nixos/multipass: init

nixos/modules/module-list.nix

@@ -1364,6 +1364,7 @@
   ./virtualisation/lxc.nix
   ./virtualisation/lxcfs.nix
   ./virtualisation/lxd.nix
+  ./virtualisation/multipass.nix
   ./virtualisation/nixos-containers.nix
   ./virtualisation/oci-containers.nix
   ./virtualisation/openstack-options.nix

nixos/modules/virtualisation/multipass.nix

@@ -0,0 +1,61 @@
+{ config
+, lib
+, pkgs
+, ...
+}:
+
+let
+  cfg = config.virtualisation.multipass;
+in
+{
+  options = {
+    virtualisation.multipass = {
+      enable = lib.mkEnableOption (lib.mdDoc ''
+        Multipass, a simple manager for virtualised Ubuntu instances.
+      '');
+
+      logLevel = lib.mkOption {
+        type = lib.types.enum [ "error" "warning" "info" "debug" "trace" ];
+        default = "debug";
+        description = lib.mdDoc ''
+          The logging verbosity of the multipassd binary.
+        '';
+      };
+
+      package = lib.mkPackageOptionMD pkgs "multipass" { };
+    };
+  };
+
+  config = lib.mkIf cfg.enable {
+    environment.systemPackages = [ cfg.package ];
+
+    systemd.services.multipass = {
+      description = "Multipass orchestrates virtual Ubuntu instances.";
+
+      wantedBy = [ "multi-user.target" ];
+      wants = [ "network.target" ];
+      after = [ "network.target" ];
+
+      environment = {
+        "XDG_DATA_HOME" = "/var/lib/multipass/data";
+        "XDG_CACHE_HOME" = "/var/lib/multipass/cache";
+        "XDG_CONFIG_HOME" = "/var/lib/multipass/config";
+      };
+
+      serviceConfig = {
+        ExecStart = "${cfg.package}/bin/multipassd --logger platform --verbosity ${cfg.logLevel}";
+        SyslogIdentifer = "multipassd";
+        Restart = "on-failure";
+        TimeoutStopSec = 300;
+        Type = "simple";
+
+        WorkingDirectory = "/var/lib/multipass";
+
+        StateDirectory = "multipass";
+        StateDirectoryMode = "0750";
+        CacheDirectory = "multipass";
+        CacheDirectoryMode = "0750";
+      };
+    };
+  };
+}