From 1fa05e98225e43df09162b0993d1341fafc80a4b Mon Sep 17 00:00:00 2001
From: "Alexander \"PapaTutuWawa" <papatutuwawa@polynom.me>
Date: Fri, 11 Feb 2022 14:01:52 +0100
Subject: [PATCH] virtiofsd: Implement

---
 hosts/miku.nix                                | 27 ++++++++--
 modules/services/greetd/default.nix           | 53 +++++++++++++++++++
 modules/virtualisation/gaming.nix             | 16 +++++-
 .../virtualisation/virtiofsd/default.nix      | 32 +++++++++++
 4 files changed, 122 insertions(+), 6 deletions(-)
 create mode 100644 modules/services/greetd/default.nix
 create mode 100644 packages/tools/virtualisation/virtiofsd/default.nix

diff --git a/hosts/miku.nix b/hosts/miku.nix
index 75eaf5b..6439247 100644
--- a/hosts/miku.nix
+++ b/hosts/miku.nix
@@ -16,7 +16,7 @@
     };
     "/mnt/Storage" = {
       device = "/dev/disk/by-label/storage";
-      fsType = "ext4";
+      fsType = "btrfs";
     };
   };
 
@@ -39,14 +39,23 @@
     anki
     #psst
   ];
-
+  
   ptw = {
     programs = {
       mpv = {
         primaryScreen = "C27F398";
         enable = true;
       }; 
-      sway.enable = true;
+      sway = {
+        enable = true;
+        extraSessionCommands = ''
+          # Pick the dGPU as the first one
+          #DGPU_DRM_NODE=$(ls /sys/bus/pci/devices/0000:01:00.0/drm | grep card)
+          #IGPU_DRM_NODE=$(ls /sys/bus/pci/devices/0000:08:00.0/drm | grep card)
+          
+          #WLR_DRM_DEVICES=/dev/dri/$DGPU_DRM_NODE:/dev/dri/$IGPU_DRM_NODE
+        '';
+      };
       alacritty.enable = true;
       emacs.enable = true;
       firefox.enable = true;
@@ -66,6 +75,16 @@
     services = {
       gamemode.enable = true;
       gnome.enable = true;
+      greetd = {
+        enable = true;
+	/*
+        swayExtra = ''
+          output HDMI-A-3 transform 90 anticlockwise
+
+          workspace 1 output HDMI-A-3
+        '';
+	*/
+      };
       kanshi = let
         horizontal = "Samsung Electric Company C27F398 H4ZR101145";
         vertical = "Goldstar Company Ltd IPS235 305NDPHKN600";
@@ -181,7 +200,7 @@
       libinput.enable = true;
       displayManager.gdm = {
         wayland = true;
-        enable = true;
+        enable = false;
       };
     };
   };
diff --git a/modules/services/greetd/default.nix b/modules/services/greetd/default.nix
new file mode 100644
index 0000000..3438d49
--- /dev/null
+++ b/modules/services/greetd/default.nix
@@ -0,0 +1,53 @@
+{ lib, config, ... }:
+
+let
+  cfg = config.ptw.services.greetd;
+in {
+  options.ptw.services.greetd = {
+    enable = lib.mkEnableOption "Enable greetd with gtkgreet";
+    swayExtra = lib.mkOption {
+      description = "Extra options to include in the sway config";
+      default = "";
+    };
+  };
+
+  config = lib.mkIf cfg.enable {
+    users.users.greeter = {
+      isSystemUser = lib.mkForce false;
+      isNormalUser = true;
+      createHome = true;
+      uid = 992;
+    };
+
+    services = {
+      greetd = {
+        enable = true;
+        restart = true;
+        settings = {
+          default_session = let
+            swayConfig = pkgs.writeText "login-sway-config" ''
+              exec ${pkgs.greetd.gtkgreet}/bin/gtkgreet -l; ${pkgs.sway}/bin/swaymsg exit;
+
+              bindsym Mod4+shift+e exec swaynag \
+                 -t warning \
+                 -m 'What do you want to do?' \
+                 -b 'Poweroff' 'systemctl poweroff' \
+                 -b 'Reboot' 'systemctl reboot'
+
+              input "*" {
+                xkb_layout de
+              }
+
+              ${cfg.swayExtra}
+
+              include /etc/sway/config.d/*
+            '';
+          in {
+            command = "${pkgs.sway}/bin/sway --config ${swayConfig}";
+            user = "greeter";
+          };
+        };
+      };
+    };
+  };
+}
diff --git a/modules/virtualisation/gaming.nix b/modules/virtualisation/gaming.nix
index e1bbc90..7554b3a 100644
--- a/modules/virtualisation/gaming.nix
+++ b/modules/virtualisation/gaming.nix
@@ -83,10 +83,22 @@ in {
     services.udev.packages = with pkgs; [ evdev-proxy ];
     
     systemd = {
-      services.libvirtd.path = with pkgs; [ vfio-isolate systemd bash ];
+      services = {
+        libvirtd.path = with pkgs; [ vfio-isolate systemd bash ];
+        virtiofsd = {
+          description = "vhost-user virtio-fs device backend written in Rust";
+          wantedBy = [ "default.target" "libvirtd.service" ];
+          serviceConfig = {
+            Type = "simple";
+            ExecStart = "${pkgs.virtiofsd}/bin/virtiofsd --socket-path=/tmp/vfsd.sock --shared-dir /mnt/Storage/Games --announce-submounts --inode-file-handles=mandatory";
+            Restart = "always";
+          };
+        };
+      };
+
       user.services.evdev-proxy = {
         description = "Creates virtual device to proxy evdev devices events";
-        #wantedBy = [ "default.target" ];
+        wantedBy = [ "default.target" ];
         serviceConfig = {
           Type = "simple";
           ExecStart = "${pkgs.evdev-proxy}/bin/evdev-proxy";
diff --git a/packages/tools/virtualisation/virtiofsd/default.nix b/packages/tools/virtualisation/virtiofsd/default.nix
new file mode 100644
index 0000000..9372d42
--- /dev/null
+++ b/packages/tools/virtualisation/virtiofsd/default.nix
@@ -0,0 +1,32 @@
+{
+  lib
+, rustPlatform
+, pkgconfig, libcap_ng, libseccomp
+, fetchFromGitLab
+}:
+
+rustPlatform.buildRustPackage rec {
+  pname = "virtiofsd";
+  version = "1.1.0";
+
+  src = fetchFromGitLab {
+    owner = "virtio-fs";
+    repo = "virtiofsd";
+    rev = "a31ad19efc302836a364fd6d79bda63160404b01";
+    sha256 = "12nxm40sjx2jzl1j2czzanmk9b922dvfh64ndvgf5z4g4cviv33x";
+  };
+
+  cargoSha256 = "sha256-uRPmZE/xc0yeurBZ4rnrZua5d4lbPwStMUacFgbquuk=";
+  
+  nativeBuildInputs = [ pkgconfig ];
+
+  buildInputs = [ libcap_ng libseccomp ];
+
+  meta = with lib; {
+    description = "vhost-user virtio-fs device backend written in Rust";
+    homepage = "https://gitlab.com/virtio-fs/virtiofsd";
+    license = licenses.bsd3;
+    maintainers = [];
+    platforms = platforms.linux;
+  };
+}