add n0emis, some packages and pre-yate-n0emis

modules/default.nix

@@ -0,0 +1,7 @@
+{ ... }:
+
+{
+  imports = [
+    ./yate
+  ];
+}

modules/yate/default.nix

@@ -0,0 +1,61 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+
+let cfg = config.services.yate;
+in {
+  options = {
+    services.yate = {
+      enable = mkEnableOption "yate";
+      config = mkOption {
+        type = with types; attrsOf anything;
+        default = { };
+      };
+    };
+  };
+  config = let
+    mkCfgFile = name: config:
+      let
+        content =
+          if (isString config) then config else generators.toINI { } config;
+      in { "yate/${name}.conf".text = content; };
+    environmentFiles = mkMerge
+      (map (key: mkCfgFile key (getAttr key cfg.config))
+        (attrNames cfg.config));
+  in mkIf cfg.enable {
+    environment.etc = environmentFiles;
+    systemd.services.yate = {
+      description = "YATE Telephony Server";
+      wantedBy = [ "multi-user.target" ];
+      after = [ "network-online.target" "postgresql.service" ];
+
+      environment = { PWLIB_ASSERT_ACTION = "C"; };
+
+      serviceConfig = {
+        Type = "forking";
+        ExecStart =
+          "${pkgs.yate}/bin/yate -d -p /run/yate/yate.pid -c /etc/yate -F -s -q -DF -r -l /var/lib/yate/yate.log";
+        ExecReload = "${pkgs.coreutils}/bin/kill -HUP $MAINPID";
+        User = "yate";
+        Group = "yate";
+        AmbientCapabilities = "CAP_NET_BIND_SERVICE";
+        RuntimeDirectory = "yate";
+        RuntimeDirectoryMode = "0755";
+        StateDirectory = "yate";
+        StateDirectoryMode = "0700";
+        PIDFile = "/run/yate/yate.pid";
+        TimeoutSec = 30;
+      };
+
+      reloadTriggers =
+        map (name: config.environment.etc."yate/${name}.conf".source)
+        (attrNames cfg.config);
+    };
+
+    users.users.yate = {
+      isSystemUser = true;
+      group = "yate";
+    };
+    users.groups.yate = { };
+  };
+}