[VIRT] rename dir + looking-glass + scream

Author: Icy-Thought

hosts/probook-445g6/hardware.nix

@@ -26,9 +26,6 @@ in {
         [ "xhci_pci" "ahci" "usb_storage" "sd_mod" "rtsx_pci_sdmmc" ];
       kernelModules = [ ];
     };
-    extraModulePackages = [ ];
-    kernelModules = [ "kvm-amd" ];
-    kernelParams = [ ];
     kernel.sysctl = {
       "net.ipv4.icmp_echo_ignore_broadcasts" = 1; # Refuse ICMP echo requests
     };

hosts/thinkpad-e595/default.nix

@@ -66,7 +66,6 @@
       };
       distractions.steam.enable = true;
     };
-    virtualize.enable = true;
   };
 
   # KDE-Connect + Start-up indicator

hosts/thinkpad-e595/hardware.nix

@@ -39,7 +39,7 @@ in {
       kernelModules = [ ];
     };
     extraModulePackages = [ config.boot.kernelPackages.acpi_call ];
-    kernelModules = [ "thinkpad_acpi" "acpi_call" "kvm_amd" ];
+    kernelModules = [ "thinkpad_acpi" "acpi_call" ];
     kernelParams = [ "pcie_aspm.policy=performance" ];
     kernel.sysctl = {
       "net.ipv4.icmp_echo_ignore_broadcasts" = 1; # Refuse ICMP echo requests

modules/desktop/distractions/lutris.nix

@@ -18,7 +18,7 @@ in {
       user.packages = attrValues ({
         lutris =
           pkgs.lutris.override { extraLibraries = pkgs: [ pkgs.jansson ]; };
-      } // optionalAttrs (config.modules.virtualize.wine.enable == false) {
+      } // optionalAttrs (config.modules.virtualisation.wine.enable == false) {
         inherit (pkgs) winetricks;
         inherit (pkgs.wineWowPackages) fonts stagingFull;
       });

modules/virtualize/containers/archlinux.nix

@@ -2,11 +2,11 @@
 
 let inherit (lib.modules) mkIf;
 in {
-  options.modules.virtualize.containers.archlinux =
+  options.modules.virtualisation.containers.archlinux =
     let inherit (lib.options) mkEnableOption;
     in { enable = mkEnableOption "arch-linux container"; };
 
-  config = mkIf config.modules.virtualize.containers.archlinux.enable {
+  config = mkIf config.modules.virtualisation.containers.archlinux.enable {
     virtualisation.libvirtd = {
       enable = true;
       qemuVerbatimConfig = ''

modules/virtualize/containers/transmission.nix

@@ -2,9 +2,9 @@
 
 let
   inherit (lib.modules) mkIf;
-  cfg = config.modules.virtualize.containers.transmission;
+  cfg = config.modules.virtualisation.containers.transmission;
 in {
-  options.modules.virtualize.containers.transmission = let
+  options.modules.virtualisation.containers.transmission = let
     inherit (lib.options) mkOption mkEnableOption;
     inherit (lib.types) path str;
   in {

modules/virtualize/default.nix

@@ -0,0 +1,60 @@
+{ options, config, lib, pkgs, ... }:
+
+let
+  inherit (lib.attrsets) attrValues;
+  inherit (lib.modules) mkIf;
+  virtCfg = config.modules.virtualisation;
+in {
+  options.modules.virtualisation.kvm = let inherit (lib.options) mkEnableOption;
+  in {
+    enable = mkEnableOption "Kernel-based Virutal Machine.";
+    vendor = lib.types.enum [ "amd" "intel" ] "amd";
+  };
+
+  config = mkIf virtCfg.kvm.enable {
+    virtCfg.looking-glass.enable = true;
+
+    user.packages = attrValues { inherit (pkgs) virt-manager; };
+
+    boot = {
+      kernelModules =
+        # https://wiki.archlinux.org/title/PCI_passthrough_via_OVMF#modprobe.d
+        [ "kvm-${virtCfg.vendor}" "vfio" "vfio_iommu_type1" "vfio_pci" ];
+      kernelParams = [
+        "${virtCfg.vendor}_iommu=on"
+        "${virtCfg.vendor}_iommu=pt"
+        "kvm.ignore_msrs=1" # https://pve.proxmox.com/wiki/PCI_Passthrough#Tips
+      ];
+      extraModprobeConfig = ''
+        softdep drm pre: vfio vfio-pci
+      '';
+    };
+
+    virtualisation = {
+      libvirtd = {
+        enable = true;
+        onBoot = "ignore";
+        onShutdown = "shutdown";
+        qemu = {
+          ovmf = true;
+          swtpm = true;
+          runAsRoot = false;
+        };
+      };
+    };
+
+    user.extraGroups = [ "libvirtd" ];
+
+    systemd.user.services.scream-ivshmem = {
+      after =
+        [ "libvirtd.service" "pipewire.service" "pipewire-pulse.service" ];
+      wantedBy = [ "graphical-session.target" ];
+      partOf = [ "graphical-session.target" ];
+      serviceConfig = {
+        Type = "simple";
+        Restart = "on-failure";
+        ExecStart = "${lib.getExe pkgs.scream} -m /dev/shm/scream -o pulse";
+      };
+    };
+  };
+}

modules/virtualize/kvm.nix

@@ -0,0 +1,38 @@
+{ options, config, lib, pkgs, ... }:
+
+let inherit (lib.modules) mkIf;
+in {
+  options.modules.virtualisation.looking-glass =
+    let inherit (lib.options) mkEnableOption;
+    in {
+      enable =
+        mkEnableOption "KVM(s) VGA PCI Pass-through without peripherals.";
+    };
+
+  config = mkIf config.modules.virtualisation.looking-glass.enable {
+
+    hm.programs.looking-glass-client = {
+      enable = true;
+      package = pkgs.unstable.looking-glass-client;
+      settings = {
+        app = {
+          allowDMA = true;
+          shmFile = "/dev/shm/looking-glass";
+        };
+        input = {
+          rawMouse = true;
+          escapeKey = "56"; # linux/input-event-codes.h
+        };
+        spice = {
+          enable = true;
+          audio = true;
+        };
+        win = {
+          autoResize = true;
+          borderless = true;
+          quickSplash = true;
+        };
+      };
+    };
+  };
+}

modules/virtualize/looking-glass.nix

@@ -4,10 +4,11 @@ let
   inherit (lib.attrsets) attrValues;
   inherit (lib.modules) mkIf;
 in {
-  options.modules.virtualize.podman = let inherit (lib.options) mkEnableOption;
-  in { enable = mkEnableOption "Enable the Podman container engine"; };
+  options.modules.virtualisation.podman =
+    let inherit (lib.options) mkEnableOption;
+    in { enable = mkEnableOption "Enable the Podman container engine"; };
 
-  config = mkIf config.modules.virtualize.podman.enable {
+  config = mkIf config.modules.virtualisation.podman.enable {
     virtualisation.podman = {
       enable = true;
       dockerCompat = true; # docker = podman (alias)