infra/modules/nixos/auxolotl/nix/default.nix
2024-05-06 20:36:54 -07:00

95 lines
2.3 KiB
Nix

{
options,
config,
pkgs,
lib,
inputs,
...
}: let
cfg = config.auxolotl.nix;
substituters-submodule = lib.types.submodule ({name, ...}: {
options = {
key = lib.mkOption {
type = lib.types.nullOr lib.types.str;
default = null;
description = "The trusted public key for this substituter.";
};
};
});
in {
options.auxolotl.nix = {
enable = lib.mkEnableOption "Nix configuration";
package = lib.mkOption {
type = lib.types.package;
default = pkgs.nix;
defaultText = "pkgs.nix";
description = "Which Nix package to use.";
};
default-substituter = {
url = lib.mkOption {
type = lib.types.str;
default = "https://cache.nixos.org";
description = "The url for the substituter.";
};
key = lib.mkOption {
type = lib.types.str;
default = "cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY=";
description = "The trusted public key for the substituter.";
};
};
extra-substituters = lib.mkOption {
type = lib.types.attrsOf substituters-submodule;
default = {};
description = "Extra substituters to configure.";
};
};
config = lib.mkIf cfg.enable {
assertions =
lib.mapAttrsToList
(name: value: {
assertion = value.key != null;
message = "auxolotl.nix.extra-substituters.${name}.key must be set";
})
cfg.extra-substituters;
nix = let
users = ["root"];
in {
package = cfg.package;
settings = {
experimental-features = "nix-command flakes";
http-connections = 50;
log-lines = 50;
auto-optimise-store = true;
trusted-users = users;
allowed-users = users;
substituters =
[cfg.default-substituter.url]
++ (lib.mapAttrsToList (name: value: name) cfg.extra-substituters);
trusted-public-keys =
[cfg.default-substituter.key]
++ (lib.mapAttrsToList (name: value: value.key) cfg.extra-substituters);
};
gc = {
automatic = true;
dates = "weekly";
options = "--delete-older-than 30d";
};
# flake-utils-plus
generateRegistryFromInputs = true;
generateNixPathFromInputs = true;
linkInputs = true;
};
};
}