searx: add module

nixos/modules/misc/ids.nix

@@ -115,6 +115,7 @@
       nix-ssh = 104;
       dictd = 105;
       couchdb = 106;
+      searx = 107;
 
       # When adding a uid, make sure it doesn't match an existing gid.
 
@@ -208,6 +209,7 @@
       keys = 96;
       dictd = 105;
       couchdb = 106;
+      searx = 107;
 
       # When adding a gid, make sure it doesn't match an existing uid.
 

nixos/modules/module-list.nix

@@ -189,6 +189,7 @@
   ./services/networking/rdnssd.nix
   ./services/networking/rpcbind.nix
   ./services/networking/sabnzbd.nix
+  ./services/networking/searx.nix
   ./services/networking/supybot.nix
   ./services/networking/ssh/lshd.nix
   ./services/networking/ssh/sshd.nix

nixos/modules/services/networking/searx.nix

@@ -0,0 +1,76 @@
+{ config, pkgs, ... }:
+
+with pkgs.lib;
+
+let
+
+  cfg = config.services.searx;
+
+  configFile = cfg.configFile;
+
+in
+
+{
+
+  ###### interface
+
+  options = {
+
+    services.searx = {
+
+      enable = mkOption {
+        default = false;
+        description = "
+          Whether to enable the Searx server.
+        ";
+      };
+
+      configFile = mkOption {
+        default = "";
+        description = "
+          The path of the Searx server configuration file. If no file
+          is specified, a default file is used (default config file has
+          debug mode enabled).
+        ";
+      };
+
+    };
+
+  };
+
+
+  ###### implementation
+
+  config = mkIf config.services.searx.enable {
+
+    users.extraUsers.searx =
+      { uid = config.ids.uids.searx;
+        description = "Searx user";
+        createHome = true;
+        home = "/var/lib/searx";
+      };
+
+    users.extraGroups.searx =
+      { gid = config.ids.gids.searx;
+      };
+
+    systemd.services.searx =
+      {
+        description = "Searx server, the meta search engine.";
+        after = [ "network.target" ];
+        wantedBy = [ "multi-user.target" ];
+        serviceConfig.User = "searx";
+        script = ''
+            if [ -z "${configFile}" ]; then
+              exec ${pkgs.pythonPackages.searx}/bin/searx-run
+            else
+              SEARX_SETTINGS_PATH="${configFile}" exec ${pkgs.pythonPackages.searx}/bin/searx-run
+            fi
+        '';
+      };
+
+    environment.systemPackages = [ pkgs.pythonPackages.searx ];
+
+  };
+
+}