94 lines
2.4 KiB
Nix
94 lines
2.4 KiB
Nix
# Core Nix configuration
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{
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config,
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lib,
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inputs,
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...
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}:
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let
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cfg = config.aux.system;
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in
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{
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options = {
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aux.system.allowUnfree = lib.mkEnableOption (lib.mdDoc "Allow unfree packages to install.");
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aux.system.retentionPeriod = lib.mkOption {
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description = "How long to retain NixOS generations. Defaults to one month.";
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type = lib.types.str;
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default = "monthly";
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};
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};
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config = {
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nixpkgs.config.allowUnfree = cfg.allowUnfree;
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nix = {
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settings = {
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# Enable Flakes
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experimental-features = [
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"nix-command"
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"flakes"
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];
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# Use Lix instead of Nix
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substituters = [ "https://cache.lix.systems" ];
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trusted-public-keys = [ "cache.lix.systems:aBnZUw8zA7H35Cz2RyKFVs3H4PlGTLawyY5KRbvJR8o=" ];
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# Only allow these users to use Nix
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allowed-users = [
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"root"
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config.users.users.aires.name
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];
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# Avoid signature verification messages when doing remote builds
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trusted-users = [
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config.users.users.aires.name
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] ++ lib.optionals (config.aux.system.users.gremlin.enable) [ config.users.users.gremlin.name ];
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};
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# Enable periodic nix store optimization
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optimise = {
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automatic = true;
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dates = [ "daily" ];
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};
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# Enable garbage collection
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gc = {
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automatic = true;
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dates = "weekly";
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options = "--delete-older-than ${cfg.retentionPeriod}";
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persistent = true;
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randomizedDelaySec = "1hour";
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};
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# Configure NixOS to use the same software channel as Flakes
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registry.nixpkgs.flake = inputs.nixpkgs;
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nixPath = [ "nixpkgs=${inputs.nixpkgs}" ];
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# Configure remote build machines
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# To enable remote builds for a specific host, add `nix.distributedBuilds = true;` to its config
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buildMachines = [
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{
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hostName = "dimaga";
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systems = [
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"x86_64-linux"
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"aarch64-linux"
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];
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protocol = "ssh-ng";
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supportedFeatures = [
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"nixos-test"
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"kvm"
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"benchmark"
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"big-parallel"
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];
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}
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];
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# When using a builder, use its package store
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extraOptions = ''
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builders-use-substitutes = true
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'';
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};
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# Support for standard, dynamically-linked executables
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programs.nix-ld.enable = true;
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};
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}
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