Add double rainbow host

flake.nix

@@ -130,6 +130,12 @@
             ./system/rainbow-gitlab-runner.nix
           ] ++ common_modules;
         };
+        double-rainbow = lib.nixosSystem {
+          inherit system specialArgs;
+          modules = [
+            ./hosts/double-rainbow.nix
+          ] ++ common_modules;
+        };
         pixie = lib.nixosSystem {
           inherit system specialArgs;
           modules = [ ./hosts/pixie.nix ] ++ common_modules ++ [{

hosts/double-rainbow.nix

@@ -0,0 +1,44 @@
+{ config, lib, pkgs, modulesPath, ... }:
+let
+  btrfs_options = [ "compress=zstd:3" "noatime" "x-systemd.device-timeout=0" ];
+  btrfs_ssd = [ "ssd" "discard=async" ];
+in
+{
+  imports = [ (modulesPath + "/installer/scan/not-detected.nix") ];
+
+  boot.initrd.availableKernelModules =
+    [ "xhci_pci" "ahci" "nvme" "usb_storage" "usbhid" "sd_mod" ];
+  boot.initrd.kernelModules = [ "i915" ];
+  boot.kernelModules = [ "kvm-intel" ];
+  boot.extraModulePackages = [ ];
+
+  fileSystems."/" = {
+    device = "/dev/disk/by-uuid/a072a77b-ca29-47df-be65-6d310d067d78";
+    fsType = "btrfs";
+    options = [ "subvol=@" ] ++ btrfs_options ++ btrfs_ssd;
+  };
+
+  boot.initrd.luks.devices."luks-d6573cf8-25f0-4ffc-8046-ac3a4db1e964".device =
+    "/dev/disk/by-uuid/d6573cf8-25f0-4ffc-8046-ac3a4db1e964";
+
+  fileSystems."/boot" = {
+    device = "/dev/disk/by-uuid/97EB-7DB5";
+    fsType = "vfat";
+  };
+
+  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.enp2s0.useDHCP = lib.mkDefault true;
+
+  nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";
+  powerManagement.cpuFreqGovernor = lib.mkDefault "ondemand";
+  hardware.cpu.intel.updateMicrocode =
+    lib.mkDefault config.hardware.enableRedistributableFirmware;
+
+  networking.hostName = "double-rainbow"; # Define your hostname.
+}