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{environment,readme}: default configuration path to /etc/nix-darwin

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This commit is contained in:
Emily 2025-01-13 23:21:04 +00:00
parent 5bc4677c03
commit 2733527a58
10 changed files with 61 additions and 40 deletions
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41
.github/workflows/test.yml vendored
View file

@ -43,13 +43,11 @@ jobs:
nix-channel --update
- name: Install nix-darwin
run: |
export NIX_PATH=$HOME/.nix-defexpr/channels
mkdir -p ~/.config/nix-darwin
cp modules/examples/simple.nix ~/.config/nix-darwin/configuration.nix
sudo mkdir -p /etc/nix-darwin
sudo cp modules/examples/simple.nix /etc/nix-darwin/configuration.nix
nixConfHash=$(shasum -a 256 /etc/nix/nix.conf | cut -d ' ' -f 1)
/usr/bin/sed -i.bak \
sudo /usr/bin/sed -i.bak \
"s/# programs.fish.enable = true;/ \
imports = [ \
({ options, ... }: { \
@ -61,19 +59,18 @@ jobs:
}) \
]; \
/" \
~/.config/nix-darwin/configuration.nix
/etc/nix-darwin/configuration.nix
nix run .#darwin-rebuild \
-- switch \
nix run .#darwin-rebuild -- switch \
-I darwin=. \
-I darwin-config=$HOME/.config/nix-darwin/configuration.nix
-I darwin-config=/etc/nix-darwin/configuration.nix
- name: Switch to new configuration
run: |
. /etc/bashrc
/usr/bin/sed -i.bak \
sudo /usr/bin/sed -i.bak \
"s/pkgs.vim/pkgs.hello/" \
~/.config/nix-darwin/configuration.nix
/etc/nix-darwin/configuration.nix
darwin-rebuild switch
@ -100,31 +97,33 @@ jobs:
install_url: https://releases.nixos.org/nix/nix-${{ env.NIX_VERSION }}/install
- name: Install nix-darwin
run: |
mkdir -p ~/.config/nix-darwin
sudo mkdir -p /etc/nix-darwin
darwin=$(pwd)
pushd ~/.config/nix-darwin
nix flake init -t $darwin
pushd /etc/nix-darwin
sudo nix flake init -t $darwin
nixConfHash=$(shasum -a 256 /etc/nix/nix.conf | cut -d ' ' -f 1)
/usr/bin/sed -i.bak \
sudo /usr/bin/sed -i.bak \
"s/# programs.fish.enable = true;/nix.settings.access-tokens = [ \"github.com=\${{ secrets.GITHUB_TOKEN }}\" ]; environment.etc.\"nix\/nix.conf\".knownSha256Hashes = [ \"$nixConfHash\" ];/" \
flake.nix
/usr/bin/sed -i.bak \
sudo /usr/bin/sed -i.bak \
's/darwinConfigurations."simple"/darwinConfigurations."'$(scutil --get LocalHostName)'"/g' \
flake.nix
sudo /usr/bin/sed -i.bak \
's/nixpkgs.hostPlatform = "aarch64-darwin";/nixpkgs.hostPlatform = "'$(nix eval --expr builtins.currentSystem --impure --raw)'";/' \
flake.nix
popd
nix run .#darwin-rebuild -- \
switch --flake ~/.config/nix-darwin#simple \
nix run .#darwin-rebuild -- switch \
--override-input nix-darwin . \
--override-input nixpkgs nixpkgs/${{ env.NIXPKGS_BRANCH }}
- name: Switch to new configuration
run: |
. /etc/bashrc
/usr/bin/sed -i.bak \
sudo /usr/bin/sed -i.bak \
"s/pkgs.vim/pkgs.hello/" \
~/.config/nix-darwin/flake.nix
/etc/nix-darwin/flake.nix
darwin-rebuild switch --flake ~/.config/nix-darwin#simple \
darwin-rebuild switch \
--override-input nix-darwin . \
--override-input nixpkgs nixpkgs/${{ env.NIXPKGS_BRANCH }}

8
CHANGELOG
View file

@ -1,3 +1,11 @@
2025-01-18
- The default configuration path for all new installations
is `/etc/nix-darwin`. This was already the undocumented
default for `darwin-rebuild switch` when using flakes. This
is implemented by setting `environment.darwinConfig` to
`"/etc/nix-darwin/configuration.nix"` by default when
`system.stateVersion` ≥ 6.
2024-09-10
- The default Nix build user group ID is now set to 350 when
`system.stateVersion` ≥ 5, to reflect the default for new Nix

15
README.md
View file

@ -33,11 +33,12 @@ Despite being an experimental feature in Nix currently, nix-darwin recommends th
<summary>Getting started from scratch</summary>
<p></p>
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`:
If you don't have an existing `configuration.nix`, you can run the following commands to generate a basic `flake.nix` inside `/etc/nix-darwin`:
```bash
mkdir -p ~/.config/nix-darwin
cd ~/.config/nix-darwin
sudo mkdir -p /etc/nix-darwin
sudo chown $(id -nu):$(id -ng) /etc/nix-darwin
cd /etc/nix-darwin
# To use Nixpkgs unstable:
nix flake init -t nix-darwin/master
@ -88,7 +89,7 @@ Make sure to set `nixpkgs.hostPlatform` in your `configuration.nix` to either `x
Unlike NixOS, `nix-darwin` does not have an 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:
```bash
nix run nix-darwin -- switch --flake ~/.config/nix-darwin
nix run nix-darwin -- switch
```
### Step 3. Using `nix-darwin`
@ -96,7 +97,7 @@ nix run nix-darwin -- switch --flake ~/.config/nix-darwin
After installing, you can run `darwin-rebuild` to apply changes to your system:
```bash
darwin-rebuild switch --flake ~/.config/nix-darwin
darwin-rebuild switch
```
#### Using flake inputs
@ -124,7 +125,7 @@ nix-darwin.lib.darwinSystem {
### Step 1. Creating `configuration.nix`
Copy the [simple](./modules/examples/simple.nix) example to `~/.config/nix-darwin/configuration.nix`.
Copy the [simple](./modules/examples/simple.nix) example to `/etc/nix-darwin/configuration.nix`.
### Step 2. Adding `nix-darwin` channel
@ -143,7 +144,7 @@ To install `nix-darwin`, you can just run `darwin-rebuild switch` to install nix
```bash
nix-build '<darwin>' -A darwin-rebuild
./result/bin/darwin-rebuild switch -I darwin-config=$HOME/.config/nix-darwin/configuration.nix
./result/bin/darwin-rebuild switch -I darwin-config=/etc/nix-darwin/configuration.nix
```
### Step 4. Using `nix-darwin`

20
modules/environment/default.nix
View file

@ -67,8 +67,24 @@ in
};
environment.darwinConfig = mkOption {
type = types.either types.path types.str;
default = "$HOME/.nixpkgs/darwin-configuration.nix";
type = types.nullOr (types.either types.path types.str);
default =
if config.nixpkgs.flake.setNixPath then
# Don’t set this for flake‐based systems.
null
else if config.system.stateVersion >= 6 then
"/etc/nix-darwin/configuration.nix"
else
"$HOME/.nixpkgs/darwin-configuration.nix";
defaultText = literalExpression ''
if config.nixpkgs.flake.setNixPath then
# Don’t set this for flake‐based systems.
null
else if config.system.stateVersion >= 6 then
"/etc/nix-darwin/configuration.nix"
else
"$HOME/.nixpkgs/darwin-configuration.nix"
'';
description = ''
The path of the darwin configuration.nix used to configure the system,
this updates the default darwin-config entry in NIX_PATH. Since this

2
modules/examples/flake/flake.nix
View file

@ -27,7 +27,7 @@
# Used for backwards compatibility, please read the changelog before changing.
# $ darwin-rebuild changelog
system.stateVersion = 5;
system.stateVersion = 6;
# The platform the configuration will be used on.
nixpkgs.hostPlatform = "aarch64-darwin";

2
modules/examples/hydra.nix
View file

@ -43,5 +43,5 @@ in
echo "ok"
'';
system.stateVersion = 5;
system.stateVersion = 6;
}

4
modules/examples/lnl.nix
View file

@ -199,7 +199,7 @@
programs.zsh.enableFzfGit = true;
programs.zsh.enableFzfHistory = true;
programs.zsh.variables.cfg = "$HOME/.config/nixpkgs/darwin/configuration.nix";
programs.zsh.variables.cfg = "/etc/nix-darwin/configuration.nix";
programs.zsh.variables.darwin = "$HOME/.nix-defexpr/darwin";
programs.zsh.variables.nixpkgs = "$HOME/.nix-defexpr/nixpkgs";
@ -322,5 +322,5 @@
nix.configureBuildUsers = true;
nix.nrBuildUsers = 32;
system.stateVersion = 5;
system.stateVersion = 6;
}

5
modules/examples/simple.nix
View file

@ -7,13 +7,10 @@
[ pkgs.vim
];
# Use custom location for configuration.nix.
environment.darwinConfig = "$HOME/.config/nix-darwin/configuration.nix";
# Enable alternative shell support in nix-darwin.
# programs.fish.enable = true;
# Used for backwards compatibility, please read the changelog before changing.
# $ darwin-rebuild changelog
system.stateVersion = 5;
system.stateVersion = 6;
}

2
modules/system/checks.nix
View file

@ -193,7 +193,7 @@ let
darwinConfig=$(NIX_PATH=$nixPath nix-instantiate --find-file darwin-config) || true
if ! test -e "$darwinConfig"; then
echo "error: Changed <darwin-config> but target does not exist, aborting activation" >&2
echo "Create ''${darwinConfig:-~/.nixpkgs/darwin-configuration.nix} or set environment.darwinConfig:" >&2
echo "Create ''${darwinConfig:-/etc/nix-darwin/configuration.nix} or set environment.darwinConfig:" >&2
echo >&2
echo " environment.darwinConfig = \"$(nix-instantiate --find-file darwin-config 2> /dev/null || echo '***')\";" >&2
echo >&2

2
modules/system/version.nix
View file

@ -51,7 +51,7 @@ in
system.maxStateVersion = mkOption {
internal = true;
type = types.int;
default = 5;
default = 6;
};
system.darwinLabel = mkOption {