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genodepkgs/nixos-modules/genode-init.nix

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Nix

# genodeInit.children is an attrset of nixos configurations, like containers
{ config, pkgs, lib, ... }:
with lib;
{
imports = [ ];
options.genode.init = {
config = mkOption {
description = "Dhall configuration of this init instance";
type = types.nullOr types.str;
default = null;
};
inputs = mkOption {
description = "List of packages to build a ROM store with.";
type = types.listOf types.package;
};
children = mkOption {
type = let
childOptions = { name, ... }: {
name = mkOption { type = types.str; };
dhallAttrs = mkOption { type = types.str; };
};
in types.attrsOf (types.submodule childOptions);
};
subinits = mkOption {
type = types.attrsOf (types.submodule ({ config, options, name, ... }: {
options = {
config = mkOption {
description = ''
A specification of the desired configuration of this sub-init, as a NixOS module.
'';
type =
let confPkgs = if config.pkgs == null then pkgs else config.pkgs;
in lib.mkOptionType {
name = "Toplevel NixOS config";
merge = loc: defs:
(import (confPkgs.path + "/nixos/lib/eval-config.nix") {
inherit system;
pkgs = confPkgs;
baseModules =
import (confPkgs.path + "/nixos/modules/module-list.nix");
inherit (confPkgs) lib;
modules = let
extraConfig = {
_file = "module at ${__curPos.file}:${
toString __curPos.line
}";
config = { };
};
in [ extraConfig ] ++ (map (x: x.value) defs);
prefix = [ "containers" name ];
}).config;
};
};
pkgs = mkOption {
type = types.nullOr types.attrs;
default = null;
example = literalExample "pkgs";
description = ''
Customise which nixpkgs to use for this container.
'';
};
};
config = mkMerge [
(mkIf options.config.isDefined {
path = config.config.system.build.toplevel;
})
];
}));
default = { };
};
};
config = {
system.build.initXml = pkgs.buildPackages.runCommand "init.xml" {
nativeBuildInputs = with pkgs.buildPackages; [ dhall xorg.lndir ];
DHALL_GENODE = "${pkgs.genodePackages.dhallGenode}/binary.dhall";
INIT_CONFIG = config.genode.init.config;
} ''
export XDG_CACHE_HOME=$NIX_BUILD_TOP
lndir -silent \
${pkgs.genodePackages.dhallGenode}/.cache \
$XDG_CACHE_HOME
dhall text <<< "(env:DHALL_GENODE).Init.render (env:INIT_CONFIG)" > $out
'';
};
}