Merge pull request #313634 from onny/stalwart-systemd

stalwart-mail: package und use upstream systemd unit

nixos/modules/services/mail/stalwart-mail.nix

@@ -76,7 +76,9 @@ in {
       };
     };
 
-    systemd.services.stalwart-mail = {
+    systemd = {
+      packages = [ cfg.package ];
+      services.stalwart-mail = {
         wantedBy = [ "multi-user.target" ];
         after = [ "local-fs.target" "network.target" ];
 
@@ -87,22 +89,14 @@ in {
         '';
 
         serviceConfig = {
-        ExecStart =
-          "${cfg.package}/bin/stalwart-mail --config=${configFile}";
+          ExecStart = [
+            ""
+            "${cfg.package}/bin/stalwart-mail --config=${configFile}"
+          ];
 
-        # Base from template resources/systemd/stalwart-mail.service
-        Type = "simple";
-        LimitNOFILE = 65536;
-        KillMode = "process";
-        KillSignal = "SIGINT";
-        Restart = "on-failure";
-        RestartSec = 5;
           StandardOutput = "journal";
           StandardError = "journal";
-        SyslogIdentifier = "stalwart-mail";
 
-        User = "stalwart-mail";
-        Group = "stalwart-mail";
           StateDirectory = "stalwart-mail";
 
           # Bind standard privileged ports
@@ -134,6 +128,11 @@ in {
           SystemCallFilter = [ "@system-service" "~@privileged" ];
           UMask = "0077";
         };
+        unitConfig.ConditionPathExists = [
+          ""
+          "${configFile}"
+        ];
+      };
     };
 
     # Make admin commands available in the shell

pkgs/by-name/st/stalwart-mail/package.nix

@@ -62,6 +62,13 @@ rustPlatform.buildRustPackage {
     ROCKSDB_LIB_DIR = "${rocksdb}/lib";
   };
 
+  postInstall = ''
+    mkdir -p $out/lib/systemd/system
+
+    substitute resources/systemd/stalwart-mail.service $out/lib/systemd/system/stalwart-mail.service \
+      --replace "__PATH__" "$out"
+  '';
+
   # Tests require reading to /etc/resolv.conf
   doCheck = false;