diff --git a/nixos/modules/services/mail/offlineimap.nix b/nixos/modules/services/mail/offlineimap.nix
index f1517232c48d..6566a3cee11e 100644
--- a/nixos/modules/services/mail/offlineimap.nix
+++ b/nixos/modules/services/mail/offlineimap.nix
@@ -1,16 +1,13 @@
 { config, lib, pkgs, ... }:
-
-with lib;
-
 let
   cfg = config.services.offlineimap;
 in {
 
   options.services.offlineimap = {
-    enable = mkEnableOption "OfflineIMAP, a software to dispose your mailbox(es) as a local Maildir(s)";
+    enable = lib.mkEnableOption "OfflineIMAP, a software to dispose your mailbox(es) as a local Maildir(s)";
 
-    install = mkOption {
-      type = types.bool;
+    install = lib.mkOption {
+      type = lib.types.bool;
       default = false;
       description = ''
         Whether to install a user service for Offlineimap. Once
@@ -22,28 +19,28 @@ in {
       '';
     };
 
-    package = mkPackageOption pkgs "offlineimap" { };
+    package = lib.mkPackageOption pkgs "offlineimap" { };
 
-    path = mkOption {
-      type = types.listOf types.path;
+    path = lib.mkOption {
+      type = lib.types.listOf lib.types.path;
       default = [];
-      example = literalExpression "[ pkgs.pass pkgs.bash pkgs.notmuch ]";
+      example = lib.literalExpression "[ pkgs.pass pkgs.bash pkgs.notmuch ]";
       description = "List of derivations to put in Offlineimap's path.";
     };
 
-    onCalendar = mkOption {
-      type = types.str;
+    onCalendar = lib.mkOption {
+      type = lib.types.str;
       default = "*:0/3"; # every 3 minutes
       description = "How often is offlineimap started. Default is '*:0/3' meaning every 3 minutes. See systemd.time(7) for more information about the format.";
     };
 
-    timeoutStartSec = mkOption {
-      type = types.str;
+    timeoutStartSec = lib.mkOption {
+      type = lib.types.str;
       default = "120sec"; # Kill if still alive after 2 minutes
       description = "How long waiting for offlineimap before killing it. Default is '120sec' meaning every 2 minutes. See systemd.time(7) for more information about the format.";
     };
   };
-  config = mkIf (cfg.enable || cfg.install) {
+  config = lib.mkIf (cfg.enable || cfg.install) {
     systemd.user.services.offlineimap = {
       description = "Offlineimap: a software to dispose your mailbox(es) as a local Maildir(s)";
       serviceConfig = {
@@ -62,6 +59,6 @@ in {
         # start immediately after computer is started:
         Persistent = "true";
       };
-    } // optionalAttrs cfg.enable { wantedBy = [ "default.target" ]; };
+    } // lib.optionalAttrs cfg.enable { wantedBy = [ "default.target" ]; };
   };
 }