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/bosun.nix

@@ -0,0 +1,165 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+
+let
+  cfg = config.services.bosun;
+
+  configFile = pkgs.writeText "bosun.conf" ''
+    ${optionalString (cfg.opentsdbHost !=null) "tsdbHost = ${cfg.opentsdbHost}"}
+    ${optionalString (cfg.influxHost !=null) "influxHost = ${cfg.influxHost}"}
+    httpListen = ${cfg.listenAddress}
+    stateFile = ${cfg.stateFile}
+    ledisDir = ${cfg.ledisDir}
+    checkFrequency = ${cfg.checkFrequency}
+
+    ${cfg.extraConfig}
+  '';
+
+in {
+
+  options = {
+
+    services.bosun = {
+
+      enable = mkOption {
+        type = types.bool;
+        default = false;
+        description = ''
+          Whether to run bosun.
+        '';
+      };
+
+      package = mkOption {
+        type = types.package;
+        default = pkgs.bosun;
+        defaultText = literalExpression "pkgs.bosun";
+        description = ''
+          bosun binary to use.
+        '';
+      };
+
+      user = mkOption {
+        type = types.str;
+        default = "bosun";
+        description = ''
+          User account under which bosun runs.
+        '';
+      };
+
+      group = mkOption {
+        type = types.str;
+        default = "bosun";
+        description = ''
+          Group account under which bosun runs.
+        '';
+      };
+
+      opentsdbHost = mkOption {
+        type = types.nullOr types.str;
+        default = "localhost:4242";
+        description = ''
+          Host and port of the OpenTSDB database that stores bosun data.
+          To disable opentsdb you can pass null as parameter.
+        '';
+      };
+
+      influxHost = mkOption {
+        type = types.nullOr types.str;
+        default = null;
+        example = "localhost:8086";
+        description = ''
+           Host and port of the influxdb database.
+        '';
+      };
+
+      listenAddress = mkOption {
+        type = types.str;
+        default = ":8070";
+        description = ''
+          The host address and port that bosun's web interface will listen on.
+        '';
+      };
+
+      stateFile = mkOption {
+        type = types.path;
+        default = "/var/lib/bosun/bosun.state";
+        description = ''
+          Path to bosun's state file.
+        '';
+      };
+
+      ledisDir = mkOption {
+        type = types.path;
+        default = "/var/lib/bosun/ledis_data";
+        description = ''
+          Path to bosun's ledis data dir
+        '';
+      };
+
+      checkFrequency = mkOption {
+        type = types.str;
+        default = "5m";
+        description = ''
+          Bosun's check frequency
+        '';
+      };
+
+      extraConfig = mkOption {
+        type = types.lines;
+        default = "";
+        description = ''
+          Extra configuration options for Bosun. You should describe your
+          desired templates, alerts, macros, etc through this configuration
+          option.
+
+          A detailed description of the supported syntax can be found at-spi2-atk
+          http://bosun.org/configuration.html
+        '';
+      };
+
+    };
+
+  };
+
+  config = mkIf cfg.enable {
+
+    systemd.services.bosun = {
+      description = "bosun metrics collector (part of Bosun)";
+      wantedBy = [ "multi-user.target" ];
+
+      preStart = ''
+        mkdir -p "$(dirname "${cfg.stateFile}")";
+        touch "${cfg.stateFile}"
+        touch "${cfg.stateFile}.tmp"
+
+        mkdir -p "${cfg.ledisDir}";
+
+        if [ "$(id -u)" = 0 ]; then
+          chown ${cfg.user}:${cfg.group} "${cfg.stateFile}"
+          chown ${cfg.user}:${cfg.group} "${cfg.stateFile}.tmp"
+          chown ${cfg.user}:${cfg.group} "${cfg.ledisDir}"
+        fi
+      '';
+
+      serviceConfig = {
+        PermissionsStartOnly = true;
+        User = cfg.user;
+        Group = cfg.group;
+        ExecStart = ''
+          ${cfg.package}/bin/bosun -c ${configFile}
+        '';
+      };
+    };
+
+    users.users.bosun = {
+      description = "bosun user";
+      group = "bosun";
+      uid = config.ids.uids.bosun;
+    };
+
+    users.groups.bosun.gid = config.ids.gids.bosun;
+
+  };
+
+}