.system.boot.loader.kernelFile}";
initrdPath = "${config.system.build.initialRamdisk}/" +
"${config.system.boot.loader.initrdFile}";
in ''
''
mkdir $out
# Containers don't have their own kernel or initrd. They boot
# directly into stage 2.
${optionalString config.boot.kernel.enable ''
if [ ! -f ${kernelPath} ]; then
echo "The bootloader cannot find the proper kernel image."
echo "(Expecting ${kernelPath})"
false
fi
ln -s ${kernelPath} $out/kernel
ln -s ${config.system.modulesTree} $out/kernel-modules
${optionalString (config.hardware.deviceTree.package != null) ''
ln -s ${config.hardware.deviceTree.package} $out/dtbs
''}
echo -n "$kernelParams" > $out/kernel-params
ln -s ${initrdPath} $out/initrd
ln -s ${config.system.build.initialRamdiskSecretAppender}/bin/append-initrd-secrets $out
ln -s ${config.hardware.firmware}/lib/firmware $out/firmware
''}
${if config.boot.initrd.systemd.enable then ''
cp ${config.system.build.bootStage2} $out/prepare-root
substituteInPlace $out/prepare-root --subst-var-by systemConfig $out
@ -83,7 +54,6 @@ let
systemd = config.systemd.package;
kernelParams = config.boot.kernelParams;
nixosLabel = config.system.nixos.label;
inherit (config.system) extraDependencies;

32
nixos/modules/system/boot/kernel.nix
View file

@ -309,6 +309,38 @@ in
system.modulesTree = [ kernel ] ++ config.boot.extraModulePackages;
# Not required for, e.g., containers as they don't have their own kernel or initrd.
# They boot directly into stage 2.
system.systemBuilderArgs.kernelParams = config.boot.kernelParams;
system.systemBuilderCommands =
let
kernelPath = "${config.boot.kernelPackages.kernel}/" +
"${config.system.boot.loader.kernelFile}";
initrdPath = "${config.system.build.initialRamdisk}/" +
"${config.system.boot.loader.initrdFile}";
in
''
if [ ! -f ${kernelPath} ]; then
echo "The bootloader cannot find the proper kernel image."
echo "(Expecting ${kernelPath})"
false
fi
ln -s ${kernelPath} $out/kernel
ln -s ${config.system.modulesTree} $out/kernel-modules
${optionalString (config.hardware.deviceTree.package != null) ''
ln -s ${config.hardware.deviceTree.package} $out/dtbs
''}
echo -n "$kernelParams" > $out/kernel-params
ln -s ${initrdPath} $out/initrd
ln -s ${config.system.build.initialRamdiskSecretAppender}/bin/append-initrd-secrets $out
ln -s ${config.hardware.firmware}/lib/firmware $out/firmware
'';
# Implement consoleLogLevel both in early boot and using sysctl
# (so you don't need to reboot to have changes take effect).
boot.kernelParams =