Migrate config from dotfiles

hosts/helios/README.md

@@ -0,0 +1,38 @@
+# Helios
+
+## Overview
+Dell OptiPlex 980 small form factor desktop.
+
+## Specs
+* CPU - Intel Core i7-860 @ 2.8GHz
+* Chipset - Intel Q57 Express
+* Memory - 8 GB DDR2
+* GPU - AMD FirePro 2460
+* NIC - Intel Gigabit 82578DM
+
+### Disks
+Device | Partitions _(filesystem, size, usage)_
+--- | ---
+SanDisk Ultra II | `/dev/sda1` (ext2, 200 MiB, NixOS Boot) <br> `/dev/sda2` (ZFS, 480 GiB, NixOS Root)
+
+> Note: The BIOS firmware on this machine only supports booting from disks with
+> an MBR partition table.
+
+#### ZFS pool layout
+```
+rpool/
+├── local
+│   ├── nix
+│   └── tmp
+├── system
+│   ├── root
+│   └── var
+└── user
+    └── home
+```
+
+See [Graham Christensen's article](https://grahamc.com/blog/nixos-on-zfs/#datasets) for the motivation behind these datasets.
+
+### Networks
+- DHCP on `192.168.1.0/24` subnet.
+- Tailscale on `100.64.0.0/10` subnet. FQDN: `helios.mesh.vimium.net`.

hosts/helios/default.nix

@@ -0,0 +1,50 @@
+{ config, lib, pkgs, ... }:
+
+with lib.my;
+{
+  imports = [
+    ./hardware-configuration.nix
+    ../desktop.nix
+  ];
+
+  boot.loader.grub.enable = true;
+  boot.loader.grub.version = 2;
+  boot.loader.grub.device = "/dev/sda";
+  boot.loader.grub.zfsSupport = true;
+
+  networking.hostName = "helios";
+  networking.hostId = "47d23505";
+  networking.networkmanager.enable = true;
+
+  nix.package = pkgs.nixFlakes;
+  nix.extraOptions = ''
+    experimental-features = nix-command flakes
+  '';
+
+  users.defaultUserShell = pkgs.zsh;
+
+  system.stateVersion = "22.11";
+
+  modules = {
+    desktop = {
+      apps.qbittorrent.enable = true;
+      browsers = {
+        firefox.enable = true;
+      };
+    };
+    dev = {
+      node.enable = true;
+    };
+    editors = {
+      neovim.enable = true;
+    };
+    security = {
+      gpg.enable = true;
+      pass.enable = true;
+    };
+    shell = {
+      git.enable = true;
+      zsh.enable = true;
+    };
+  };
+}

hosts/helios/hardware-configuration.nix

@@ -0,0 +1,65 @@
+# Do not modify this file!  It was generated by ‘nixos-generate-config’
+# and may be overwritten by future invocations.  Please make changes
+# to /etc/nixos/configuration.nix instead.
+{ config, lib, pkgs, modulesPath, ... }:
+
+{
+  imports =
+    [ (modulesPath + "/installer/scan/not-detected.nix")
+    ];
+
+  boot.initrd.availableKernelModules = [ "ehci_pci" "ahci" "usbhid" "usb_storage" "sd_mod" "sr_mod" "zfs" ];
+  boot.initrd.kernelModules = [ ];
+  boot.initrd.supportedFilesystems = [ "zfs" ];
+  boot.kernelModules = [ "kvm-intel" ];
+  boot.kernelParams = [ "elevator=none" ];
+  boot.extraModulePackages = [ ];
+  boot.supportedFilesystems = [ "zfs" ];
+
+  fileSystems."/" =
+    { device = "rpool/system/root";
+      fsType = "zfs";
+    };
+
+  fileSystems."/home" =
+    { device = "rpool/user/home";
+      fsType = "zfs";
+    };
+
+  fileSystems."/nix" =
+    { device = "rpool/local/nix";
+      fsType = "zfs";
+    };
+
+  fileSystems."/tmp" =
+    { device = "rpool/local/tmp";
+      fsType = "zfs";
+    };
+
+  fileSystems."/var/log" =
+    { device = "rpool/system/var/log";
+      fsType = "zfs";
+    };
+
+  fileSystems."/var/tmp" =
+    { device = "rpool/system/var/tmp";
+      fsType = "zfs";
+    };
+
+  fileSystems."/boot" =
+    { device = "/dev/sda1";
+      fsType = "ext2";
+    };
+
+  swapDevices = [ ];
+
+  # Enables DHCP on each ethernet and wireless interface. In case of scripted networking
+  # (the default) this is the recommended approach. When using systemd-networkd it's
+  # still possible to use this option, but it's recommended to use it in conjunction
+  # with explicit per-interface declarations with `networking.interfaces.<interface>.useDHCP`.
+  networking.useDHCP = lib.mkDefault true;
+  # networking.interfaces.eno1.useDHCP = lib.mkDefault true;
+
+  nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";
+  hardware.cpu.intel.updateMicrocode = lib.mkDefault config.hardware.enableRedistributableFirmware;
+}