nixos/apache-kafka: structured settings

- Use lazyAttrs (for config references) settings for main server.properties.
- Drop dangerous default for "log.dirs"
- Drop apache-kafka homedir; unused and confusing
- Support formatting kraft logdirs

1 files changed, 7 insertions, 5 deletions

diff --git a/nixos/tests/kafka.nix b/nixos/tests/kafka.nix
index 864253fd8c73b..8635cbd3ff632 100644
--- a/nixos/tests/kafka.nix
+++ b/nixos/tests/kafka.nix
@@ -23,12 +23,14 @@ let
       kafka = { ... }: {
         services.apache-kafka = {
           enable = true;
-          extraProperties = ''
-            offsets.topic.replication.factor = 1
-            zookeeper.session.timeout.ms = 600000
-          '';
+          settings = {
+            "offsets.topic.replication.factor" = 1;
+            "zookeeper.session.timeout.ms" = 600000;
+            "zookeeper.connect" = [ "zookeeper1:2181" ];
+            "log.dirs" = [ "/tmp/apache-kafka" ];
+          };
+
           package = kafkaPackage;
-          zookeeper = "zookeeper1:2181";
         };
 
         networking.firewall.allowedTCPPorts = [ 9092 ];