feat: Calculon (hydra) VM added

common/nixos/hydra.nix

@@ -6,15 +6,22 @@
   outputs,
   ...
 }: {
+  networking.firewall = {
+    enable = true;
+    allowedTCPPorts = [3001];
+  };
   services.hydra = {
     enable = true;
     port = 3001;
-    hydraURL = "http://localhost:3000"; # externally visible URL
+    hydraURL = "https://hydra.kdb424.xyz"; # externally visible URL
     notificationSender = "hydra@localhost"; # e-mail of hydra service
     # a standalone hydra will require you to unset the buildMachinesFiles list to avoid using a nonexistant /etc/nix/machines
-    buildMachinesFiles = [];
+    # buildMachinesFiles = [];
     # you will probably also want, otherwise *everything* will be built from scratch
     useSubstitutes = true;
+    extraConfig = ''
+      base_uri = https://hydra.kdb424.xyz
+    '';
   };
   nix.buildMachines = [
     {

flake.nix

@@ -120,10 +120,15 @@
         {home-manager.users.kdb424 = ./home-manager/machines/planex.nix;}
       ];
 
-      # Ryzen Second gen
+      # Epyc VM
       morbo = mkHeadlessNixos [
         ./hosts/morbo
       ];
+
+      # Epyc VM
+      calculon = mkHeadlessNixos [
+        ./hosts/calculon
+      ];
     };
 
     darwinConfigurations = {

hosts/calculon/default.nix

@@ -0,0 +1,29 @@
+{
+  config,
+  lib,
+  pkgs,
+  inputs,
+  outputs,
+  home-manager,
+  ...
+}: {
+  imports = [
+    # Include the results of the hardware scan.
+    ./hardware-configuration.nix
+    ../../common/nixos/common.nix
+    ../../common/nixos/hydra.nix
+    ../../common/networking/zerotier.nix
+  ];
+
+  # Bootloader.
+  boot.loader.grub.enable = true;
+  boot.loader.grub.device = "/dev/sda";
+  boot.loader.grub.useOSProber = true;
+  networking.hostName = "calculon";
+
+  # Enable networking
+  networking.networkmanager.enable = true;
+
+  # Enable the OpenSSH daemon.
+  services.openssh.enable = true;
+}

hosts/calculon/hardware-configuration.nix

@@ -0,0 +1,36 @@
+# 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 + "/profiles/qemu-guest.nix")
+    ];
+
+  boot.initrd.availableKernelModules = [ "ata_piix" "uhci_hcd" "virtio_pci" "virtio_scsi" "sd_mod" "sr_mod" ];
+  boot.initrd.kernelModules = [ ];
+  boot.kernelModules = [ "kvm-amd" ];
+  boot.extraModulePackages = [ ];
+
+  fileSystems."/" =
+    { device = "/dev/disk/by-uuid/abf4c24f-5999-44ed-b412-e40dc98a71ac";
+      fsType = "ext4";
+    };
+
+  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.ens18.useDHCP = lib.mkDefault true;
+
+  nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";
+  zramSwap = {
+    enable = true;
+    memoryPercent = 25;
+    priority = 10;
+  };
+}

hosts/morbo/hardware-configuration.nix

@@ -32,4 +32,10 @@
 
   nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";
   hardware.cpu.amd.updateMicrocode = lib.mkDefault config.hardware.enableRedistributableFirmware;
+
+  zramSwap = {
+    enable = true;
+    memoryPercent = 25;
+    priority = 10;
+  };
 }