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/networking/supybot.nix

@@ -0,0 +1,163 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+
+let
+  cfg  = config.services.supybot;
+  isStateDirHome = hasPrefix "/home/" cfg.stateDir;
+  isStateDirVar = cfg.stateDir == "/var/lib/supybot";
+  pyEnv = pkgs.python3.withPackages (p: [ p.limnoria ] ++ (cfg.extraPackages p));
+in
+{
+  options = {
+
+    services.supybot = {
+
+      enable = mkOption {
+        type = types.bool;
+        default = false;
+        description = "Enable Supybot, an IRC bot (also known as Limnoria).";
+      };
+
+      stateDir = mkOption {
+        type = types.path;
+        default = if versionAtLeast config.system.stateVersion "20.09"
+          then "/var/lib/supybot"
+          else "/home/supybot";
+        defaultText = literalExpression "/var/lib/supybot";
+        description = "The root directory, logs and plugins are stored here";
+      };
+
+      configFile = mkOption {
+        type = types.path;
+        description = ''
+          Path to initial supybot config file. This can be generated by
+          running supybot-wizard.
+
+          Note: all paths should include the full path to the stateDir
+          directory (backup conf data logs logs/plugins plugins tmp web).
+        '';
+      };
+
+      plugins = mkOption {
+        type = types.attrsOf types.path;
+        default = {};
+        description = ''
+          Attribute set of additional plugins that will be symlinked to the
+          <filename>plugin</filename> subdirectory.
+
+          Please note that you still need to add the plugins to the config
+          file (or with <literal>!load</literal>) using their attribute name.
+        '';
+        example = literalExpression ''
+          let
+            plugins = pkgs.fetchzip {
+              url = "https://github.com/ProgVal/Supybot-plugins/archive/57c2450c.zip";
+              sha256 = "077snf84ibnva3sbpzdfpfma6hcdw7dflwnhg6pw7mgnf0nd84qd";
+            };
+          in
+          {
+            Wikipedia = "''${plugins}/Wikipedia";
+            Decide = ./supy-decide;
+          }
+        '';
+      };
+
+      extraPackages = mkOption {
+        type = types.functionTo (types.listOf types.package);
+        default = p: [];
+        defaultText = literalExpression "p: []";
+        description = ''
+          Extra Python packages available to supybot plugins. The
+          value must be a function which receives the attrset defined
+          in <varname>python3Packages</varname> as the sole argument.
+        '';
+        example = literalExpression "p: [ p.lxml p.requests ]";
+      };
+
+    };
+
+  };
+
+  config = mkIf cfg.enable {
+
+    environment.systemPackages = [ pkgs.python3Packages.limnoria ];
+
+    users.users.supybot = {
+      uid = config.ids.uids.supybot;
+      group = "supybot";
+      description = "Supybot IRC bot user";
+      home = cfg.stateDir;
+      isSystemUser = true;
+    };
+
+    users.groups.supybot = {
+      gid = config.ids.gids.supybot;
+    };
+
+    systemd.services.supybot = {
+      description = "Supybot, an IRC bot";
+      documentation = [ "https://limnoria.readthedocs.io/" ];
+      after = [ "network.target" ];
+      wantedBy = [ "multi-user.target" ];
+      preStart = ''
+        # This needs to be created afresh every time
+        rm -f '${cfg.stateDir}/supybot.cfg.bak'
+      '';
+
+      startLimitIntervalSec = 5 * 60;  # 5 min
+      startLimitBurst = 1;
+      serviceConfig = {
+        ExecStart = "${pyEnv}/bin/supybot ${cfg.stateDir}/supybot.cfg";
+        PIDFile = "/run/supybot.pid";
+        User = "supybot";
+        Group = "supybot";
+        UMask = "0007";
+        Restart = "on-abort";
+
+        NoNewPrivileges = true;
+        PrivateDevices = true;
+        PrivateMounts = true;
+        PrivateTmp = true;
+        ProtectControlGroups = true;
+        ProtectKernelModules = true;
+        ProtectKernelTunables = true;
+        RestrictAddressFamilies = [ "AF_INET" "AF_INET6" ];
+        RestrictSUIDSGID = true;
+        SystemCallArchitectures = "native";
+        RestrictNamespaces = true;
+        RestrictRealtime = true;
+        LockPersonality = true;
+        MemoryDenyWriteExecute = true;
+        RemoveIPC = true;
+        ProtectHostname = true;
+        CapabilityBoundingSet = "";
+        ProtectSystem = "full";
+      }
+      // optionalAttrs isStateDirVar {
+        StateDirectory = "supybot";
+        ProtectSystem = "strict";
+      }
+      // optionalAttrs (!isStateDirHome) {
+        ProtectHome = true;
+      };
+    };
+
+    systemd.tmpfiles.rules = [
+      "d '${cfg.stateDir}'              0700 supybot supybot - -"
+      "d '${cfg.stateDir}/backup'       0750 supybot supybot - -"
+      "d '${cfg.stateDir}/conf'         0750 supybot supybot - -"
+      "d '${cfg.stateDir}/data'         0750 supybot supybot - -"
+      "d '${cfg.stateDir}/plugins'      0750 supybot supybot - -"
+      "d '${cfg.stateDir}/logs'         0750 supybot supybot - -"
+      "d '${cfg.stateDir}/logs/plugins' 0750 supybot supybot - -"
+      "d '${cfg.stateDir}/tmp'          0750 supybot supybot - -"
+      "d '${cfg.stateDir}/web'          0750 supybot supybot - -"
+      "L '${cfg.stateDir}/supybot.cfg'  -    -       -       - ${cfg.configFile}"
+    ]
+    ++ (flip mapAttrsToList cfg.plugins (name: dest:
+      "L+ '${cfg.stateDir}/plugins/${name}' - - - - ${dest}"
+    ));
+
+  };
+}