From b38dc8085c4ac2362853a696e1163e10e50189d1 Mon Sep 17 00:00:00 2001
From: Martin Weinelt <hexa@darmstadt.ccc.de>
Date: Sun, 6 Jul 2025 02:25:21 +0200
Subject: [PATCH] dovecot: add compat shim for dovecot unit name migration

In nixpkgs I renamed dovecot2 to dovecot and made dovecot2 an alias, so
adding the script to the alias does us no good.
---
 mail-server/dovecot.nix | 15 ++++++++-------
 1 file changed, 8 insertions(+), 7 deletions(-)

diff --git a/mail-server/dovecot.nix b/mail-server/dovecot.nix
index cdd46e7..757dba0 100644
--- a/mail-server/dovecot.nix
+++ b/mail-server/dovecot.nix
@@ -16,6 +16,7 @@
 
 {
   config,
+  options,
   pkgs,
   lib,
   ...
@@ -26,6 +27,8 @@ with (import ./common.nix { inherit config pkgs lib; });
 let
   cfg = config.mailserver;
 
+  dovecotUnitName = if lib.hasAttr "dovecot" options.systemd.services then "dovecot" else "dovecot2";
+
   passwdDir = "/run/dovecot2";
   passwdFile = "${passwdDir}/passwd";
   userdbFile = "${passwdDir}/userdb";
@@ -439,13 +442,11 @@ in
       '';
     };
 
-    systemd.services.dovecot2 = {
-      preStart =
-        ''
-          ${genPasswdScript}
-        ''
-        + (lib.optionalString cfg.ldap.enable setPwdInLdapConfFile);
-    };
+    systemd.services.${dovecotUnitName}.preStart =
+      ''
+        ${genPasswdScript}
+      ''
+      + (lib.optionalString cfg.ldap.enable setPwdInLdapConfFile);
 
     systemd.services.postfix.restartTriggers = [
       genPasswdScript