patos/flake.nix

88 lines
2.6 KiB
Nix

{
description = "PatOS is a minimal, immutable Linux distribution specialized for the Patagia Platform.";
inputs = {
nixpkgs.url = "github:nixos/nixpkgs?ref=nixos-unstable";
};
outputs = { self, nixpkgs }: {
lib = {
# Prepare an update package for the system.
mkUpdate = nixos:
let
config = nixos.config;
pkgs = nixpkgs.legacyPackages.x86_64-linux.pkgs;
in
nixos.pkgs.runCommand "update-${config.system.image.version}"
{
nativeBuildInputs = with pkgs; [ xz ];
} ''
mkdir -p $out
xz -1 -cz ${config.system.build.uki}/${config.system.boot.loader.ukiFile} \
> $out/${config.system.boot.loader.ukiFile}.xz
xz -1 -cz ${config.system.build.image}/${config.boot.uki.name}_${config.system.image.version}.store.raw \
> $out/${config.boot.uki.name}_${config.system.image.version}.img.xz
'';
# Prepare a ready-to-boot disk image.
mkInstallImage = nixos:
let
config = nixos.config;
pkgs = nixpkgs.legacyPackages.x86_64-linux.pkgs;
in
nixos.pkgs.runCommand "update-${config.system.image.version}"
{
nativeBuildInputs = with pkgs; [ qemu ];
} ''
mkdir -p $out
qemu-img convert -f raw -O qcow2 -C ${config.system.build.image}/${config.boot.uki.name}_${config.system.image.version}.raw $out/disk.qcow2
'';
};
devShells.x86_64-linux.default =
let
pkgs = nixpkgs.legacyPackages.x86_64-linux;
in
pkgs.mkShell {
packages = [
self.packages.x86_64-linux.qemu-efi
];
};
packages.x86_64-linux = {
default = self.packages.x86_64-linux.patos_image;
patos_image = self.lib.mkInstallImage self.nixosConfigurations.patos;
patos_update = self.lib.mkUpdate self.nixosConfigurations.patos;
# A helper script to run the disk images above.
qemu-efi =
let
pkgs = nixpkgs.legacyPackages.x86_64-linux;
in
pkgs.writeShellApplication {
name = "qemu-efi";
runtimeInputs = [ pkgs.qemu_kvm ];
text = ''
qemu-system-x86_64 \
-smp 2 -m 2048 -machine q35,accel=kvm \
-bios ${pkgs.OVMF.fd}/FV/OVMF.fd \
-snapshot \
-display none \
-serial stdio "$@"
'';
};
};
nixosConfigurations = {
patos = nixpkgs.lib.nixosSystem {
system = "x86_64-linux";
modules = [
./base.nix
];
};
};
};
}