boot.initrd.compressor

The compressor to use on the initrd image. May be any of:

• The name of one of the predefined compressors, see pkgs/build-support/kernel/initrd-compressor-meta.nix for the definitions.
• A function which, given the nixpkgs package set, returns the path to a compressor tool, e.g. pkgs: "${pkgs.pigz}/bin/pigz"
• (not recommended, because it does not work when cross-compiling) the full path to a compressor tool, e.g. "${pkgs.pigz}/bin/pigz"

The given program should read data from stdin and write it to stdout compressed.

Type

string or function that evaluates to a(n) string

Default

zstd if the kernel supports it (5.9+), gzip if not

Example

"xz"

Declared

<nixpkgs/nixos/modules/system/boot/stage-1.nix>