mirror of
https://github.com/nix-community/home-manager
synced 2024-11-14 23:29:46 +01:00
241 lines
7 KiB
Text
241 lines
7 KiB
Text
[[ch-nix-flakes]]
|
||
== Nix Flakes
|
||
|
||
:nixos-wiki-flakes: https://nixos.wiki/wiki/Flakes
|
||
|
||
Home Manager includes a `flake.nix` file for compatibility with {nixos-wiki-flakes}[Nix Flakes].
|
||
The support is still experimental and may change in backwards incompatible ways.
|
||
|
||
[[sec-flakes-prerequisties]]
|
||
=== Prerequisites
|
||
|
||
* Install Nix 2.4 or later, or have it in `nix-shell`.
|
||
|
||
* Enable experimental features `nix-command` and `flakes`.
|
||
+
|
||
** When using NixOS, add the following to your `configuration.nix` and rebuild your system.
|
||
+
|
||
[source,nix]
|
||
nix = {
|
||
package = pkgs.nixFlakes;
|
||
extraOptions = ''
|
||
experimental-features = nix-command flakes
|
||
'';
|
||
};
|
||
+
|
||
** If you are not using NixOS, add the following to `nix.conf` (located at `~/.config/nix/` or `/etc/nix/nix.conf`).
|
||
+
|
||
[source,bash]
|
||
experimental-features = nix-command flakes
|
||
+
|
||
You may need to restart the Nix daemon with, for example, `sudo systemctl restart nix-daemon.service`.
|
||
+
|
||
** Alternatively, you can enable flakes on a per-command basis with the following additional flags to `nix` and `home-manager`:
|
||
+
|
||
[source,console]
|
||
----
|
||
$ nix --extra-experimental-features "nix-command flakes" <sub-commands>
|
||
$ home-manager --extra-experimental-features "nix-command flakes" <sub-commands>
|
||
----
|
||
|
||
* Prepare your Home Manager configuration (`home.nix`).
|
||
+
|
||
Unlike the channel-based setup,
|
||
`home.nix` will be evaluated when the flake is built,
|
||
so it must be present before bootstrap of Home Manager from the flake.
|
||
See <<sec-usage-configuration>> for introduction about
|
||
writing a Home Manager configuration.
|
||
|
||
[[sec-flakes-standalone]]
|
||
=== Standalone setup
|
||
|
||
1. Set up a flake with a `flake.nix` as follows:
|
||
+
|
||
[source,nix]
|
||
----
|
||
{
|
||
description = "Home Manager configuration of Jane Doe";
|
||
|
||
inputs = {
|
||
# Specify the source of Home Manager and Nixpkgs.
|
||
nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
|
||
home-manager = {
|
||
url = "github:nix-community/home-manager";
|
||
inputs.nixpkgs.follows = "nixpkgs";
|
||
};
|
||
};
|
||
|
||
outputs = { nixpkgs, home-manager, ... }:
|
||
let
|
||
system = "x86_64-linux";
|
||
pkgs = nixpkgs.legacyPackages.${system};
|
||
in {
|
||
homeConfigurations.jdoe = home-manager.lib.homeManagerConfiguration {
|
||
inherit pkgs;
|
||
|
||
# Specify your home configuration modules here, for example,
|
||
# the path to your home.nix.
|
||
modules = [
|
||
./home.nix
|
||
];
|
||
|
||
# Optionally use extraSpecialArgs
|
||
# to pass through arguments to home.nix
|
||
};
|
||
};
|
||
}
|
||
----
|
||
+
|
||
[NOTE]
|
||
====
|
||
* The above example tracks the master branch of Home Manager
|
||
and nixos-unstable branch of Nixpkgs.
|
||
If you would like to use the `release-22.11` branch,
|
||
change the `home-manager` input url to `github:nix-community/home-manager/release-22.11`
|
||
and `nixpkgs` url to `github:NixOS/nixpkgs/nixos-22.11`.
|
||
|
||
* The Home Manager library is exported by the flake under
|
||
`lib.hm`.
|
||
|
||
* You can use the above `flake.nix` as a template in `~/.config/nixpkgs` by
|
||
[source,console]
|
||
$ nix flake new ~/.config/nixpkgs -t github:nix-community/home-manager
|
||
====
|
||
|
||
2. Install Home Manager and apply the configuration by
|
||
+
|
||
[source,console]
|
||
----
|
||
$ nix build --no-link <flake-uri>#homeConfigurations.jdoe.activationPackage
|
||
$ "$(nix path-info <flake-uri>#homeConfigurations.jdoe.activationPackage)"/activate
|
||
----
|
||
+
|
||
Substitute `<flake-uri>` with the flake URI of the configuration flake.
|
||
If `flake.nix` resides in `~/.config/nixpkgs`,
|
||
`<flake-uri>` may be `~/.config/nixpkgs`
|
||
as a Git tree or `path:~/.config/nixpkgs` if not.
|
||
|
||
3. Since the release `21.05`,
|
||
building a flake-based configuration is as simple as
|
||
+
|
||
[source,console]
|
||
$ home-manager switch --flake '<flake-uri>#jdoe'
|
||
+
|
||
once home-manager is installed.
|
||
+
|
||
Here, `jdoe` is a configuration specified in the flake file,
|
||
and `<flake-uri>#jdoe` will be expanded to
|
||
`<flake-uri>#homeConfigurations.jdoe.activationPackage`
|
||
and be built by Nix.
|
||
|
||
[NOTE]
|
||
====
|
||
The flake inputs are not upgraded automatically when switching.
|
||
The analogy to the command `home-manager --update ...` is `nix flake update`.
|
||
|
||
If updating more than one input is undesirable,
|
||
the command `nix flake lock --update-input <input-name>` can be used.
|
||
|
||
You can also pass flake-related options
|
||
such as `--recreate-lock-file` or `--update-input [input]`
|
||
to `home-manager` when building/switching,
|
||
and these options will be forwarded to `nix build`.
|
||
See the {nixos-wiki-flakes}[NixOS Wiki page] for detail.
|
||
====
|
||
|
||
[[sec-flakes-nixos-module]]
|
||
=== NixOS module
|
||
|
||
To use Home Manager as a NixOS module,
|
||
a bare-minimum `flake.nix` would be as follows:
|
||
|
||
[source,nix]
|
||
----
|
||
{
|
||
description = "NixOS configuration";
|
||
|
||
inputs = {
|
||
nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
|
||
home-manager.url = "github:nix-community/home-manager";
|
||
home-manager.inputs.nixpkgs.follows = "nixpkgs";
|
||
};
|
||
|
||
outputs = inputs@{ nixpkgs, home-manager, ... }: {
|
||
nixosConfigurations = {
|
||
hostname = nixpkgs.lib.nixosSystem {
|
||
system = "x86_64-linux";
|
||
modules = [
|
||
./configuration.nix
|
||
home-manager.nixosModules.home-manager
|
||
{
|
||
home-manager.useGlobalPkgs = true;
|
||
home-manager.useUserPackages = true;
|
||
home-manager.users.jdoe = import ./home.nix;
|
||
|
||
# Optionally, use home-manager.extraSpecialArgs to pass
|
||
# arguments to home.nix
|
||
}
|
||
];
|
||
};
|
||
};
|
||
};
|
||
}
|
||
----
|
||
|
||
The Home Manager configuration is then part of the NixOS configuration
|
||
and is automatically rebuilt with the system when using the appropriate command
|
||
for the system, such as `nixos-rebuild switch --flake <flake-uri>`.
|
||
|
||
You can use the above `flake.nix` as a template in `/etc/nixos` by
|
||
|
||
[source,console]
|
||
$ nix flake new /etc/nixos -t github:nix-community/home-manager#nixos
|
||
|
||
[[sec-flakes-nix-darwin-module]]
|
||
=== nix-darwin module
|
||
|
||
The flake-based setup of the Home Manager nix-darwin module
|
||
is similar to that of NixOS. The `flake.nix` would be:
|
||
|
||
[source,nix]
|
||
----
|
||
{
|
||
description = "Darwin configuration";
|
||
|
||
inputs = {
|
||
nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
|
||
darwin.url = "github:lnl7/nix-darwin";
|
||
darwin.inputs.nixpkgs.follows = "nixpkgs";
|
||
home-manager.url = "github:nix-community/home-manager";
|
||
home-manager.inputs.nixpkgs.follows = "nixpkgs";
|
||
};
|
||
|
||
outputs = inputs@{ nixpkgs, home-manager, darwin, ... }: {
|
||
darwinConfigurations = {
|
||
hostname = darwin.lib.darwinSystem {
|
||
system = "x86_64-darwin";
|
||
modules = [
|
||
./configuration.nix
|
||
home-manager.darwinModules.home-manager
|
||
{
|
||
home-manager.useGlobalPkgs = true;
|
||
home-manager.useUserPackages = true;
|
||
home-manager.users.jdoe = import ./home.nix;
|
||
|
||
# Optionally, use home-manager.extraSpecialArgs to pass
|
||
# arguments to home.nix
|
||
}
|
||
];
|
||
};
|
||
};
|
||
};
|
||
}
|
||
----
|
||
|
||
and it is also rebuilt with the nix-darwin generations.
|
||
The rebuild command here may be `darwin-rebuild switch --flake <flake-uri>`.
|
||
|
||
You can use the above `flake.nix` as a template in `~/.config/darwin` by
|
||
|
||
[source,console]
|
||
$ nix flake new ~/.config/darwin -t github:nix-community/home-manager#nix-darwin
|