add module for matrix-corporal

modules/matrix-corporal.nix

@@ -0,0 +1,34 @@
+{ lib, pkgs, config, ... }:
+let
+  cfg = config.services.matrix-corporal;
+in
+{
+  options.services.matrix-corporal = {
+    enable = lib.mkEnableOption "Start matrix-corporal";
+
+    package = lib.mkOption {
+      type = lib.types.package;
+      default = pkgs.nur.repos.dandellion.matrix-corporal;
+    };
+
+    settings = lib.mkOption {
+      default = {};
+      description = ''
+        Configuration for matrix-corporal, see <link xlink:href="https://github.com/devture/matrix-corporal/blob/master/docs/configuration.md"/>
+        for supported values.
+      '';
+    };
+  };
+
+  config = lib.mkIf cfg.enable {
+    systemd.services.pantalaimon = {
+      wantedBy = [ "default.target" ];
+      after    = [ "network-online.target" ];
+      serviceConfig = {
+        Type = "simple";
+        DynamicUser="yes";
+        ExecStart = "${cfg.package}/bin/matrix-corporal -c ${pkgs.writeTextFile {name = "matrix-corporal-config.json"; text = lib.generators.toJSON {} cfg.settings;}}";
+      };
+    };
+  };
+}