1 files changed, 3 insertions, 7 deletions
diff --git a/nixos/modules/services/mail/exim.nix b/nixos/modules/services/mail/exim.nix
index 1d1258913b674..63d3fa54b23d5 100644
--- a/nixos/modules/services/mail/exim.nix
+++ b/nixos/modules/services/mail/exim.nix
@@ -1,7 +1,7 @@
 { config, lib, pkgs, ... }:
 
 let
-  inherit (lib) literalExpression mkIf mkOption singleton types;
+  inherit (lib) literalExpression mkIf mkOption singleton types mkPackageOption;
   inherit (pkgs) coreutils;
   cfg = config.services.exim;
 in
@@ -57,12 +57,8 @@ in
         '';
       };
 
-      package = mkOption {
-        type = types.package;
-        default = pkgs.exim;
-        defaultText = literalExpression "pkgs.exim";
-        description = lib.mdDoc ''
-          The Exim derivation to use.
+      package = mkPackageOption pkgs "exim" {
+        extraDescription = ''
           This can be used to enable features such as LDAP or PAM support.
         '';
       };