Bootspec is a set of memoized facts about a system's closure. The top-level object may contain arbitrary further keys ("extensions") whose semantics may be defined by third parties. The use of reverse-domain-name namespacing is recommended in order to avoid name collisions.
Nix store path to the stage-2 init, executed by initrd (if present).
List of kernel parameters
No Additional ItemsA kernel parameter in the form key[=value], e.g., loglevel=4 or quiet
Must match regular expression:^[a-zA-Z0-9._-]+(=[^\s=]+)?$
[
"amd_iommu=on",
"amd_iommu=pt",
"iommu=pt",
"kvm.ignore_msrs=1",
"kvm.report_ignored_msrs=0",
"udev.log_priority=3",
"systemd.unified_cgroup_hierarchy=1",
"loglevel=4"
]
A human-readable label for the system. It should contain the operating system, kernel version,and other user-relevant information to identify the system. This corresponds loosely to config.system.nixos.label.
"NixOS 21.11.20210810.dirty (Linux 5.15.30)"
Nix system type the bootspec is intended for.
"x86_64-linux"
"aarch64-linux"
Nix store path to a tool that dynamically adds secrets to initrd. Consumers of a bootspec document should copy the file referenced by the initrd key to a writable location, ensure that the file is writable, invoke this tool with the path to the initrd as its only argument, and use the initrd as modified by the tool for booting. This may be used to add files from outside the Nix store to the initrd. This tool is expected to run on the system whose boot specification is being set up, and may thus fail if used on a system where the expected stateful files are not in place or whose CPU does not support the instruction set of the system to be booted. If this field is present and the tool fails, no boot configuration should be generated for the system.
All properties whose name matches the following regular expression must respect the following conditions
Property name regular expression:^.*$
Additional Properties of any type are allowed.
Type: objectAll properties whose name matches the following regular expression must respect the following conditions
Property name regular expression:^.*$
Additional top-level specialisations