feat: Add machine configurations

machines/gemini/hardware-configuration.nix

@@ -0,0 +1,58 @@
+# 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, modulesPath, ... }: {
+  imports = [
+    (modulesPath + "/installer/scan/not-detected.nix")
+  ];
+
+  boot.initrd.availableKernelModules = [ "nvme" "xhci_pci" "ahci" "usbhid" "usb_storage" "sd_mod" ];
+  boot.initrd.kernelModules = [ ];
+  boot.kernelModules = [ "kvm-amd" ];
+  boot.extraModulePackages = [ ];
+
+  fileSystems."/" = {
+    # device = "/dev/disk/by-label/NIXOSROOT";
+    device = "/dev/disk/by-label/NIXOSHOME";
+    fsType = "btrfs";
+    options = [ "subvol=root" ];
+  };
+
+  fileSystems."/steam" = {
+    device = "/dev/disk/by-label/STEAM";
+    fsType = "btrfs";
+  };
+
+  fileSystems."/home" = {
+    device = "/dev/disk/by-label/NIXOSHOME";
+    fsType = "btrfs";
+    options = [ "subvol=home" ];
+  };
+
+  fileSystems."/nix" = {
+    device = "/dev/disk/by-label/NIXOSROOT";
+    fsType = "btrfs";
+    options = [ "subvol=nix" ];
+  };
+
+  fileSystems."/boot" = {
+    device = "/dev/disk/by-label/BOOT";
+    fsType = "vfat";
+  };
+
+  swapDevices = [
+    {
+      device = "/dev/disk/by-label/SWAP";
+    }
+  ];
+
+  # 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.enp4s0.useDHCP = lib.mkDefault true;
+
+  nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";
+  hardware.cpu.amd.updateMicrocode = lib.mkDefault config.hardware.enableRedistributableFirmware;
+}