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Single user installs have been unsupported by the official Nix installer since 2.4. |
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.github | ||
doc | ||
modules | ||
pkgs | ||
tests | ||
.gitignore | ||
CHANGELOG | ||
default.nix | ||
eval-config.nix | ||
flake.lock | ||
flake.nix | ||
LICENSE | ||
README.md | ||
release.nix |
nix-darwin
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, quite similar to NixOS.
Prerequisites
The only prerequisite is a Nix implementation, both Nix and Lix are supported.
As the official Nix installer does not include an automated uninstaller, and manual uninstallation on macOS is a complex process, we recommend using one of the following installers instead:
- The Nix installer from Determinate Systems is only recommended for use with flake-based setups. Make sure you use it without the
--determinate
flag. The--determinate
flag installs the Determinate Nix distribution which does not work out of the box with nix-darwin.
- The Lix installer supports both flake-based and channel-based setups.
Installing
If you wish to use nix-darwin with flakes, please refer to the flakes section.
nix-build https://github.com/LnL7/nix-darwin/archive/master.tar.gz -A installer
./result/bin/darwin-installer
Updating
The installer will configure a channel for this repository.
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
To run the latest version of the uninstaller, you can run the following command:
nix --extra-experimental-features "nix-command flakes" run nix-darwin#darwin-uninstaller
If that command doesn't work for you, you can try the locally installed uninstaller:
darwin-uninstaller
Example configuration
Configuration lives in ~/.nixpkgs/darwin-configuration.nix
. Check out
modules/examples for some example configurations.
{ 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
nix-darwin aims for both non-flake and flake configurations to be well supported despite flakes being an experimental feature in Nix.
Step 1. Creating flake.nix
Getting started from scratch
If you don't have an existing configuration.nix
, you can run the following commands to generate a basic flake.nix
inside ~/.config/nix-darwin
:
mkdir -p ~/.config/nix-darwin
cd ~/.config/nix-darwin
nix flake init -t nix-darwin
sed -i '' "s/simple/$(scutil --get LocalHostName)/" flake.nix
Make sure to change nixpkgs.hostPlatform
to aarch64-darwin
if you are using Apple Silicon.
Migrating from an existing configuration.nix
Add the following to flake.nix
in the same folder as configuration.nix
:
{
description = "John's darwin system";
inputs = {
nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-24.05-darwin";
nix-darwin.url = "github:LnL7/nix-darwin";
nix-darwin.inputs.nixpkgs.follows = "nixpkgs";
};
outputs = inputs@{ self, nix-darwin, nixpkgs }: {
darwinConfigurations."Johns-MacBook" = nix-darwin.lib.darwinSystem {
modules = [ ./configuration.nix ];
};
};
}
Make sure to replace Johns-MacBook
with your hostname which you can find by running scutil --get LocalHostName
.
Make sure to set nixpkgs.hostPlatform
in your configuration.nix
to either x86_64-darwin
(Intel) or aarch64-darwin
(Apple Silicon).
Step 2. Installing nix-darwin
Instead of using darwin-installer
, you can just run darwin-rebuild switch
to install nix-darwin. As darwin-rebuild
won't be installed in your PATH
yet, you can use the following command:
nix run nix-darwin -- switch --flake ~/.config/nix-darwin
Step 3. Using nix-darwin
After installing, you can run darwin-rebuild
to apply changes to your system:
darwin-rebuild switch --flake ~/.config/nix-darwin
Using flake inputs
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.
# in flake.nix
nix-darwin.lib.darwinSystem {
modules = [ ./configuration.nix ];
specialArgs = { inherit inputs; };
}
# in configuration.nix
{ pkgs, lib, inputs }:
# inputs.self, inputs.nix-darwin, and inputs.nixpkgs can be accessed here
Documentation
Reference documentation of all the options is available here.
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 nix.linux-builder.enable
Value:
true
Default:
false
Example:
true
Description:
Whether to enable Linux builder.
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:
# 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 macOS 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.
darwin-rebuild switch -I darwin=.
If you're adding a module, please add yourself to meta.maintainers
, for example
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
- @LnL7 on twitter