safeeyes: add module

This adds a basic module for Safe Eyes based off of the one in
Nixpkgs.

.github/CODEOWNERS

@@ -448,6 +448,8 @@ Makefile                                              @thiagokokada
 /modules/services/redshift-gammastep                  @rycee @petabyteboy @thiagokokada
 /tests/modules/redshift-gammastep                     @thiagokokada
 
+/modules/services/safeeyes                            @Rosuavio
+
 /modules/services/screen-locker.nix                   @jrobsonchase @rszamszur
 /tests/modules/services/screen-locker                 @jrobsonchase @rszamszur
 

modules/misc/news.nix

@@ -704,6 +704,14 @@ in
           A new module is available: 'xsession.windowManager.fluxbox'.
         '';
       }
+
+      {
+        time = "2022-09-25T21:00:05+00:00";
+        condition = hostPlatform.isLinux;
+        message = ''
+          A new module is available: 'services.safeeyes'.
+        '';
+      }
     ];
   };
 }

modules/modules.nix

@@ -256,6 +256,7 @@ let
     ./services/redshift-gammastep/gammastep.nix
     ./services/redshift-gammastep/redshift.nix
     ./services/rsibreak.nix
+    ./services/safeeyes.nix
     ./services/screen-locker.nix
     ./services/sctd.nix
     ./services/spotifyd.nix

modules/services/safeeyes.nix

@@ -0,0 +1,44 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+
+let
+
+  cfg = config.services.safeeyes;
+
+in {
+  meta.maintainers = [ hm.maintainers.rosuavio ];
+
+  options = {
+    services.safeeyes = {
+      enable = mkEnableOption "The Safe Eyes OSGI service";
+
+      package = mkPackageOption pkgs "safeeyes" { };
+    };
+  };
+
+  config = mkIf cfg.enable {
+    assertions = [
+      (hm.assertions.assertPlatform "services.safeeyes" pkgs platforms.linux)
+    ];
+
+    home.packages = [ cfg.package ];
+
+    systemd.user.services.safeeyes = {
+      Install.WantedBy = [ "graphical-session.target" ];
+
+      Unit = {
+        Description = "Safe Eyes";
+        PartOf = [ "graphical-session.target" ];
+        StartLimitIntervalSec = 350;
+        StartLimitBurst = 30;
+      };
+
+      Service = {
+        ExecStart = getExe pkgs.safeeyes;
+        Restart = "on-failure";
+        RestartSec = 3;
+      };
+    };
+  };
+}