[logo](https://github.com/LnL7/nix-darwin) # nix-darwin ![Test](https://github.com/LnL7/nix-darwin/workflows/Test/badge.svg) Nix modules for darwin, `/etc/nixos/configuration.nix` for macOS. This project aims to bring the convenience of a declarative system approach to macOS. Nix-darwin is built up around [Nixpkgs](https://github.com/NixOS/nixpkgs), quite similar to [NixOS](https://nixos.org/). ## Install To install nix-darwin, a working installation of [Nix](https://github.com/NixOS/nix#installation) is required. ```bash nix-build https://github.com/LnL7/nix-darwin/archive/master.tar.gz -A installer ./result/bin/darwin-installer ``` > NOTE: the system activation scripts don't overwrite existing etc files, so files like `/etc/bashrc` and `/etc/zshrc` won't be > updated by default. If you didn't use the installer or skipped some of the options you'll have to take care of this yourself. > Either modify the existing file to source/import the one from `/etc/static` or remove it. Some examples: - `mv /etc/bashrc /etc/bashrc.orig` - `echo 'if test -e /etc/static/bashrc; then . /etc/static/bashrc; fi' | sudo tee -a /etc/bashrc` - `echo 'if test -e /etc/static/bashrc; then . /etc/static/bashrc; fi' | tee -a ~/.bashrc` ## Updating The installer will configure a channel for this repository. ```bash nix-channel --update darwin darwin-rebuild changelog ``` > NOTE: If you are using Nix as a daemon service the channel for that will be owned by root. > Use `sudo -i nix-channel --update darwin` instead. ## Uninstalling There's also an uninstaller if you don't like the project and want to remove the configured files and services. ```bash nix-build https://github.com/LnL7/nix-darwin/archive/master.tar.gz -A uninstaller ./result/bin/darwin-uninstaller ``` ## Example configuration Configuration lives in `~/.nixpkgs/darwin-configuration.nix`. Check out [modules/examples](https://github.com/LnL7/nix-darwin/tree/master/modules/examples) for some example configurations. ```nix { pkgs, ... }: { # List packages installed in system profile. To search by name, run: # $ nix-env -qaP | grep wget environment.systemPackages = [ pkgs.vim ]; # Auto upgrade nix package and the daemon service. services.nix-daemon.enable = true; nix.package = pkgs.nix; } ``` ## Flakes (experimental) There is also preliminary support for building your configuration using a [flake](https://nixos.wiki/wiki/Flakes). This is mostly based on the flake support that was added to NixOS. A minimal example of using an existing configuration.nix: ```nix { description = "John's darwin system"; inputs = { nixpkgs.url = "github:nixos/nixpkgs/nixpkgs-23.05-darwin"; darwin.url = "github:lnl7/nix-darwin/master"; darwin.inputs.nixpkgs.follows = "nixpkgs"; }; outputs = inputs@{ self, darwin, nixpkgs }: { darwinConfigurations."Johns-MacBook" = darwin.lib.darwinSystem { modules = [ ./configuration.nix ]; }; }; } ``` Inputs from the flake can also be passed into `darwinSystem`. These inputs are then accessible as an argument `inputs`, similar to `pkgs` and `lib`, inside the configuration. ```nix # in flake.nix darwin.lib.darwinSystem { modules = [ ./configuration.nix ]; specialArgs = { inherit inputs; }; } ``` ```nix # in configuration.nix { pkgs, lib, inputs }: # inputs.self, inputs.darwin, and inputs.nixpkgs can be accessed here ``` Since the installer doesn't work with flakes out of the box yet, nix-darwin will need to be bootstrapped using the installer or manually. Afterwards the flake based configuration can be built. The `hostname(1)` of your system will be used to decide which darwin configuration is applied if it's not specified explicitly in the flake ref. ```sh nix build ~/.config/darwin\#darwinConfigurations.Johns-MacBook.system ./result/sw/bin/darwin-rebuild switch --flake ~/.config/darwin ``` ## Manual Install ```bash # Configure the channel nix-channel --add https://github.com/LnL7/nix-darwin/archive/master.tar.gz darwin nix-channel --update export NIX_PATH=darwin-config=$HOME/.nixpkgs/darwin-configuration.nix:$HOME/.nix-defexpr/channels:$NIX_PATH # Or use a local git repository git clone git@github.com:LnL7/nix-darwin.git ~/.nix-defexpr/darwin export NIX_PATH=darwin=$HOME/.nix-defexpr/darwin:darwin-config=$HOME/.nixpkgs/darwin-configuration.nix:$NIX_PATH cp ~/.nix-defexpr/darwin/modules/examples/simple.nix ~/.nixpkgs/darwin-configuration.nix # you can also use this to rebootstrap nix-darwin in case # darwin-rebuild is to old to activate the system. $(nix-build '' -A system --no-out-link)/sw/bin/darwin-rebuild build $(nix-build '' -A system --no-out-link)/sw/bin/darwin-rebuild switch . /etc/static/bashrc ``` ... or for `fish`: ```fish (nix-build '' -A system --no-out-link)/sw/bin/darwin-rebuild build (nix-build '' -A system --no-out-link)/sw/bin/darwin-rebuild switch ``` This will create and manage a system profile in `/run/current-system`, just like nixos. The default `NIX_PATH` in nix-darwin will look for this repository in `~/.nix-defexpr/darwin` and for your configuration in `~/.nixpkgs/darwin-configuration.nix`. If you want to change these you can set your own with `nix.nixPath = [ ];`. ``` $ darwin-rebuild switch building the system configuration... these derivations will be built: /nix/store/vfad6xgjzr56jcs051cg6vzch4dby92y-etc-zprofile.drv /nix/store/cbmkscxsz0k02ynaph5xaxm1aql0p3vq-etc.drv /nix/store/r5fpn177jhc16f8iyzk12gcw4pivzpbw-nixdarwin-system-16.09.drv building path(s) ‘/nix/store/wlq89shja597ip7mrmjv7yzk2lwyh8n0-etc-zprofile’ building path(s) ‘/nix/store/m8kcm1pa5j570h3indp71a439wsh9lzq-etc’ building path(s) ‘/nix/store/l735ffcdvcvy60i8pqf6v00vx7lnm6mz-nixdarwin-system-16.09’ setting up /etc... setting up launchd services... writing defaults... $ ``` ## Documentation Reference documentation of all the options is available [here](https://daiderd.com/nix-darwin/manual/index.html). This can also be accessed locally using `man 5 configuration.nix`. `darwin-help` will open a HTML version of the manpage in the default browser. Furthermore there's `darwin-option` to introspect the settings of a system and its available options. > NOTE: `darwin-option` is only available to non-flake installations. ``` $ darwin-option services.activate-system.enable Value: true Default: false Example: no example Description: Whether to activate system at boot time. ``` There's also a small wiki https://github.com/LnL7/nix-darwin/wiki about specific topics, like macOS upgrades. ## Tests There are basic tests that run sanity checks for some of the modules, you can run them like this: ```bash # run all tests nix-build release.nix -A tests # or just a subset nix-build release.nix -A tests.environment-path ``` ## Contributing Let's make nix on darwin awesome! Don't hesitate to contribute modules or open an issue. To build your configuration with local changes you can run this. This flag can also be used to override darwin-config or nixpkgs, for more information on the `-I` flag look at the nix-build [manpage](https://nixos.org/manual/nix/stable/command-ref/nix-build.html). ```bash darwin-rebuild switch -I darwin=. ``` If you're adding a module, please add yourself to `meta.maintainers`, for example ```nix meta.maintainers = [ lib.maintainers.alice or "alice" ]; options.services.alicebot = # ... ``` The `or` operator takes care of graceful degradation when `lib` from Nixpkgs goes out of sync. Also feel free to contact me if you have questions, - Matrix - @daiderd:matrix.org, you can find me in [#macos:nixos.org](https://matrix.to/#/#macos:nixos.org) - @lnl7 on twitter