Hi,
I’m currently configure nix for my Mac. I’m using system packages install and homebrew, but I have an issue with the install ordering between system packages and homebrew packages.
I have this configuration and the system packages are installed after homebrew packages. I try to find how to change the ordering and have system packages in first.
{
description = "Personnal nix-darwin system flake";
inputs = {
nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
nix-darwin.url = "github:LnL7/nix-darwin/master";
nix-darwin.inputs.nixpkgs.follows = "nixpkgs";
nix-homebrew.url = "github:zhaofengli-wip/nix-homebrew";
};
outputs = inputs@{ self, nix-darwin, nixpkgs, nix-homebrew }:
let
xcode-installer = import ./xcode-installer.nix;
configuration = { pkgs, config, ... }: {
nixpkgs.config.allowUnfree = true;
nixpkgs.config.allowBroken = true;
environment.systemPackages = [
(xcode-installer { inherit pkgs; })
pkgs.mkalias
pkgs.neovim
pkgs.vscode
pkgs.go
pkgs.golangci-lint
pkgs.terraform
pkgs.terraform-docs
pkgs.git
pkgs.eza
pkgs.awscli
pkgs.podman-desktop
pkgs.discord
pkgs.ollama
];
system.activationScripts = {
prerequisites.text = ''
echo "Installation de Xcode Command Line Tools..."
${xcode-installer { inherit pkgs; }}/bin/install-xcode
'';
applications.text = let
env = pkgs.buildEnv {
name = "system-applications";
paths = config.environment.systemPackages;
pathsToLink = "/Applications";
};
in
pkgs.lib.mkForce ''
echo "setting up /Applications..." >&2
rm -rf /Applications/Nix\ Apps
mkdir -p /Applications/Nix\ Apps
find ${env}/Applications -maxdepth 1 -type l -exec readlink '{}' + |
while read -r src; do
app_name=$(basename "$src")
echo "copying $src" >&2
${pkgs.mkalias}/bin/mkalias "$src" "/Applications/Nix Apps/$app_name"
done
'';
};
homebrew = {
enable = true;
casks = [
"vlc"
"ghostty"
"spotify"
"proton-drive"
"bambu-studio"
"parsec"
];
onActivation = {
autoUpdate = true;
cleanup = "zap";
upgrade = true;
};
};
nix.settings.experimental-features = "nix-command flakes";
programs.zsh.enable = true;
system.configurationRevision = self.rev or self.dirtyRev or null;
services.nix-daemon.enable = true;
system.stateVersion = 6;
nixpkgs.hostPlatform = "aarch64-darwin";
};
in
{
darwinConfigurations."simple" = nix-darwin.lib.darwinSystem {
modules = [
configuration
nix-homebrew.darwinModules.nix-homebrew
{
nix-homebrew = {
enable = true;
enableRosetta = true;
user = "jerem";
autoMigrate = true;
};
}
];
};
};
}
If you have an idea to change the ordering 
.
Thanks