uboot: (firmwareOdroidC2/C4) don't invoke patch tool, use patches = [] instead

https://github.com/NixOS/nixpkgs/blob/master/pkgs/stdenv/generic/setup.sh#L948
this can do it nicely.

Signed-off-by: Anton Arapov <anton@deadbeef.mx>

nixos/modules/services/monitoring/dd-agent/dd-agent-defaults.nix

@@ -0,0 +1,8 @@
+# Generated using update-dd-agent-default, please re-run after updating dd-agent. DO NOT EDIT MANUALLY.
+[
+  "auto_conf"
+  "agent_metrics.yaml.default"
+  "disk.yaml.default"
+  "network.yaml.default"
+  "ntp.yaml.default"
+]

nixos/modules/services/monitoring/dd-agent/dd-agent.nix

@@ -0,0 +1,236 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+
+let
+  cfg = config.services.dd-agent;
+
+  ddConf = pkgs.writeText "datadog.conf" ''
+    [Main]
+    dd_url: https://app.datadoghq.com
+    skip_ssl_validation: no
+    api_key: ${cfg.api_key}
+    ${optionalString (cfg.hostname != null) "hostname: ${cfg.hostname}"}
+
+    collector_log_file: /var/log/datadog/collector.log
+    forwarder_log_file: /var/log/datadog/forwarder.log
+    dogstatsd_log_file: /var/log/datadog/dogstatsd.log
+    pup_log_file:       /var/log/datadog/pup.log
+
+    # proxy_host: my-proxy.com
+    # proxy_port: 3128
+    # proxy_user: user
+    # proxy_password: password
+
+    # tags: mytag0, mytag1
+    ${optionalString (cfg.tags != null ) "tags: ${concatStringsSep ", " cfg.tags }"}
+
+    # collect_ec2_tags: no
+    # recent_point_threshold: 30
+    # use_mount: no
+    # listen_port: 17123
+    # graphite_listen_port: 17124
+    # non_local_traffic: no
+    # use_curl_http_client: False
+    # bind_host: localhost
+
+    # use_pup: no
+    # pup_port: 17125
+    # pup_interface: localhost
+    # pup_url: http://localhost:17125
+
+    # dogstatsd_port : 8125
+    # dogstatsd_interval : 10
+    # dogstatsd_normalize : yes
+    # statsd_forward_host: address_of_own_statsd_server
+    # statsd_forward_port: 8125
+
+    # device_blacklist_re: .*\/dev\/mapper\/lxc-box.*
+
+    # ganglia_host: localhost
+    # ganglia_port: 8651
+  '';
+
+  diskConfig = pkgs.writeText "disk.yaml" ''
+    init_config:
+
+    instances:
+      - use_mount: no
+  '';
+
+  networkConfig = pkgs.writeText "network.yaml" ''
+    init_config:
+
+    instances:
+      # Network check only supports one configured instance
+      - collect_connection_state: false
+        excluded_interfaces:
+          - lo
+          - lo0
+  '';
+
+  postgresqlConfig = pkgs.writeText "postgres.yaml" cfg.postgresqlConfig;
+  nginxConfig = pkgs.writeText "nginx.yaml" cfg.nginxConfig;
+  mongoConfig = pkgs.writeText "mongo.yaml" cfg.mongoConfig;
+  jmxConfig = pkgs.writeText "jmx.yaml" cfg.jmxConfig;
+  processConfig = pkgs.writeText "process.yaml" cfg.processConfig;
+
+  etcfiles =
+    let
+      defaultConfd = import ./dd-agent-defaults.nix;
+    in
+      listToAttrs (map (f: {
+        name = "dd-agent/conf.d/${f}";
+        value.source = "${pkgs.dd-agent}/agent/conf.d-system/${f}";
+      }) defaultConfd) //
+      {
+        "dd-agent/datadog.conf".source = ddConf;
+        "dd-agent/conf.d/disk.yaml".source = diskConfig;
+        "dd-agent/conf.d/network.yaml".source = networkConfig;
+      } //
+      (optionalAttrs (cfg.postgresqlConfig != null)
+      {
+        "dd-agent/conf.d/postgres.yaml".source = postgresqlConfig;
+      }) //
+      (optionalAttrs (cfg.nginxConfig != null)
+      {
+        "dd-agent/conf.d/nginx.yaml".source = nginxConfig;
+      }) //
+      (optionalAttrs (cfg.mongoConfig != null)
+      {
+        "dd-agent/conf.d/mongo.yaml".source = mongoConfig;
+      }) //
+      (optionalAttrs (cfg.processConfig != null)
+      {
+        "dd-agent/conf.d/process.yaml".source = processConfig;
+      }) //
+      (optionalAttrs (cfg.jmxConfig != null)
+      {
+        "dd-agent/conf.d/jmx.yaml".source = jmxConfig;
+      });
+
+in {
+  options.services.dd-agent = {
+    enable = mkOption {
+      description = ''
+        Whether to enable the dd-agent v5 monitoring service.
+        For datadog-agent v6, see <option>services.datadog-agent.enable</option>.
+      '';
+      default = false;
+      type = types.bool;
+    };
+
+    api_key = mkOption {
+      description = ''
+        The Datadog API key to associate the agent with your account.
+
+        Warning: this key is stored in cleartext within the world-readable
+        Nix store! Consider using the new v6
+        <option>services.datadog-agent</option> module instead.
+      '';
+      example = "ae0aa6a8f08efa988ba0a17578f009ab";
+      type = types.str;
+    };
+
+    tags = mkOption {
+      description = "The tags to mark this Datadog agent";
+      example = [ "test" "service" ];
+      default = null;
+      type = types.nullOr (types.listOf types.str);
+    };
+
+    hostname = mkOption {
+      description = "The hostname to show in the Datadog dashboard (optional)";
+      default = null;
+      example = "mymachine.mydomain";
+      type = types.nullOr types.str;
+    };
+
+    postgresqlConfig = mkOption {
+      description = "Datadog PostgreSQL integration configuration";
+      default = null;
+      type = types.nullOr types.lines;
+    };
+
+    nginxConfig = mkOption {
+      description = "Datadog nginx integration configuration";
+      default = null;
+      type = types.nullOr types.lines;
+    };
+
+    mongoConfig = mkOption {
+      description = "MongoDB integration configuration";
+      default = null;
+      type = types.nullOr types.lines;
+    };
+
+    jmxConfig = mkOption {
+      description = "JMX integration configuration";
+      default = null;
+      type = types.nullOr types.lines;
+    };
+
+    processConfig = mkOption {
+      description = ''
+        Process integration configuration
+        See <link xlink:href="https://docs.datadoghq.com/integrations/process/"/>
+      '';
+      default = null;
+      type = types.nullOr types.lines;
+    };
+
+  };
+
+  config = mkIf cfg.enable {
+    environment.systemPackages = [ pkgs.dd-agent pkgs.sysstat pkgs.procps ];
+
+    users.users.datadog = {
+      description = "Datadog Agent User";
+      uid = config.ids.uids.datadog;
+      group = "datadog";
+      home = "/var/log/datadog/";
+      createHome = true;
+    };
+
+    users.groups.datadog.gid = config.ids.gids.datadog;
+
+    systemd.services = let
+      makeService = attrs: recursiveUpdate {
+        path = [ pkgs.dd-agent pkgs.python pkgs.sysstat pkgs.procps pkgs.gohai ];
+        wantedBy = [ "multi-user.target" ];
+        serviceConfig = {
+          User = "datadog";
+          Group = "datadog";
+          Restart = "always";
+          RestartSec = 2;
+          PrivateTmp = true;
+        };
+        restartTriggers = [ pkgs.dd-agent ddConf diskConfig networkConfig postgresqlConfig nginxConfig mongoConfig jmxConfig processConfig ];
+      } attrs;
+    in {
+      dd-agent = makeService {
+        description = "Datadog agent monitor";
+        serviceConfig.ExecStart = "${pkgs.dd-agent}/bin/dd-agent foreground";
+      };
+
+      dogstatsd = makeService {
+        description = "Datadog statsd";
+        environment.TMPDIR = "/run/dogstatsd";
+        serviceConfig = {
+          ExecStart = "${pkgs.dd-agent}/bin/dogstatsd start";
+          Type = "forking";
+          PIDFile = "/run/dogstatsd/dogstatsd.pid";
+          RuntimeDirectory = "dogstatsd";
+        };
+      };
+
+      dd-jmxfetch = lib.mkIf (cfg.jmxConfig != null) {
+        description = "Datadog JMX Fetcher";
+        path = [ pkgs.dd-agent pkgs.python pkgs.sysstat pkgs.procps pkgs.jdk ];
+        serviceConfig.ExecStart = "${pkgs.dd-agent}/bin/dd-jmxfetch";
+      };
+    };
+
+    environment.etc = etcfiles;
+  };
+}

nixos/modules/services/monitoring/dd-agent/update-dd-agent-defaults

@@ -0,0 +1,9 @@
+#!/usr/bin/env bash
+dd=$(nix-build --no-out-link -A dd-agent ../../../..)
+echo '# Generated using update-dd-agent-default, please re-run after updating dd-agent. DO NOT EDIT MANUALLY.' > dd-agent-defaults.nix
+echo '[' >> dd-agent-defaults.nix
+echo '  "auto_conf"' >> dd-agent-defaults.nix
+for f in $(find $dd/agent/conf.d-system -maxdepth 1 -type f | grep -v '\.example' | sort); do
+  echo "  \"$(basename $f)\"" >> dd-agent-defaults.nix
+done
+echo ']' >> dd-agent-defaults.nix