diff --git a/nixos/tests/binary-cache.nix b/nixos/tests/binary-cache.nix
index 0809e59e5a115..bc1c6fb9a2671 100644
--- a/nixos/tests/binary-cache.nix
+++ b/nixos/tests/binary-cache.nix
@@ -1,16 +1,14 @@
-import ./make-test-python.nix ({ lib, ... }:
-
-with lib;
+import ./make-test-python.nix ({ lib, pkgs, ... }:
 
 {
   name = "binary-cache";
-  meta.maintainers = with maintainers; [ thomasjm ];
+  meta.maintainers = with lib.maintainers; [ thomasjm ];
 
   nodes.machine =
     { pkgs, ... }: {
       imports = [ ../modules/installer/cd-dvd/channel.nix ];
-      environment.systemPackages = with pkgs; [python3];
-      system.extraDependencies = with pkgs; [hello.inputDerivation];
+      environment.systemPackages = [ pkgs.python3 ];
+      system.extraDependencies = [ pkgs.hello.inputDerivation ];
       nix.extraOptions = ''
         experimental-features = nix-command
       '';
diff --git a/nixos/tests/buildkite-agents.nix b/nixos/tests/buildkite-agents.nix
index 2c5593323e873..a5abfdb5e2e5d 100644
--- a/nixos/tests/buildkite-agents.nix
+++ b/nixos/tests/buildkite-agents.nix
@@ -1,10 +1,8 @@
-import ./make-test-python.nix ({ pkgs, ... }:
+import ./make-test-python.nix ({ lib, pkgs, ... }:
 
 {
   name = "buildkite-agent";
-  meta = with pkgs.lib.maintainers; {
-    maintainers = [ flokli ];
-  };
+  meta.maintainers = with lib.maintainers; [ flokli ];
 
   nodes.machine = { pkgs, ... }: {
     services.buildkite-agents = {
diff --git a/nixos/tests/deepin.nix b/nixos/tests/deepin.nix
index acec27ca1c42a..7b2e2430f31c7 100644
--- a/nixos/tests/deepin.nix
+++ b/nixos/tests/deepin.nix
@@ -1,9 +1,7 @@
 import ./make-test-python.nix ({ pkgs, lib, ... }: {
   name = "deepin";
 
-  meta = with lib; {
-    maintainers = teams.deepin.members;
-  };
+  meta.maintainers = lib.teams.deepin.members;
 
   nodes.machine = { ... }: {
     imports = [
diff --git a/nixos/tests/initrd-network-ssh/default.nix b/nixos/tests/initrd-network-ssh/default.nix
index 017de6882081d..17b6c21ff1e99 100644
--- a/nixos/tests/initrd-network-ssh/default.nix
+++ b/nixos/tests/initrd-network-ssh/default.nix
@@ -1,12 +1,10 @@
-import ../make-test-python.nix ({ lib, ... }:
+import ../make-test-python.nix ({ lib, pkgs, ... }:
 
 {
   name = "initrd-network-ssh";
-  meta = with lib.maintainers; {
-    maintainers = [ willibutz emily ];
-  };
+  meta.maintainers = with lib.maintainers; [ willibutz emily ];
 
-  nodes = with lib; {
+  nodes = {
     server =
       { config, ... }:
       {
@@ -17,7 +15,7 @@ import ../make-test-python.nix ({ lib, ... }:
           enable = true;
           ssh = {
             enable = true;
-            authorizedKeys = [ (readFile ./id_ed25519.pub) ];
+            authorizedKeys = [ (lib.readFile ./id_ed25519.pub) ];
             port = 22;
             hostKeys = [ ./ssh_host_ed25519_key ];
           };
@@ -37,12 +35,12 @@ import ../make-test-python.nix ({ lib, ... }:
       {
         environment.etc = {
           knownHosts = {
-            text = concatStrings [
+            text = lib.concatStrings [
               "server,"
-              "${toString (head (splitString " " (
-                toString (elemAt (splitString "\n" config.networking.extraHosts) 2)
+              "${toString (lib.head (lib.splitString " " (
+                toString (lib.elemAt (lib.splitString "\n" config.networking.extraHosts) 2)
               )))} "
-              "${readFile ./ssh_host_ed25519_key.pub}"
+              "${lib.readFile ./ssh_host_ed25519_key.pub}"
             ];
           };
           sshKey = {
diff --git a/nixos/tests/osquery.nix b/nixos/tests/osquery.nix
index dc55fa82f8d19..9aa9820e50c52 100644
--- a/nixos/tests/osquery.nix
+++ b/nixos/tests/osquery.nix
@@ -1,7 +1,5 @@
 import ./make-test-python.nix ({ lib, pkgs, ... }:
 
-with lib;
-
 let
   config_refresh = "10";
   nullvalue = "NULL";
@@ -9,9 +7,7 @@ let
 in
 {
   name = "osquery";
-  meta = with maintainers; {
-    maintainers = [ znewman01 lewo ];
-  };
+  meta.maintainers = with lib.maintainers; [ znewman01 lewo ];
 
   nodes.machine = { config, pkgs, ... }: {
     services.osquery = {
diff --git a/nixos/tests/sftpgo.nix b/nixos/tests/sftpgo.nix
index ca55b9c962a07..8cd5675c1d4d4 100644
--- a/nixos/tests/sftpgo.nix
+++ b/nixos/tests/sftpgo.nix
@@ -12,8 +12,6 @@
 # would be a nice to have for the future.
 { pkgs, lib, ...  }:
 
-with lib;
-
 let
   inherit (import ./ssh-keys.nix pkgs) snakeOilPrivateKey snakeOilPublicKey;
 
@@ -54,7 +52,7 @@ let
       # inside the dataprovider they will be automatically created.
       # You have to create the folder on the filesystem yourself
       virtual_folders =
-        optional (isMemberOf config sharedFolderName user) {
+        lib.optional (lib.isMemberOf config sharedFolderName user) {
           name = sharedFolderName;
           mapped_path = "${config.services.sftpgo.dataDir}/${sharedFolderName}";
           virtual_path = "/${sharedFolderName}";
@@ -62,10 +60,10 @@ let
 
       # Defines the ACL on the virtual filesystem
       permissions =
-        recursiveUpdate {
+        lib.recursiveUpdate {
           "/" = [ "list" ];     # read-only top level directory
           "/private" = [ "*" ]; # private subdirectory, not shared with others
-        } (optionalAttrs (isMemberOf config "shared" user) {
+        } (lib.optionalAttrs (lib.isMemberOf config "shared" user) {
           "/shared" = [ "*" ];
         });
 
@@ -91,7 +89,7 @@ let
   # of users and folders to import to SFTPGo.
   loadDataJson = config: pkgs.writeText "users-and-folders.json" (builtins.toJSON {
     users =
-      mapAttrsToList (name: user: generateUserAttrSet config user) (normalUsers config);
+      lib.mapAttrsToList (name: user: lib.generateUserAttrSet config user) (normalUsers config);
 
     folders = [
       {
diff --git a/nixos/tests/systemd-initrd-networkd-ssh.nix b/nixos/tests/systemd-initrd-networkd-ssh.nix
index 30bd1950de242..6aaa6c828f7bd 100644
--- a/nixos/tests/systemd-initrd-networkd-ssh.nix
+++ b/nixos/tests/systemd-initrd-networkd-ssh.nix
@@ -2,15 +2,16 @@ import ./make-test-python.nix ({ lib, ... }: {
   name = "systemd-initrd-network-ssh";
   meta.maintainers = [ lib.maintainers.elvishjerricco ];
 
-  nodes = with lib; {
+  nodes = {
     server = { config, pkgs, ... }: {
-      environment.systemPackages = [pkgs.cryptsetup];
+      environment.systemPackages = [ pkgs.cryptsetup ];
       boot.loader.systemd-boot.enable = true;
       boot.loader.timeout = 0;
       virtualisation = {
         emptyDiskImages = [ 4096 ];
         useBootLoader = true;
-        # Booting off the encrypted disk requires an available init script from the Nix store
+        # Booting off the encrypted disk requires an available init script from
+        # the Nix store
         mountHostNixStore = true;
         useEFIBoot = true;
       };
@@ -26,7 +27,7 @@ import ./make-test-python.nix ({ lib, ... }: {
           enable = true;
           ssh = {
             enable = true;
-            authorizedKeys = [ (readFile ./initrd-network-ssh/id_ed25519.pub) ];
+            authorizedKeys = [ (lib.readFile ./initrd-network-ssh/id_ed25519.pub) ];
             port = 22;
             # Terrible hack so it works with useBootLoader
             hostKeys = [ { outPath = "${./initrd-network-ssh/ssh_host_ed25519_key}"; } ];
@@ -38,13 +39,13 @@ import ./make-test-python.nix ({ lib, ... }: {
     client = { config, ... }: {
       environment.etc = {
         knownHosts = {
-          text = concatStrings [
+          text = lib.concatStrings [
             "server,"
             "${
-              toString (head (splitString " " (toString
-                (elemAt (splitString "\n" config.networking.extraHosts) 2))))
+              toString (lib.head (lib.splitString " " (toString
+                (lib.elemAt (lib.splitString "\n" config.networking.extraHosts) 2))))
             } "
-            "${readFile ./initrd-network-ssh/ssh_host_ed25519_key.pub}"
+            "${lib.readFile ./initrd-network-ssh/ssh_host_ed25519_key.pub}"
           ];
         };
         sshKey = {