diff --git a/nixos/tests/containers-bridge.nix b/nixos/tests/containers-bridge.nix
index 1208aa8fced7..12fa67c8b015 100644
--- a/nixos/tests/containers-bridge.nix
+++ b/nixos/tests/containers-bridge.nix
@@ -1,5 +1,3 @@
-# Test for NixOS' container support.
-
 let
   hostIp = "192.168.0.1";
   containerIp = "192.168.0.100/24";
@@ -7,10 +5,10 @@ let
   containerIp6 = "fc00::2/7";
 in
 
-import ./make-test-python.nix ({ pkgs, ...} : {
+import ./make-test-python.nix ({ pkgs, lib, ... }: {
   name = "containers-bridge";
-  meta = with pkgs.lib.maintainers; {
-    maintainers = [ aristid aszlig eelco kampfschlaefer ];
+  meta = {
+    maintainers = with lib.maintainers; [ aristid aszlig eelco kampfschlaefer ];
   };
 
   machine =
diff --git a/nixos/tests/containers-custom-pkgs.nix b/nixos/tests/containers-custom-pkgs.nix
index 1412c32bfb5f..c050e49bc29d 100644
--- a/nixos/tests/containers-custom-pkgs.nix
+++ b/nixos/tests/containers-custom-pkgs.nix
@@ -1,4 +1,4 @@
-import ./make-test-python.nix ({ pkgs, lib, ...} : let
+import ./make-test-python.nix ({ pkgs, lib, ... }: let
 
   customPkgs = pkgs.appendOverlays [ (self: super: {
     hello = super.hello.overrideAttrs (old: {
@@ -8,8 +8,8 @@ import ./make-test-python.nix ({ pkgs, lib, ...} : let
 
 in {
   name = "containers-custom-pkgs";
-  meta = with lib.maintainers; {
-    maintainers = [ adisbladis earvstedt ];
+  meta = {
+    maintainers = with lib.maintainers; [ adisbladis earvstedt ];
   };
 
   machine = { config, ... }: {
diff --git a/nixos/tests/containers-ephemeral.nix b/nixos/tests/containers-ephemeral.nix
index 692554ac0ba2..fabf0593f23a 100644
--- a/nixos/tests/containers-ephemeral.nix
+++ b/nixos/tests/containers-ephemeral.nix
@@ -1,7 +1,8 @@
-# Test for NixOS' container support.
-
-import ./make-test-python.nix ({ pkgs, ...} : {
+import ./make-test-python.nix ({ pkgs, lib, ... }: {
   name = "containers-ephemeral";
+  meta = {
+    maintainers = with lib.maintainers; [ patryk27 ];
+  };
 
   machine = { pkgs, ... }: {
     virtualisation.memorySize = 768;
diff --git a/nixos/tests/containers-extra_veth.nix b/nixos/tests/containers-extra_veth.nix
index 212f3d0f46cb..cbbb25258325 100644
--- a/nixos/tests/containers-extra_veth.nix
+++ b/nixos/tests/containers-extra_veth.nix
@@ -1,9 +1,7 @@
-# Test for NixOS' container support.
-
-import ./make-test-python.nix ({ pkgs, ...} : {
+import ./make-test-python.nix ({ pkgs, lib, ... }: {
   name = "containers-extra_veth";
-  meta = with pkgs.lib.maintainers; {
-    maintainers = [ kampfschlaefer ];
+  meta = {
+    maintainers = with lib.maintainers; [ kampfschlaefer ];
   };
 
   machine =
diff --git a/nixos/tests/containers-hosts.nix b/nixos/tests/containers-hosts.nix
index 65a983c42a78..1f24ed1f3c2c 100644
--- a/nixos/tests/containers-hosts.nix
+++ b/nixos/tests/containers-hosts.nix
@@ -1,9 +1,7 @@
-# Test for NixOS' container support.
-
-import ./make-test-python.nix ({ pkgs, ...} : {
+import ./make-test-python.nix ({ pkgs, lib, ... }: {
   name = "containers-hosts";
-  meta = with pkgs.lib.maintainers; {
-    maintainers = [ montag451 ];
+  meta = {
+    maintainers = with lib.maintainers; [ montag451 ];
   };
 
   machine =
diff --git a/nixos/tests/containers-imperative.nix b/nixos/tests/containers-imperative.nix
index 393b4a5135dd..0ff0d3f95452 100644
--- a/nixos/tests/containers-imperative.nix
+++ b/nixos/tests/containers-imperative.nix
@@ -1,9 +1,7 @@
-# Test for NixOS' container support.
-
-import ./make-test-python.nix ({ pkgs, ...} : {
+import ./make-test-python.nix ({ pkgs, lib, ... }: {
   name = "containers-imperative";
-  meta = with pkgs.lib.maintainers; {
-    maintainers = [ aristid aszlig eelco kampfschlaefer ];
+  meta = {
+    maintainers = with lib.maintainers; [ aristid aszlig eelco kampfschlaefer ];
   };
 
   machine =
diff --git a/nixos/tests/containers-ip.nix b/nixos/tests/containers-ip.nix
index 0265ed92d41c..5abea2dbad9f 100644
--- a/nixos/tests/containers-ip.nix
+++ b/nixos/tests/containers-ip.nix
@@ -1,5 +1,3 @@
-# Test for NixOS' container support.
-
 let
   webserverFor = hostAddress: localAddress: {
     inherit hostAddress localAddress;
@@ -13,10 +11,10 @@ let
     };
   };
 
-in import ./make-test-python.nix ({ pkgs, ...} : {
+in import ./make-test-python.nix ({ pkgs, lib, ... }: {
   name = "containers-ipv4-ipv6";
-  meta = with pkgs.lib.maintainers; {
-    maintainers = [ aristid aszlig eelco kampfschlaefer ];
+  meta = {
+    maintainers = with lib.maintainers; [ aristid aszlig eelco kampfschlaefer ];
   };
 
   machine =
diff --git a/nixos/tests/containers-macvlans.nix b/nixos/tests/containers-macvlans.nix
index 9425252cb886..d0f41be8c125 100644
--- a/nixos/tests/containers-macvlans.nix
+++ b/nixos/tests/containers-macvlans.nix
@@ -1,15 +1,13 @@
-# Test for NixOS' container support.
-
 let
   # containers IP on VLAN 1
   containerIp1 = "192.168.1.253";
   containerIp2 = "192.168.1.254";
 in
 
-import ./make-test-python.nix ({ pkgs, ...} : {
+import ./make-test-python.nix ({ pkgs, lib, ... }: {
   name = "containers-macvlans";
-  meta = with pkgs.lib.maintainers; {
-    maintainers = [ montag451 ];
+  meta = {
+    maintainers = with lib.maintainers; [ montag451 ];
   };
 
   nodes = {
diff --git a/nixos/tests/containers-physical_interfaces.nix b/nixos/tests/containers-physical_interfaces.nix
index 0b55c3418edf..57bd0eedcc33 100644
--- a/nixos/tests/containers-physical_interfaces.nix
+++ b/nixos/tests/containers-physical_interfaces.nix
@@ -1,8 +1,7 @@
-
-import ./make-test-python.nix ({ pkgs, ...} : {
+import ./make-test-python.nix ({ pkgs, lib, ... }: {
   name = "containers-physical_interfaces";
-  meta = with pkgs.lib.maintainers; {
-    maintainers = [ kampfschlaefer ];
+  meta = {
+    maintainers = with lib.maintainers; [ kampfschlaefer ];
   };
 
   nodes = {
diff --git a/nixos/tests/containers-portforward.nix b/nixos/tests/containers-portforward.nix
index d0be3c7d43ec..221a6f50efd1 100644
--- a/nixos/tests/containers-portforward.nix
+++ b/nixos/tests/containers-portforward.nix
@@ -1,5 +1,3 @@
-# Test for NixOS' container support.
-
 let
   hostIp = "192.168.0.1";
   hostPort = 10080;
@@ -7,10 +5,10 @@ let
   containerPort = 80;
 in
 
-import ./make-test-python.nix ({ pkgs, ...} : {
+import ./make-test-python.nix ({ pkgs, lib, ... }: {
   name = "containers-portforward";
-  meta = with pkgs.lib.maintainers; {
-    maintainers = [ aristid aszlig eelco kampfschlaefer ianwookim ];
+  meta = {
+    maintainers = with lib.maintainers; [ aristid aszlig eelco kampfschlaefer ianwookim ];
   };
 
   machine =
diff --git a/nixos/tests/containers-reloadable.nix b/nixos/tests/containers-reloadable.nix
index 877246917672..876e62c1da9e 100644
--- a/nixos/tests/containers-reloadable.nix
+++ b/nixos/tests/containers-reloadable.nix
@@ -1,7 +1,6 @@
-import ./make-test-python.nix ({ pkgs, lib, ...} :
+import ./make-test-python.nix ({ pkgs, lib, ... }:
 let
   client_base = {
-
     containers.test1 = {
       autoStart = true;
       config = {
@@ -16,8 +15,8 @@ let
   };
 in {
   name = "containers-reloadable";
-  meta = with pkgs.lib.maintainers; {
-    maintainers = [ danbst ];
+  meta = {
+    maintainers = with lib.maintainers; [ danbst ];
   };
 
   nodes = {
diff --git a/nixos/tests/containers-restart_networking.nix b/nixos/tests/containers-restart_networking.nix
index b35552b5b191..e1ad8157b288 100644
--- a/nixos/tests/containers-restart_networking.nix
+++ b/nixos/tests/containers-restart_networking.nix
@@ -1,5 +1,3 @@
-# Test for NixOS' container support.
-
 let
   client_base = {
     networking.firewall.enable = false;
@@ -16,11 +14,11 @@ let
       };
     };
   };
-in import ./make-test-python.nix ({ pkgs, ...} :
+in import ./make-test-python.nix ({ pkgs, lib, ... }:
 {
   name = "containers-restart_networking";
-  meta = with pkgs.lib.maintainers; {
-    maintainers = [ kampfschlaefer ];
+  meta = {
+    maintainers = with lib.maintainers; [ kampfschlaefer ];
   };
 
   nodes = {
diff --git a/nixos/tests/containers-tmpfs.nix b/nixos/tests/containers-tmpfs.nix
index 7ebf0d02a240..fd9f9a252ca8 100644
--- a/nixos/tests/containers-tmpfs.nix
+++ b/nixos/tests/containers-tmpfs.nix
@@ -1,9 +1,7 @@
-# Test for NixOS' container support.
-
-import ./make-test-python.nix ({ pkgs, ...} : {
+import ./make-test-python.nix ({ pkgs, lib, ... }: {
   name = "containers-tmpfs";
-  meta = with pkgs.lib.maintainers; {
-    maintainers = [ ];
+  meta = {
+    maintainers = with lib.maintainers; [ patryk27 ];
   };
 
   machine =