config/lib/mkSystem.nix

115 lines
3 KiB
Nix

# This function creates a NixOS system based on our VM setup for a
# particular architecture.
{
nixpkgs,
overlays,
inputs,
}: name: {
userSettings,
system,
configDir, # base host config
extraModules ? [],
}: let
darwin = nixpkgs.lib.strings.hasSuffix "-darwin" system;
nixindex =
if darwin
then inputs.nix-index-database.darwinModules.nix-index
else inputs.nix-index-database.nixosModules.nix-index;
stylix =
if darwin
then inputs.stylix.darwinModules.stylix
else inputs.stylix.nixosModules.stylix;
systemModuleDir =
if darwin
then "macos"
else "nixos";
# NixOS vs nix-darwin functions
systemFunc =
if darwin
then inputs.darwin.lib.darwinSystem
else nixpkgs.lib.nixosSystem;
# The config files for this system.
hostConfig = configDir + "/configuration.nix";
homeConfig = configDir + "/home.nix";
hmModules =
if darwin
then inputs.home-manager.darwinModules
else inputs.home-manager.nixosModules;
systemSettings = rec {
inherit darwin;
homeDir =
if darwin
then "/Users/" + userSettings.username + "/"
else "/home/" + userSettings.username + "/";
};
in
systemFunc {
inherit system;
# TODO: gross and ugly hack do NOT like
specialArgs = {
inherit (userSettings) darwinTiling;
};
modules =
[
# Apply our overlays. Overlays are keyed by system type so we have
# to go through and apply our system type. We do this first so
# the overlays are available globally.
{nixpkgs.overlays = overlays;}
# Shared modules
../modules/shared
# System specific modules
../modules/${systemModuleDir}
# Link to configuration.nix
hostConfig
# Set up nix-index and enable comma for easy one-shot command use
# https://github.com/nix-community/comma
nixindex
{programs.nix-index-database.comma.enable = true;}
# Themes for all programs
stylix
hmModules.home-manager
{
home-manager = {
useGlobalPkgs = true;
useUserPackages = true;
backupFileExtension = "hm-backup";
extraSpecialArgs = {inherit inputs userSettings systemSettings;};
users.${userSettings.username} = homeConfig;
};
users.users.${userSettings.username}.home = systemSettings.homeDir;
}
# We expose some extra arguments so that our modules can parameterize
# better based on these values.
{
config._module.args = {
currentSystem = system;
# currentSystemName = name;
# currentSystemUser = userSettings.username;
inherit inputs userSettings systemSettings;
};
}
]
# Add extra modules specified from config
++ extraModules;
}