Dotfiles managed with Nix
feat: support host-based darwin and home-manager configs
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README.md
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README.md
···
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# Dotfiles
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- `flake.nix`: flake inputs and the exported `macos` configuration.
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- `macos.nix`: main macOS configuration, plus Homebrew settings.
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- `flake.nix`: flake inputs plus exported `darwinConfigurations` and Linux `homeConfigurations`.
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- `hosts.nix`: machine inventory keyed by the real hostname of each machine.
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- `auto-upgrade.nix`: scheduled `darwin-rebuild` runs plus Nix garbage collection.
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- `macos.nix`: macOS system settings managed by `nix-darwin`.
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- `home.nix`: shared Home Manager configuration plus small platform-specific conditionals.
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- `packages/shared.nix`: packages you want available everywhere.
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- `packages/macos.nix`: packages that only belong to this macOS setup.
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- `justfile`: shortcuts for `darwin-rebuild`.
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- `packages/macos.nix`: packages that only belong to the macOS setup.
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- `justfile`: shortcuts for `darwin-rebuild` and `home-manager`.
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`nix-darwin` stays for macOS because this repo manages system-level things there, such as Homebrew and launchd automation. Linux stays on standalone Home Manager.
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`hosts.nix` is the machine inventory for the whole flake. Each attribute name must match the real short hostname of that machine:
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- macOS: `scutil --get LocalHostName`
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- Linux: `hostname -s`
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Each host entry usually only needs:
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- `system`: Nix platform string such as `aarch64-darwin`, `x86_64-linux`, or `aarch64-linux`.
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- `username`: local user that Home Manager should manage.
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Optional overrides per host:
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- `homeDirectory`: defaults to `/Users/<username>` on macOS and `/home/<username>` on Linux.
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- `flakeDirectory`: defaults to `<homeDirectory>/.dot`.
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To add a new machine, copy an existing entry in `hosts.nix`, rename the key to the real hostname, set `system` and `username`, then add overrides only if that machine uses a non-standard home path or checkout location.
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Useful commands:
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- `just build`: detect the current machine and build its config.
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- `just switch`: detect the current machine and switch its config.
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- `just hm-build <target>`: build a specific Linux Home Manager target by hostname.
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- `just hm-switch <target>`: switch a specific Linux Home Manager target by hostname.
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Automatic upgrade logs live at `/var/log/darwin-auto-upgrade.log`.
+53
auto-upgrade.nix
+53
auto-upgrade.nix
···
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{ config, lib, pkgs, flakeDirectory, hostName, ... }:
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let
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flakeDir = flakeDirectory;
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flakeRef = "path:${flakeDir}#${hostName}";
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upgradeLogFile = "/var/log/darwin-auto-upgrade.log";
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upgradeScript = pkgs.writeShellScript "darwin-auto-upgrade" ''
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set -euo pipefail
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flake_dir=${lib.escapeShellArg flakeDir}
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flake_ref=${lib.escapeShellArg flakeRef}
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export HOME="/var/root"
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export GIT_CONFIG_COUNT=1
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export GIT_CONFIG_KEY_0="safe.directory"
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export GIT_CONFIG_VALUE_0="$flake_dir"
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${config.system.build.darwin-rebuild}/bin/darwin-rebuild switch \
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--flake "$flake_ref" \
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--print-build-logs
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'';
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in
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{
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launchd.daemons.darwin-auto-upgrade = {
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command = "${upgradeScript}";
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serviceConfig = {
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Label = "dev.vieitesss.darwin-auto-upgrade.${hostName}";
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LowPriorityIO = true;
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ProcessType = "Background";
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RunAtLoad = false;
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StartCalendarInterval = [
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{
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Hour = 2;
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Minute = 0;
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}
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];
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StandardOutPath = upgradeLogFile;
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StandardErrorPath = upgradeLogFile;
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};
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};
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nix.gc = {
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automatic = true;
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interval = [
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{
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Weekday = 7;
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Hour = 3;
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Minute = 15;
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}
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];
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options = "--delete-older-than 30d";
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};
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}
+21
flake.lock
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flake.lock
···
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"type": "github"
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}
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},
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"home-manager": {
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"inputs": {
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"nixpkgs": [
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"nixpkgs"
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]
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},
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"locked": {
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"lastModified": 1774539458,
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"narHash": "sha256-H9GIOqdMfQZ6lFetsQhO9TCq53hYzpTHDWOt3PRh9V0=",
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"owner": "nix-community",
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"repo": "home-manager",
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"rev": "e2e5f512b33ed19a7a3271d0b73ed5eefcc0be5f",
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"type": "github"
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},
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"original": {
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"owner": "nix-community",
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"repo": "home-manager",
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"type": "github"
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}
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},
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"neovim-nightly-overlay": {
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"inputs": {
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"flake-parts": "flake-parts",
···
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},
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"root": {
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"inputs": {
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"home-manager": "home-manager",
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"neovim-nightly-overlay": "neovim-nightly-overlay",
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"nix-darwin": "nix-darwin",
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"nixpkgs": "nixpkgs_2"
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-8
flake.nix
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flake.nix
···
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{
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description = "Personal nix-darwin system flake";
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description = "Personal cross-platform dotfiles flake";
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inputs = {
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nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
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nix-darwin.url = "github:nix-darwin/nix-darwin/master";
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nix-darwin.inputs.nixpkgs.follows = "nixpkgs";
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home-manager.url = "github:nix-community/home-manager";
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home-manager.inputs.nixpkgs.follows = "nixpkgs";
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neovim-nightly-overlay.url = "github:nix-community/neovim-nightly-overlay";
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};
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outputs = inputs@{ self, nix-darwin, ... }: {
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darwinConfigurations.macos = nix-darwin.lib.darwinSystem {
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specialArgs = { inherit inputs self; };
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modules = [
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./macos.nix
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];
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outputs = inputs@{ self, nixpkgs, nix-darwin, home-manager, ... }:
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let
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lib = nixpkgs.lib;
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isDarwin = host: lib.hasSuffix "darwin" host.system;
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mkHost = host:
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let
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homeDirectory = host.homeDirectory or (
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if isDarwin host then
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"/Users/${host.username}"
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else
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"/home/${host.username}"
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);
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in
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host // {
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inherit homeDirectory;
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flakeDirectory = host.flakeDirectory or "${homeDirectory}/.dot";
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};
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hosts = lib.mapAttrs (_: host: mkHost host) (import ./hosts.nix);
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mkPkgs = system: import nixpkgs {
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inherit system;
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config.allowUnfree = true;
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};
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mkHomeModule = host: {
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imports = [ ./home.nix ];
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home = {
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inherit (host) username homeDirectory;
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};
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};
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mkHome = _: host: home-manager.lib.homeManagerConfiguration {
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pkgs = mkPkgs host.system;
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extraSpecialArgs = {
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inherit inputs;
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};
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modules = [ (mkHomeModule host) ];
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};
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mkDarwin = hostName: host: nix-darwin.lib.darwinSystem {
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system = host.system;
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specialArgs = {
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inherit self hostName;
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inherit (host) flakeDirectory username homeDirectory;
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};
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modules = [
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./macos.nix
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home-manager.darwinModules.home-manager
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{
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home-manager.useGlobalPkgs = true;
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home-manager.useUserPackages = true;
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home-manager.extraSpecialArgs = {
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inherit inputs;
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};
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home-manager.users.${host.username} = mkHomeModule host;
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}
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];
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};
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in {
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darwinConfigurations = lib.mapAttrs mkDarwin (lib.filterAttrs (_: host: isDarwin host) hosts);
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homeConfigurations = lib.mapAttrs mkHome (lib.filterAttrs (_: host: !isDarwin host) hosts);
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};
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};
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}
+26
home.nix
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home.nix
···
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{ lib, pkgs, inputs, ... }:
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{
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home.packages =
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import ./packages/shared.nix {
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inherit pkgs inputs;
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}
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++ lib.optionals pkgs.stdenv.isDarwin (import ./packages/macos.nix {
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inherit pkgs;
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});
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targets.genericLinux.enable = pkgs.stdenv.isLinux;
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# This value determines the Home Manager release that your
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# configuration is compatible with. This helps avoid breakage
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# when a new Home Manager release introduces backwards
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# incompatible changes.
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#
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# You can update Home Manager without changing this value. See
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# the Home Manager release notes for a list of state version
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# changes in each release.
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home.stateVersion = "25.11";
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# Let Home Manager install and manage itself.
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programs.home-manager.enable = true;
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}
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hosts.nix
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hosts.nix
···
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{
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# Host entries are keyed by the machine's real short hostname.
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# - macOS: `scutil --get LocalHostName`
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# - Linux: `hostname -s`
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#
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# Each host usually only needs:
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# - `system`: Nix platform string such as `aarch64-darwin` or `x86_64-linux`
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# Get it on the target machine with:
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# `nix eval --impure --raw --expr builtins.currentSystem`
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# - `username`: local login user that Home Manager should manage
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#
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# Optional overrides:
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# - `homeDirectory`: defaults to `/Users/<username>` on macOS and `/home/<username>` on Linux
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# - `flakeDirectory`: defaults to `<homeDirectory>/.dot`
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MacBook-Air-de-Daniel = {
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system = "aarch64-darwin";
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username = "vieitesprefapp";
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};
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}
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justfile
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justfile
···
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host := "macos"
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current_host := `if [ "$(uname -s)" = "Darwin" ]; then scutil --get LocalHostName; else hostname -s; fi`
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current_flake := "path:.#{{current_host}}"
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alias drs := switch
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alias hms := hm-switch
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_default:
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just -l
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build:
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darwin-rebuild build --flake .#{{host}}
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printf 'Using host %s\n' "{{current_host}}"; if [ "$(uname -s)" = "Darwin" ]; then darwin-rebuild build --flake "{{current_flake}}"; else home-manager build --flake "{{current_flake}}"; fi
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switch:
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sudo darwin-rebuild switch --flake .#{{host}}
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printf 'Using host %s\n' "{{current_host}}"; if [ "$(uname -s)" = "Darwin" ]; then sudo darwin-rebuild switch --flake "{{current_flake}}"; else home-manager switch --flake "{{current_flake}}"; fi
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hm-build target:
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home-manager build --flake path:.#{{target}}
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hm-switch target:
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home-manager switch --flake path:.#{{target}}
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macos.nix
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macos.nix
···
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{ pkgs, inputs, self, ... }:
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let
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sharedPackages = import ./packages/shared.nix {
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inherit pkgs inputs;
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};
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{ self, username, homeDirectory, ... }:
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{
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imports = [ ./auto-upgrade.nix ];
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macosPackages = import ./packages/macos.nix {
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inherit pkgs;
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};
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in
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{
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nix.settings.experimental-features = "nix-command flakes";
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nixpkgs.hostPlatform = "aarch64-darwin";
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nixpkgs.config.allowUnfree = true;
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system.primaryUser = "vieitesprefapp";
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users.users.${username} = {
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name = username;
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home = homeDirectory;
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};
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system.primaryUser = username;
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system.stateVersion = 6;
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system.configurationRevision = self.rev or self.dirtyRev or null;
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environment.systemPackages = sharedPackages ++ macosPackages;
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homebrew = {
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enable = true;