modularized into machine

modules/common/README.md

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+# Shared configurations
+
+Developed and designed by Wyatt J. Miller, 2024
+
+Licensed by the Mozilla Public License v2
+
+## Synopsis
+
+This is the directory that holds shared configuration files amongst computers that I own. They are called by the root `flake.nix` file.

modules/common/host-users.nix

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+{
+  pkgs,
+  userName,
+  hostname,
+  ...
+} @ args: {
+  # Set up networking configuration
+  networking.hostName = hostname;
+  # networking.computerName = hostname;
+  # networking.firewall.enable = true; # VERY important, do not touch
+  # networking.firewall.allowedTCPPorts = [];
+  # networking.firewall.allowedUDPPorts = [];
+  # networking.networkmanager.enable = pkgs.stdenv.isLinux; # Linux tool for managing network connections
+  # system.defaults.smb.NetBIOSName = hostname;
+
+  # Set up user accounts
+  # Don't forget to set a password with ‘passwd’!
+  users.users."${userName}" = {
+    home =
+      if pkgs.stdenv.isDarwin
+      then "/Users/${userName}"
+      else "/home/${userName}";
+    description = userName;
+    group = "wyatt";
+    isNormalUser = true;
+  };
+  users.groups.wyatt = {};
+
+  nix.settings.trusted-users = [userName];
+}

modules/common/nix-core.nix

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+
+{ pkgs, lib, ... }:
+
+{
+  # enable flakes globally
+  nix.settings.experimental-features = [ "nix-command" "flakes" ];
+
+  # Allow unfree packages
+  nixpkgs.config.allowUnfree = true;
+
+  # Auto upgrade nix package and the daemon service.
+  # services.nix-daemon.enable = true;
+  # Use this instead of services.nix-daemon.enable if you
+  # don't wan't the daemon service to be managed for you.
+  # nix.useDaemon = true;
+
+  nix.package = pkgs.nix;
+
+  # do garbage collection weekly to keep disk usage low
+  nix.gc = {
+    automatic = lib.mkDefault true;
+    options = lib.mkDefault "--delete-older-than 7d";
+  };
+
+  # Disable auto-optimise-store because of this issue:
+  #   https://github.com/NixOS/nix/issues/7273
+  # "error: cannot link '/nix/store/.tmp-link-xxxxx-xxxxx' to '/nix/store/.links/xxxx': File exists"
+  nix.settings = {
+    auto-optimise-store = false;
+  };
+}