Merge branch 'nixos-unstable-small' of https://github.com/NixOS/nixpkgs

1 files changed, 102 insertions, 0 deletions

diff --git a/nixpkgs/nixos/modules/services/hardware/monado.nix b/nixpkgs/nixos/modules/services/hardware/monado.nix
new file mode 100644
index 000000000000..9f9c6c39a0b4
--- /dev/null
+++ b/nixpkgs/nixos/modules/services/hardware/monado.nix
@@ -0,0 +1,102 @@
+{ config
+, lib
+, pkgs
+, ...
+}:
+let
+  inherit (lib) mkDefault mkEnableOption mkIf mkOption mkPackageOption types;
+
+  cfg = config.services.monado;
+
+in
+{
+  options.services.monado = {
+    enable = mkEnableOption "Monado user service";
+
+    package = mkPackageOption pkgs "monado" { };
+
+    defaultRuntime = mkOption {
+      type = types.bool;
+      description = ''
+        Whether to enable Monado as the default OpenXR runtime on the system.
+
+        Note that applications can bypass this option by setting an active
+        runtime in a writable XDG_CONFIG_DIRS location like `~/.config`.
+      '';
+      default = false;
+      example = true;
+    };
+
+    highPriority = mkEnableOption "high priority capability for monado-service"
+      // mkOption { default = true; };
+  };
+
+  config = mkIf cfg.enable {
+    security.wrappers."monado-service" = mkIf cfg.highPriority {
+      setuid = false;
+      owner = "root";
+      group = "root";
+      # cap_sys_nice needed for asynchronous reprojection
+      capabilities = "cap_sys_nice+eip";
+      source = lib.getExe' cfg.package "monado-service";
+    };
+
+    services.udev.packages = with pkgs; [ xr-hardware ];
+
+    systemd.user = {
+      services.monado = {
+        description = "Monado XR runtime service module";
+        requires = [ "monado.socket" ];
+        conflicts = [ "monado-dev.service" ];
+
+        unitConfig.ConditionUser = "!root";
+
+        environment = {
+          # Default options
+          # https://gitlab.freedesktop.org/monado/monado/-/blob/4548e1738591d0904f8db4df8ede652ece889a76/src/xrt/targets/service/monado.in.service#L12
+          XRT_COMPOSITOR_LOG = mkDefault "debug";
+          XRT_PRINT_OPTIONS = mkDefault "on";
+          IPC_EXIT_ON_DISCONNECT = mkDefault "off";
+        };
+
+        serviceConfig = {
+          ExecStart =
+            if cfg.highPriority
+            then "${config.security.wrapperDir}/monado-service"
+            else lib.getExe' cfg.package "monado-service";
+          Restart = "no";
+        };
+
+        restartTriggers = [ cfg.package ];
+      };
+
+      sockets.monado = {
+        description = "Monado XR service module connection socket";
+        conflicts = [ "monado-dev.service" ];
+
+        unitConfig.ConditionUser = "!root";
+
+        socketConfig = {
+          ListenStream = "%t/monado_comp_ipc";
+          RemoveOnStop = true;
+
+          # If Monado crashes while starting up, we want to close incoming OpenXR connections
+          FlushPending = true;
+        };
+
+        restartTriggers = [ cfg.package ];
+
+        wantedBy = [ "sockets.target" ];
+      };
+    };
+
+    environment.systemPackages = [ cfg.package ];
+    environment.pathsToLink = [ "/share/openxr" ];
+
+    environment.etc."xdg/openxr/1/active_runtime.json" = mkIf cfg.defaultRuntime {
+      source = "${cfg.package}/share/openxr/1/openxr_monado.json";
+    };
+  };
+
+  meta.maintainers = with lib.maintainers; [ Scrumplex ];
+}