diff --git a/tests/modules/files/executable.nix b/tests/modules/files/executable.nix
index b286c2b4..9ab8f359 100644
--- a/tests/modules/files/executable.nix
+++ b/tests/modules/files/executable.nix
@@ -1,17 +1,13 @@
-{ config, lib, ... }:
-
-with lib;
+{ ... }:
 
 {
-  config = {
-    home.file."executable" = {
-      text = "";
-      executable = true;
-    };
-
-    nmt.script = ''
-      assertFileExists home-files/executable
-      assertFileIsExecutable home-files/executable;
-    '';
+  home.file."executable" = {
+    text = "";
+    executable = true;
   };
+
+  nmt.script = ''
+    assertFileExists home-files/executable
+    assertFileIsExecutable home-files/executable;
+  '';
 }
diff --git a/tests/modules/files/hidden-source.nix b/tests/modules/files/hidden-source.nix
index 8169fedc..380a2cb2 100644
--- a/tests/modules/files/hidden-source.nix
+++ b/tests/modules/files/hidden-source.nix
@@ -1,19 +1,15 @@
-{ config, lib, ... }:
-
-with lib;
+{ ... }:
 
 {
-  config = {
-    home.file.".hidden".source = ./.hidden;
+  home.file.".hidden".source = ./.hidden;
 
-    nmt.script = ''
-      assertFileExists home-files/.hidden;
-      assertFileContent home-files/.hidden ${
-        builtins.path {
-          path = ./.hidden;
-          name = "expected";
-        }
+  nmt.script = ''
+    assertFileExists home-files/.hidden;
+    assertFileContent home-files/.hidden ${
+      builtins.path {
+        path = ./.hidden;
+        name = "expected";
       }
-    '';
-  };
+    }
+  '';
 }
diff --git a/tests/modules/files/out-of-store-symlink.nix b/tests/modules/files/out-of-store-symlink.nix
index af274aae..15a70fa7 100644
--- a/tests/modules/files/out-of-store-symlink.nix
+++ b/tests/modules/files/out-of-store-symlink.nix
@@ -1,29 +1,25 @@
-{ config, lib, ... }:
-
-with lib;
+{ config, ... }:
 
 let
 
   filePath = ./. + "/source with spaces!";
 
 in {
-  config = {
-    home.file."oos".source = config.lib.file.mkOutOfStoreSymlink filePath;
+  home.file."oos".source = config.lib.file.mkOutOfStoreSymlink filePath;
 
-    nmt.script = ''
-      assertLinkExists "home-files/oos"
+  nmt.script = ''
+    assertLinkExists "home-files/oos"
 
-      storePath="$(readlink $TESTED/home-files/oos)"
+    storePath="$(readlink $TESTED/home-files/oos)"
 
-      if [[ ! -L $storePath ]]; then
-        fail "Expected $storePath to be a symbolic link, but it was not."
-      fi
+    if [[ ! -L $storePath ]]; then
+      fail "Expected $storePath to be a symbolic link, but it was not."
+    fi
 
-      actual="$(readlink "$storePath")"
-      expected="${toString filePath}"
-      if [[ $actual != $expected ]]; then
-        fail "Symlink home-files/oos should point to $expected via the Nix store, but it actually points to $actual."
-      fi
-    '';
-  };
+    actual="$(readlink "$storePath")"
+    expected="${toString filePath}"
+    if [[ $actual != $expected ]]; then
+      fail "Symlink home-files/oos should point to $expected via the Nix store, but it actually points to $actual."
+    fi
+  '';
 }
diff --git a/tests/modules/files/source-with-spaces.nix b/tests/modules/files/source-with-spaces.nix
index 1d593c64..cd78664e 100644
--- a/tests/modules/files/source-with-spaces.nix
+++ b/tests/modules/files/source-with-spaces.nix
@@ -1,20 +1,16 @@
-{ config, lib, ... }:
-
-with lib;
+{ ... }:
 
 {
-  config = {
-    home.file."source with spaces!".source = ./. + "/source with spaces!";
+  home.file."source with spaces!".source = ./. + "/source with spaces!";
 
-    nmt.script = ''
-      assertFileExists 'home-files/source with spaces!';
-      assertFileContent 'home-files/source with spaces!' \
-        ${
-          builtins.path {
-            path = ./. + "/source with spaces!";
-            name = "source-with-spaces-expected";
-          }
+  nmt.script = ''
+    assertFileExists 'home-files/source with spaces!';
+    assertFileContent 'home-files/source with spaces!' \
+      ${
+        builtins.path {
+          path = ./. + "/source with spaces!";
+          name = "source-with-spaces-expected";
         }
-    '';
-  };
+      }
+  '';
 }
diff --git a/tests/modules/files/target-conflict.nix b/tests/modules/files/target-conflict.nix
index dbcee80a..9677cf9d 100644
--- a/tests/modules/files/target-conflict.nix
+++ b/tests/modules/files/target-conflict.nix
@@ -1,26 +1,24 @@
 { ... }:
 
 {
-  config = {
-    home.file = {
-      conflict1 = {
-        text = "";
-        target = "baz";
-      };
-      conflict2 = {
-        source = ./target-conflict.nix;
-        target = "baz";
-      };
+  home.file = {
+    conflict1 = {
+      text = "";
+      target = "baz";
+    };
+    conflict2 = {
+      source = ./target-conflict.nix;
+      target = "baz";
     };
-
-    test.asserts.assertions.expected = [''
-      Conflicting managed target files: baz
-
-      This may happen, for example, if you have a configuration similar to
-
-          home.file = {
-            conflict1 = { source = ./foo.nix; target = "baz"; };
-            conflict2 = { source = ./bar.nix; target = "baz"; };
-          }''];
   };
+
+  test.asserts.assertions.expected = [''
+    Conflicting managed target files: baz
+
+    This may happen, for example, if you have a configuration similar to
+
+        home.file = {
+          conflict1 = { source = ./foo.nix; target = "baz"; };
+          conflict2 = { source = ./bar.nix; target = "baz"; };
+        }''];
 }
diff --git a/tests/modules/files/target-with-shellvar.nix b/tests/modules/files/target-with-shellvar.nix
index c54946eb..59fc02fd 100644
--- a/tests/modules/files/target-with-shellvar.nix
+++ b/tests/modules/files/target-with-shellvar.nix
@@ -1,15 +1,11 @@
-{ config, lib, pkgs, ... }:
-
-with lib;
+{ ... }:
 
 {
-  config = {
-    home.file."$HOME/$FOO/bar baz".text = "blah";
+  home.file."$HOME/$FOO/bar baz".text = "blah";
 
-    nmt.script = ''
-      assertFileExists 'home-files/$HOME/$FOO/bar baz';
-      assertFileContent 'home-files/$HOME/$FOO/bar baz' \
-        ${pkgs.writeText "expected" "blah"}
-    '';
-  };
+  nmt.script = ''
+    assertFileExists 'home-files/$HOME/$FOO/bar baz';
+    assertFileContent 'home-files/$HOME/$FOO/bar baz' \
+      ${builtins.toFile "expected" "blah"}
+  '';
 }
diff --git a/tests/modules/files/text.nix b/tests/modules/files/text.nix
index 6fc9a26f..c09c56c4 100644
--- a/tests/modules/files/text.nix
+++ b/tests/modules/files/text.nix
@@ -1,18 +1,14 @@
-{ config, lib, ... }:
-
-with lib;
+{ ... }:
 
 {
-  config = {
-    home.file."using-text".text = ''
-      This is the
-      expected text.
-    '';
+  home.file."using-text".text = ''
+    This is the
+    expected text.
+  '';
 
-    nmt.script = ''
-      assertFileExists home-files/using-text
-      assertFileIsNotExecutable home-files/using-text
-      assertFileContent home-files/using-text ${./text-expected.txt}
-    '';
-  };
+  nmt.script = ''
+    assertFileExists home-files/using-text
+    assertFileIsNotExecutable home-files/using-text
+    assertFileContent home-files/using-text ${./text-expected.txt}
+  '';
 }
diff --git a/tests/modules/programs/borgmatic/basic-configuration.nix b/tests/modules/programs/borgmatic/basic-configuration.nix
index b9988d47..f27b84b8 100644
--- a/tests/modules/programs/borgmatic/basic-configuration.nix
+++ b/tests/modules/programs/borgmatic/basic-configuration.nix
@@ -1,116 +1,116 @@
 { config, pkgs, ... }:
 
 let
+
   boolToString = bool: if bool then "true" else "false";
   backups = config.programs.borgmatic.backups;
+
 in {
-  config = {
-    programs.borgmatic = {
-      enable = true;
-      backups = {
-        main = {
-          location = {
-            sourceDirectories = [ "/my-stuff-to-backup" ];
-            repositories = [ "/mnt/disk1" "/mnt/disk2" ];
-            extraConfig = {
-              one_file_system = true;
-              exclude_patterns = [ "*.swp" ];
-            };
+  programs.borgmatic = {
+    enable = true;
+    backups = {
+      main = {
+        location = {
+          sourceDirectories = [ "/my-stuff-to-backup" ];
+          repositories = [ "/mnt/disk1" "/mnt/disk2" ];
+          extraConfig = {
+            one_file_system = true;
+            exclude_patterns = [ "*.swp" ];
           };
+        };
 
-          storage = {
-            encryptionPasscommand = "fetch-the-password.sh";
-            extraConfig = { checkpoint_interval = 200; };
-          };
+        storage = {
+          encryptionPasscommand = "fetch-the-password.sh";
+          extraConfig = { checkpoint_interval = 200; };
+        };
 
-          retention = {
-            keepWithin = "14d";
-            keepSecondly = 12;
-            extraConfig = { prefix = "hostname"; };
-          };
+        retention = {
+          keepWithin = "14d";
+          keepSecondly = 12;
+          extraConfig = { prefix = "hostname"; };
+        };
 
-          consistency = {
-            checks = [
-              {
-                name = "repository";
-                frequency = "2 weeks";
-              }
-              {
-                name = "archives";
-                frequency = "4 weeks";
-              }
-            ];
+        consistency = {
+          checks = [
+            {
+              name = "repository";
+              frequency = "2 weeks";
+            }
+            {
+              name = "archives";
+              frequency = "4 weeks";
+            }
+          ];
 
-            extraConfig = { prefix = "hostname"; };
-          };
+          extraConfig = { prefix = "hostname"; };
         };
       };
     };
-
-    test.stubs.borgmatic = { };
-
-    nmt.script = ''
-      config_file=$TESTED/home-files/.config/borgmatic.d/main.yaml
-      assertFileExists $config_file
-
-      declare -A expectations
-
-      expectations[location.source_directories[0]]="${
-        builtins.elemAt backups.main.location.sourceDirectories 0
-      }"
-      expectations[location.repositories[0]]="${
-        builtins.elemAt backups.main.location.repositories 0
-      }"
-      expectations[location.repositories[1]]="${
-        builtins.elemAt backups.main.location.repositories 1
-      }"
-      expectations[location.one_file_system]="${
-        boolToString backups.main.location.extraConfig.one_file_system
-      }"
-      expectations[location.exclude_patterns[0]]="${
-        builtins.elemAt backups.main.location.extraConfig.exclude_patterns 0
-      }"
-
-      expectations[storage.encryption_passcommand]="${backups.main.storage.encryptionPasscommand}"
-      expectations[storage.checkpoint_interval]="${
-        toString backups.main.storage.extraConfig.checkpoint_interval
-      }"
-
-      expectations[retention.keep_within]="${backups.main.retention.keepWithin}"
-      expectations[retention.keep_secondly]="${
-        toString backups.main.retention.keepSecondly
-      }"
-      expectations[retention.prefix]="${backups.main.retention.extraConfig.prefix}"
-
-      expectations[consistency.checks[0].name]="${
-        (builtins.elemAt backups.main.consistency.checks 0).name
-      }"
-      expectations[consistency.checks[0].frequency]="${
-        (builtins.elemAt backups.main.consistency.checks 0).frequency
-      }"
-      expectations[consistency.checks[1].name]="${
-        (builtins.elemAt backups.main.consistency.checks 1).name
-      }"
-      expectations[consistency.checks[1].frequency]="${
-        (builtins.elemAt backups.main.consistency.checks 1).frequency
-      }"
-      expectations[consistency.prefix]="${backups.main.consistency.extraConfig.prefix}"
-
-      yq=${pkgs.yq-go}/bin/yq
-
-      for filter in "''${!expectations[@]}"; do
-        expected_value="''${expectations[$filter]}"
-        actual_value="$($yq ".$filter" $config_file)"
-
-        if [[ "$actual_value" != "$expected_value" ]]; then
-          fail "Expected '$filter' to be '$expected_value' but was '$actual_value'"
-        fi
-      done
-
-      one_file_system=$($yq ".location.one_file_system" $config_file)
-      if [[ $one_file_system != "true" ]]; then
-         fail "Expected one_file_system to be true but it was $one_file_system"
-      fi
-    '';
   };
+
+  test.stubs.borgmatic = { };
+
+  nmt.script = ''
+    config_file=$TESTED/home-files/.config/borgmatic.d/main.yaml
+    assertFileExists $config_file
+
+    declare -A expectations
+
+    expectations[location.source_directories[0]]="${
+      builtins.elemAt backups.main.location.sourceDirectories 0
+    }"
+    expectations[location.repositories[0]]="${
+      builtins.elemAt backups.main.location.repositories 0
+    }"
+    expectations[location.repositories[1]]="${
+      builtins.elemAt backups.main.location.repositories 1
+    }"
+    expectations[location.one_file_system]="${
+      boolToString backups.main.location.extraConfig.one_file_system
+    }"
+    expectations[location.exclude_patterns[0]]="${
+      builtins.elemAt backups.main.location.extraConfig.exclude_patterns 0
+    }"
+
+    expectations[storage.encryption_passcommand]="${backups.main.storage.encryptionPasscommand}"
+    expectations[storage.checkpoint_interval]="${
+      toString backups.main.storage.extraConfig.checkpoint_interval
+    }"
+
+    expectations[retention.keep_within]="${backups.main.retention.keepWithin}"
+    expectations[retention.keep_secondly]="${
+      toString backups.main.retention.keepSecondly
+    }"
+    expectations[retention.prefix]="${backups.main.retention.extraConfig.prefix}"
+
+    expectations[consistency.checks[0].name]="${
+      (builtins.elemAt backups.main.consistency.checks 0).name
+    }"
+    expectations[consistency.checks[0].frequency]="${
+      (builtins.elemAt backups.main.consistency.checks 0).frequency
+    }"
+    expectations[consistency.checks[1].name]="${
+      (builtins.elemAt backups.main.consistency.checks 1).name
+    }"
+    expectations[consistency.checks[1].frequency]="${
+      (builtins.elemAt backups.main.consistency.checks 1).frequency
+    }"
+    expectations[consistency.prefix]="${backups.main.consistency.extraConfig.prefix}"
+
+    yq=${pkgs.yq-go}/bin/yq
+
+    for filter in "''${!expectations[@]}"; do
+      expected_value="''${expectations[$filter]}"
+      actual_value="$($yq ".$filter" $config_file)"
+
+      if [[ "$actual_value" != "$expected_value" ]]; then
+        fail "Expected '$filter' to be '$expected_value' but was '$actual_value'"
+      fi
+    done
+
+    one_file_system=$($yq ".location.one_file_system" $config_file)
+    if [[ $one_file_system != "true" ]]; then
+       fail "Expected one_file_system to be true but it was $one_file_system"
+    fi
+  '';
 }
diff --git a/tests/modules/programs/borgmatic/exclude-hm-symlinks-nothing-else.nix b/tests/modules/programs/borgmatic/exclude-hm-symlinks-nothing-else.nix
index 3556cf5a..1d238b91 100644
--- a/tests/modules/programs/borgmatic/exclude-hm-symlinks-nothing-else.nix
+++ b/tests/modules/programs/borgmatic/exclude-hm-symlinks-nothing-else.nix
@@ -1,40 +1,40 @@
 { config, pkgs, ... }:
 
 let
+
   backups = config.programs.borgmatic.backups;
-  excludeFile = pkgs.writeText "excludeFile.txt" "/foo/bar";
+  excludeFile = builtins.toFile "excludeFile.txt" "/foo/bar";
+
 in {
-  config = {
-    programs.borgmatic = {
-      enable = true;
-      backups = {
-        main = {
-          location = {
-            sourceDirectories = [ "/my-stuff-to-backup" ];
-            repositories = [ "/mnt/disk1" ];
-            excludeHomeManagerSymlinks = true;
-          };
+  programs.borgmatic = {
+    enable = true;
+    backups = {
+      main = {
+        location = {
+          sourceDirectories = [ "/my-stuff-to-backup" ];
+          repositories = [ "/mnt/disk1" ];
+          excludeHomeManagerSymlinks = true;
         };
       };
     };
-
-    test.stubs.borgmatic = { };
-
-    nmt.script = ''
-      config_file=$TESTED/home-files/.config/borgmatic.d/main.yaml
-      assertFileExists $config_file
-
-      yq=${pkgs.yq-go}/bin/yq
-
-      hmExclusionsFile=$($yq '.location.exclude_from[0]' $config_file)
-      expected_content='/home/hm-user/.config/borgmatic.d/main.yaml'
-
-      grep --quiet "$expected_content" "$hmExclusionsFile"
-
-      if [[ $? -ne 0 ]]; then
-        echo "Expected to find $expected_content in file $hmExclusionsFile but didn't" >&2
-        exit 1
-      fi
-    '';
   };
+
+  test.stubs.borgmatic = { };
+
+  nmt.script = ''
+    config_file=$TESTED/home-files/.config/borgmatic.d/main.yaml
+    assertFileExists $config_file
+
+    yq=${pkgs.yq-go}/bin/yq
+
+    hmExclusionsFile=$($yq '.location.exclude_from[0]' $config_file)
+    expected_content='/home/hm-user/.config/borgmatic.d/main.yaml'
+
+    grep --quiet "$expected_content" "$hmExclusionsFile"
+
+    if [[ $? -ne 0 ]]; then
+      echo "Expected to find $expected_content in file $hmExclusionsFile but didn't" >&2
+      exit 1
+    fi
+  '';
 }
diff --git a/tests/modules/programs/borgmatic/exclude-hm-symlinks.nix b/tests/modules/programs/borgmatic/exclude-hm-symlinks.nix
index ba46e3ff..8635b28d 100644
--- a/tests/modules/programs/borgmatic/exclude-hm-symlinks.nix
+++ b/tests/modules/programs/borgmatic/exclude-hm-symlinks.nix
@@ -1,54 +1,54 @@
 { config, pkgs, ... }:
 
 let
+
   backups = config.programs.borgmatic.backups;
-  excludeFile = pkgs.writeText "excludeFile.txt" "/foo/bar";
+  excludeFile = builtins.toFile "excludeFile.txt" "/foo/bar";
+
 in {
-  config = {
-    programs.borgmatic = {
-      enable = true;
-      backups = {
-        main = {
-          location = {
-            sourceDirectories = [ "/my-stuff-to-backup" ];
-            repositories = [ "/mnt/disk1" ];
-            excludeHomeManagerSymlinks = true;
-            extraConfig = { exclude_from = [ (toString excludeFile) ]; };
-          };
+  programs.borgmatic = {
+    enable = true;
+    backups = {
+      main = {
+        location = {
+          sourceDirectories = [ "/my-stuff-to-backup" ];
+          repositories = [ "/mnt/disk1" ];
+          excludeHomeManagerSymlinks = true;
+          extraConfig = { exclude_from = [ (toString excludeFile) ]; };
         };
       };
     };
-
-    test.stubs.borgmatic = { };
-
-    nmt.script = ''
-      config_file=$TESTED/home-files/.config/borgmatic.d/main.yaml
-      assertFileExists $config_file
-
-      declare -A expectations
-
-      expectations[location.exclude_from[0]]="${excludeFile}"
-
-      yq=${pkgs.yq-go}/bin/yq
-
-      for filter in "''${!expectations[@]}"; do
-        expected_value="''${expectations[$filter]}"
-        actual_value="$($yq ".$filter" $config_file)"
-
-        if [[ "$actual_value" != "$expected_value" ]]; then
-          fail "Expected '$filter' to be '$expected_value' but was '$actual_value'"
-        fi
-      done
-
-      hmExclusionsFile=$($yq '.location.exclude_from[1]' $config_file)
-      expected_content='/home/hm-user/.config/borgmatic.d/main.yaml'
-
-      grep --quiet "$expected_content" "$hmExclusionsFile"
-
-      if [[ $? -ne 0 ]]; then
-        echo "Expected to find $expected_content in file $hmExclusionsFile but didn't" >&2
-        exit 1
-      fi
-    '';
   };
+
+  test.stubs.borgmatic = { };
+
+  nmt.script = ''
+    config_file=$TESTED/home-files/.config/borgmatic.d/main.yaml
+    assertFileExists $config_file
+
+    declare -A expectations
+
+    expectations[location.exclude_from[0]]="${excludeFile}"
+
+    yq=${pkgs.yq-go}/bin/yq
+
+    for filter in "''${!expectations[@]}"; do
+      expected_value="''${expectations[$filter]}"
+      actual_value="$($yq ".$filter" $config_file)"
+
+      if [[ "$actual_value" != "$expected_value" ]]; then
+        fail "Expected '$filter' to be '$expected_value' but was '$actual_value'"
+      fi
+    done
+
+    hmExclusionsFile=$($yq '.location.exclude_from[1]' $config_file)
+    expected_content='/home/hm-user/.config/borgmatic.d/main.yaml'
+
+    grep --quiet "$expected_content" "$hmExclusionsFile"
+
+    if [[ $? -ne 0 ]]; then
+      echo "Expected to find $expected_content in file $hmExclusionsFile but didn't" >&2
+      exit 1
+    fi
+  '';
 }
diff --git a/tests/modules/programs/borgmatic/include-hm-symlinks.nix b/tests/modules/programs/borgmatic/include-hm-symlinks.nix
index 1d6163bf..f4f5bfcd 100644
--- a/tests/modules/programs/borgmatic/include-hm-symlinks.nix
+++ b/tests/modules/programs/borgmatic/include-hm-symlinks.nix
@@ -1,45 +1,45 @@
 { config, pkgs, ... }:
 
 let
+
   backups = config.programs.borgmatic.backups;
-  excludeFile = pkgs.writeText "excludeFile.txt" "/foo/bar";
+  excludeFile = builtins.toFile "excludeFile.txt" "/foo/bar";
+
 in {
-  config = {
-    programs.borgmatic = {
-      enable = true;
-      backups = {
-        main = {
-          location = {
-            sourceDirectories = [ "/my-stuff-to-backup" ];
-            repositories = [ "/mnt/disk1" ];
-            excludeHomeManagerSymlinks = false;
-            extraConfig = { exclude_from = [ (toString excludeFile) ]; };
-          };
+  programs.borgmatic = {
+    enable = true;
+    backups = {
+      main = {
+        location = {
+          sourceDirectories = [ "/my-stuff-to-backup" ];
+          repositories = [ "/mnt/disk1" ];
+          excludeHomeManagerSymlinks = false;
+          extraConfig = { exclude_from = [ (toString excludeFile) ]; };
         };
       };
     };
-
-    test.stubs.borgmatic = { };
-
-    nmt.script = ''
-      config_file=$TESTED/home-files/.config/borgmatic.d/main.yaml
-      assertFileExists $config_file
-
-      declare -A expectations
-
-      expectations[location.exclude_from[0]]="${excludeFile}"
-
-      yq=${pkgs.yq-go}/bin/yq
-
-      for filter in "''${!expectations[@]}"; do
-        expected_value="''${expectations[$filter]}"
-        actual_value="$($yq ".$filter" $config_file)"
-
-        if [[ "$actual_value" != "$expected_value" ]]; then
-          fail "Expected '$filter' to be '$expected_value' but was '$actual_value'"
-        fi
-      done
-
-    '';
   };
+
+  test.stubs.borgmatic = { };
+
+  nmt.script = ''
+    config_file=$TESTED/home-files/.config/borgmatic.d/main.yaml
+    assertFileExists $config_file
+
+    declare -A expectations
+
+    expectations[location.exclude_from[0]]="${excludeFile}"
+
+    yq=${pkgs.yq-go}/bin/yq
+
+    for filter in "''${!expectations[@]}"; do
+      expected_value="''${expectations[$filter]}"
+      actual_value="$($yq ".$filter" $config_file)"
+
+      if [[ "$actual_value" != "$expected_value" ]]; then
+        fail "Expected '$filter' to be '$expected_value' but was '$actual_value'"
+      fi
+    done
+
+  '';
 }
diff --git a/tests/modules/services/barrier/basic-configuration.nix b/tests/modules/services/barrier/basic-configuration.nix
index d0834285..e7e39318 100644
--- a/tests/modules/services/barrier/basic-configuration.nix
+++ b/tests/modules/services/barrier/basic-configuration.nix
@@ -1,19 +1,17 @@
-{ config, pkgs, ... }:
+{ ... }:
 
 {
-  config = {
-    services.barrier.client = {
-      enable = true;
-      server = "testServer";
-    };
-
-    test.stubs.barrier = { };
-
-    nmt.script = ''
-      clientServiceFile=home-files/.config/systemd/user/barrierc.service
-
-      assertFileExists $clientServiceFile
-      assertFileRegex $clientServiceFile 'ExecStart=.*/bin/barrierc -f testServer'
-    '';
+  services.barrier.client = {
+    enable = true;
+    server = "testServer";
   };
+
+  test.stubs.barrier = { };
+
+  nmt.script = ''
+    clientServiceFile=home-files/.config/systemd/user/barrierc.service
+
+    assertFileExists $clientServiceFile
+    assertFileRegex $clientServiceFile 'ExecStart=.*/bin/barrierc -f testServer'
+  '';
 }
diff --git a/tests/modules/services/devilspie2/configuration.nix b/tests/modules/services/devilspie2/configuration.nix
index 2072d4d8..14bdc6f0 100644
--- a/tests/modules/services/devilspie2/configuration.nix
+++ b/tests/modules/services/devilspie2/configuration.nix
@@ -1,37 +1,37 @@
-{ config, pkgs, ... }: {
-  config = {
-    services.devilspie2 = {
-      enable = true;
+{ ... }:
 
-      config = ''
-        if (get_window_class() == "Gnome-terminal") then
-            make_always_on_top();
-        end
+{
+  services.devilspie2 = {
+    enable = true;
 
-        if string.match(get_window_name(), "LibreOffice Writer") then
-            maximize();
-        end
+    config = ''
+      if (get_window_class() == "Gnome-terminal") then
+          make_always_on_top();
+      end
 
-        if (get_window_class()=="Org.gnome.Nautilus") then
-           set_window_geometry(1600,300,900,700);
-        end
-      '';
-    };
+      if string.match(get_window_name(), "LibreOffice Writer") then
+          maximize();
+      end
 
-    test.stubs.devilspie2 = { };
-
-    nmt.script = ''
-      configlua=home-files/.config/devilspie2/config.lua
-
-      assertFileExists $configlua
-
-      assertFileContent $configlua ${./config.lua}
-
-      serviceFile=home-files/.config/systemd/user/devilspie2.service
-
-      assertFileExists $serviceFile
-
-      assertFileRegex $serviceFile 'ExecStart=.*/bin/devilspie2'
+      if (get_window_class()=="Org.gnome.Nautilus") then
+         set_window_geometry(1600,300,900,700);
+      end
     '';
   };
+
+  test.stubs.devilspie2 = { };
+
+  nmt.script = ''
+    configlua=home-files/.config/devilspie2/config.lua
+
+    assertFileExists $configlua
+
+    assertFileContent $configlua ${./config.lua}
+
+    serviceFile=home-files/.config/systemd/user/devilspie2.service
+
+    assertFileExists $serviceFile
+
+    assertFileRegex $serviceFile 'ExecStart=.*/bin/devilspie2'
+  '';
 }
diff --git a/tests/modules/services/emacs/emacs-default-editor.nix b/tests/modules/services/emacs/emacs-default-editor.nix
index 77897a5b..de91846c 100644
--- a/tests/modules/services/emacs/emacs-default-editor.nix
+++ b/tests/modules/services/emacs/emacs-default-editor.nix
@@ -1,4 +1,4 @@
-{ config, lib, pkgs, ... }:
+{ pkgs, ... }:
 
 {
   nixpkgs.overlays = [
diff --git a/tests/modules/services/emacs/emacs-service-27.nix b/tests/modules/services/emacs/emacs-service-27.nix
index 6bc99ced..76c33a5e 100644
--- a/tests/modules/services/emacs/emacs-service-27.nix
+++ b/tests/modules/services/emacs/emacs-service-27.nix
@@ -1,38 +1,37 @@
-{ config, lib, pkgs, ... }:
-
-with lib;
+{ lib, pkgs, ... }:
 
 {
-  config = {
-    nixpkgs.overlays = [
-      (self: super: rec {
-        emacs = pkgs.writeShellScriptBin "dummy-emacs-27.2" "" // {
-          outPath = "@emacs@";
-        };
-        emacsPackagesFor = _:
-          makeScope super.newScope (_: { emacsWithPackages = _: emacs; });
-      })
-    ];
+  nixpkgs.overlays = [
+    (self: super: rec {
+      emacs = pkgs.writeShellScriptBin "dummy-emacs-27.2" "" // {
+        outPath = "@emacs@";
+      };
+      emacsPackagesFor = _:
+        lib.makeScope super.newScope (_: { emacsWithPackages = _: emacs; });
+    })
+  ];
 
-    programs.emacs.enable = true;
-    services.emacs.enable = true;
-    services.emacs.client.enable = true;
-    services.emacs.extraOptions = [ "-f" "exwm-enable" ];
+  programs.emacs.enable = true;
+  services.emacs.enable = true;
+  services.emacs.client.enable = true;
+  services.emacs.extraOptions = [ "-f" "exwm-enable" ];
 
-    nmt.script = ''
-      assertPathNotExists home-files/.config/systemd/user/emacs.socket
-      assertFileExists home-files/.config/systemd/user/emacs.service
-      assertFileExists home-path/share/applications/emacsclient.desktop
+  nmt.script = ''
+    assertPathNotExists home-files/.config/systemd/user/emacs.socket
+    assertFileExists home-files/.config/systemd/user/emacs.service
+    assertFileExists home-path/share/applications/emacsclient.desktop
 
-      assertFileContent home-files/.config/systemd/user/emacs.service \
-                        ${
-                          pkgs.substituteAll {
-                            inherit (pkgs) runtimeShell;
-                            src = ./emacs-service-emacs.service;
-                          }
-                        }
-      assertFileContent home-path/share/applications/emacsclient.desktop \
-                        ${./emacs-27-emacsclient.desktop}
-    '';
-  };
+    assertFileContent \
+      home-files/.config/systemd/user/emacs.service \
+      ${
+        pkgs.substituteAll {
+          inherit (pkgs) runtimeShell;
+          src = ./emacs-service-emacs.service;
+        }
+      }
+
+    assertFileContent \
+      home-path/share/applications/emacsclient.desktop \
+      ${./emacs-27-emacsclient.desktop}
+  '';
 }
diff --git a/tests/modules/services/emacs/emacs-service-28-after-graphical-session-target.nix b/tests/modules/services/emacs/emacs-service-28-after-graphical-session-target.nix
index 237e9d14..edd232e4 100644
--- a/tests/modules/services/emacs/emacs-service-28-after-graphical-session-target.nix
+++ b/tests/modules/services/emacs/emacs-service-28-after-graphical-session-target.nix
@@ -1,40 +1,38 @@
-{ config, lib, pkgs, ... }:
-
-with lib;
+{ lib, pkgs, ... }:
 
 {
-  config = {
-    nixpkgs.overlays = [
-      (self: super: rec {
-        emacs = pkgs.writeShellScriptBin "dummy-emacs-28.2" "" // {
-          outPath = "@emacs@";
-        };
-        emacsPackagesFor = _:
-          makeScope super.newScope (_: { emacsWithPackages = _: emacs; });
-      })
-    ];
+  nixpkgs.overlays = [
+    (self: super: rec {
+      emacs = pkgs.writeShellScriptBin "dummy-emacs-28.2" "" // {
+        outPath = "@emacs@";
+      };
+      emacsPackagesFor = _:
+        lib.makeScope super.newScope (_: { emacsWithPackages = _: emacs; });
+    })
+  ];
 
-    programs.emacs.enable = true;
-    services.emacs.enable = true;
-    services.emacs.client.enable = true;
-    services.emacs.extraOptions = [ "-f" "exwm-enable" ];
-    services.emacs.startWithUserSession = "graphical";
+  programs.emacs.enable = true;
+  services.emacs.enable = true;
+  services.emacs.client.enable = true;
+  services.emacs.extraOptions = [ "-f" "exwm-enable" ];
+  services.emacs.startWithUserSession = "graphical";
 
-    nmt.script = ''
-      assertPathNotExists home-files/.config/systemd/user/emacs.socket
-      assertFileExists home-files/.config/systemd/user/emacs.service
-      assertFileExists home-path/share/applications/emacsclient.desktop
+  nmt.script = ''
+    assertPathNotExists home-files/.config/systemd/user/emacs.socket
+    assertFileExists home-files/.config/systemd/user/emacs.service
+    assertFileExists home-path/share/applications/emacsclient.desktop
 
-      assertFileContent home-files/.config/systemd/user/emacs.service \
-                        ${
-                          pkgs.substituteAll {
-                            inherit (pkgs) runtimeShell;
-                            src =
-                              ./emacs-service-emacs-after-graphical-session-target.service;
-                          }
-                        }
-      assertFileContent home-path/share/applications/emacsclient.desktop \
-                        ${./emacs-28-emacsclient.desktop}
-    '';
-  };
+    assertFileContent \
+      home-files/.config/systemd/user/emacs.service \
+      ${
+        pkgs.substituteAll {
+          inherit (pkgs) runtimeShell;
+          src = ./emacs-service-emacs-after-graphical-session-target.service;
+        }
+      }
+
+    assertFileContent \
+      home-path/share/applications/emacsclient.desktop \
+      ${./emacs-28-emacsclient.desktop}
+  '';
 }
diff --git a/tests/modules/services/emacs/emacs-service-28.nix b/tests/modules/services/emacs/emacs-service-28.nix
index febfe828..a5d9c87c 100644
--- a/tests/modules/services/emacs/emacs-service-28.nix
+++ b/tests/modules/services/emacs/emacs-service-28.nix
@@ -1,6 +1,4 @@
-{ config, lib, pkgs, ... }:
-
-with lib;
+{ lib, pkgs, ... }:
 
 {
   config = {
@@ -10,7 +8,7 @@ with lib;
           outPath = "@emacs@";
         };
         emacsPackagesFor = _:
-          makeScope super.newScope (_: { emacsWithPackages = _: emacs; });
+          lib.makeScope super.newScope (_: { emacsWithPackages = _: emacs; });
       })
     ];
 
@@ -24,15 +22,18 @@ with lib;
       assertFileExists home-files/.config/systemd/user/emacs.service
       assertFileExists home-path/share/applications/emacsclient.desktop
 
-      assertFileContent home-files/.config/systemd/user/emacs.service \
-                        ${
-                          pkgs.substituteAll {
-                            inherit (pkgs) runtimeShell;
-                            src = ./emacs-service-emacs.service;
-                          }
-                        }
-      assertFileContent home-path/share/applications/emacsclient.desktop \
-                        ${./emacs-28-emacsclient.desktop}
+      assertFileContent \
+        home-files/.config/systemd/user/emacs.service \
+        ${
+          pkgs.substituteAll {
+            inherit (pkgs) runtimeShell;
+            src = ./emacs-service-emacs.service;
+          }
+        }
+
+      assertFileContent \
+        home-path/share/applications/emacsclient.desktop \
+        ${./emacs-28-emacsclient.desktop}
     '';
   };
 }
diff --git a/tests/modules/services/emacs/emacs-socket-27.nix b/tests/modules/services/emacs/emacs-socket-27.nix
index b3b71e02..c7282bdb 100644
--- a/tests/modules/services/emacs/emacs-socket-27.nix
+++ b/tests/modules/services/emacs/emacs-socket-27.nix
@@ -1,10 +1,6 @@
-{ config, lib, pkgs, ... }:
+{ lib, pkgs, ... }:
 
-with lib;
-
-let
-
-in {
+{
   config = {
     nixpkgs.overlays = [
       (self: super: rec {
@@ -12,7 +8,7 @@ in {
           outPath = "@emacs@";
         };
         emacsPackagesFor = _:
-          makeScope super.newScope (_: { emacsWithPackages = _: emacs; });
+          lib.makeScope super.newScope (_: { emacsWithPackages = _: emacs; });
       })
     ];
 
@@ -27,17 +23,22 @@ in {
       assertFileExists home-files/.config/systemd/user/emacs.service
       assertFileExists home-path/share/applications/emacsclient.desktop
 
-      assertFileContent home-files/.config/systemd/user/emacs.socket \
-                        ${./emacs-socket-emacs.socket}
-      assertFileContent home-files/.config/systemd/user/emacs.service \
-                        ${
-                          pkgs.substituteAll {
-                            inherit (pkgs) runtimeShell coreutils;
-                            src = ./emacs-socket-emacs.service;
-                          }
-                        }
-      assertFileContent home-path/share/applications/emacsclient.desktop \
-                        ${./emacs-27-emacsclient.desktop}
+      assertFileContent \
+        home-files/.config/systemd/user/emacs.socket \
+        ${./emacs-socket-emacs.socket}
+
+      assertFileContent \
+        home-files/.config/systemd/user/emacs.service \
+        ${
+          pkgs.substituteAll {
+            inherit (pkgs) runtimeShell coreutils;
+            src = ./emacs-socket-emacs.service;
+          }
+        }
+
+      assertFileContent \
+        home-path/share/applications/emacsclient.desktop \
+        ${./emacs-27-emacsclient.desktop}
     '';
   };
 }
diff --git a/tests/modules/services/emacs/emacs-socket-28.nix b/tests/modules/services/emacs/emacs-socket-28.nix
index 91106665..c822f535 100644
--- a/tests/modules/services/emacs/emacs-socket-28.nix
+++ b/tests/modules/services/emacs/emacs-socket-28.nix
@@ -1,10 +1,6 @@
-{ config, lib, pkgs, ... }:
+{ lib, pkgs, ... }:
 
-with lib;
-
-let
-
-in {
+{
   config = {
     nixpkgs.overlays = [
       (self: super: rec {
@@ -12,7 +8,7 @@ in {
           outPath = "@emacs@";
         };
         emacsPackagesFor = _:
-          makeScope super.newScope (_: { emacsWithPackages = _: emacs; });
+          lib.makeScope super.newScope (_: { emacsWithPackages = _: emacs; });
       })
     ];
 
@@ -27,17 +23,22 @@ in {
       assertFileExists home-files/.config/systemd/user/emacs.service
       assertFileExists home-path/share/applications/emacsclient.desktop
 
-      assertFileContent home-files/.config/systemd/user/emacs.socket \
-                        ${./emacs-socket-emacs.socket}
-      assertFileContent home-files/.config/systemd/user/emacs.service \
-                        ${
-                          pkgs.substituteAll {
-                            inherit (pkgs) runtimeShell coreutils;
-                            src = ./emacs-socket-emacs.service;
-                          }
-                        }
-      assertFileContent home-path/share/applications/emacsclient.desktop \
-                        ${./emacs-28-emacsclient.desktop}
+      assertFileContent \
+        home-files/.config/systemd/user/emacs.socket \
+        ${./emacs-socket-emacs.socket}
+
+      assertFileContent \
+        home-files/.config/systemd/user/emacs.service \
+        ${
+          pkgs.substituteAll {
+            inherit (pkgs) runtimeShell coreutils;
+            src = ./emacs-socket-emacs.service;
+          }
+        }
+
+      assertFileContent \
+        home-path/share/applications/emacsclient.desktop \
+        ${./emacs-28-emacsclient.desktop}
     '';
   };
 }
diff --git a/tests/modules/services/emacs/emacs-socket-and-startWithUserSession.nix b/tests/modules/services/emacs/emacs-socket-and-startWithUserSession.nix
index 5f47089e..1f6d5673 100644
--- a/tests/modules/services/emacs/emacs-socket-and-startWithUserSession.nix
+++ b/tests/modules/services/emacs/emacs-socket-and-startWithUserSession.nix
@@ -1,7 +1,5 @@
 { lib, pkgs, ... }:
 
-with lib;
-
 {
   services.emacs = {
     enable = true;
@@ -15,7 +13,7 @@ with lib;
         outPath = "@emacs@";
       };
       emacsPackagesFor = _:
-        makeScope super.newScope (_: { emacsWithPackages = _: emacs; });
+        lib.makeScope super.newScope (_: { emacsWithPackages = _: emacs; });
     })
   ];
 
diff --git a/tests/modules/services/flameshot/empty-settings.nix b/tests/modules/services/flameshot/empty-settings.nix
index a5205660..2c700c49 100644
--- a/tests/modules/services/flameshot/empty-settings.nix
+++ b/tests/modules/services/flameshot/empty-settings.nix
@@ -1,13 +1,11 @@
 { ... }:
 
 {
-  config = {
-    services.flameshot = { enable = true; };
+  services.flameshot = { enable = true; };
 
-    test.stubs.flameshot = { };
+  test.stubs.flameshot = { };
 
-    nmt.script = ''
-      assertPathNotExists home-files/.config/flameshot/flameshot.ini
-    '';
-  };
+  nmt.script = ''
+    assertPathNotExists home-files/.config/flameshot/flameshot.ini
+  '';
 }
diff --git a/tests/modules/services/flameshot/example-settings.nix b/tests/modules/services/flameshot/example-settings.nix
index 213e86b3..d61b93e9 100644
--- a/tests/modules/services/flameshot/example-settings.nix
+++ b/tests/modules/services/flameshot/example-settings.nix
@@ -1,30 +1,28 @@
 { ... }:
 
 {
-  config = {
-    services.flameshot = {
-      enable = true;
+  services.flameshot = {
+    enable = true;
 
-      settings = {
-        General = {
-          disabledTrayIcon = true;
-          showStartupLaunchMessage = false;
-        };
+    settings = {
+      General = {
+        disabledTrayIcon = true;
+        showStartupLaunchMessage = false;
       };
     };
-
-    test.stubs.flameshot = { };
-
-    nmt.script = ''
-      assertFileContent \
-        home-files/.config/flameshot/flameshot.ini \
-        ${
-          builtins.toFile "expected.ini" ''
-            [General]
-            disabledTrayIcon=true
-            showStartupLaunchMessage=false
-          ''
-        }
-    '';
   };
+
+  test.stubs.flameshot = { };
+
+  nmt.script = ''
+    assertFileContent \
+      home-files/.config/flameshot/flameshot.ini \
+      ${
+        builtins.toFile "expected.ini" ''
+          [General]
+          disabledTrayIcon=true
+          showStartupLaunchMessage=false
+        ''
+      }
+  '';
 }
diff --git a/tests/modules/services/fluidsynth/service.nix b/tests/modules/services/fluidsynth/service.nix
index 7fbfa79c..ce0427b8 100644
--- a/tests/modules/services/fluidsynth/service.nix
+++ b/tests/modules/services/fluidsynth/service.nix
@@ -1,25 +1,25 @@
-{ config, pkgs, ... }: {
-  config = {
-    services.fluidsynth.enable = true;
-    services.fluidsynth.soundService = "pipewire-pulse";
-    services.fluidsynth.soundFont = "/path/to/soundFont";
-    services.fluidsynth.extraOptions = [ "--sample-rate 96000" ];
+{ ... }:
 
-    test.stubs.fluidsynth = { };
+{
+  services.fluidsynth.enable = true;
+  services.fluidsynth.soundService = "pipewire-pulse";
+  services.fluidsynth.soundFont = "/path/to/soundFont";
+  services.fluidsynth.extraOptions = [ "--sample-rate 96000" ];
 
-    nmt.script = ''
-      serviceFile=home-files/.config/systemd/user/fluidsynth.service
+  test.stubs.fluidsynth = { };
 
-      assertFileExists $serviceFile
+  nmt.script = ''
+    serviceFile=home-files/.config/systemd/user/fluidsynth.service
 
-      assertFileContains $serviceFile \
-        'ExecStart=@fluidsynth@/bin/fluidsynth -a pulseaudio -si --sample-rate 96000 /path/to/soundFont'
+    assertFileExists $serviceFile
 
-      assertFileContains $serviceFile \
-        'After=pipewire-pulse.service'
+    assertFileContains $serviceFile \
+      'ExecStart=@fluidsynth@/bin/fluidsynth -a pulseaudio -si --sample-rate 96000 /path/to/soundFont'
 
-      assertFileContains $serviceFile \
-        'BindsTo=pipewire-pulse.service'
-    '';
-  };
+    assertFileContains $serviceFile \
+      'After=pipewire-pulse.service'
+
+    assertFileContains $serviceFile \
+      'BindsTo=pipewire-pulse.service'
+  '';
 }
diff --git a/tests/modules/services/lieer/lieer-service.nix b/tests/modules/services/lieer/lieer-service.nix
index f11f1f6e..796afc07 100644
--- a/tests/modules/services/lieer/lieer-service.nix
+++ b/tests/modules/services/lieer/lieer-service.nix
@@ -1,34 +1,30 @@
-{ config, lib, pkgs, ... }:
-
-with lib;
+{ ... }:
 
 {
   imports = [ ../../accounts/email-test-accounts.nix ];
 
-  config = {
-    services.lieer.enable = true;
+  services.lieer.enable = true;
 
-    accounts.email.accounts = {
-      "hm@example.com" = {
-        flavor = "gmail.com";
-        lieer = {
-          enable = true;
-          sync.enable = true;
-        };
-        notmuch.enable = true;
+  accounts.email.accounts = {
+    "hm@example.com" = {
+      flavor = "gmail.com";
+      lieer = {
+        enable = true;
+        sync.enable = true;
       };
+      notmuch.enable = true;
     };
-
-    test.stubs.lieer = { };
-
-    nmt.script = ''
-      assertFileExists home-files/.config/systemd/user/lieer-hm-example-com.service
-      assertFileExists home-files/.config/systemd/user/lieer-hm-example-com.timer
-
-      assertFileContent home-files/.config/systemd/user/lieer-hm-example-com.service \
-                        ${./lieer-service-expected.service}
-      assertFileContent home-files/.config/systemd/user/lieer-hm-example-com.timer \
-                        ${./lieer-service-expected.timer}
-    '';
   };
+
+  test.stubs.lieer = { };
+
+  nmt.script = ''
+    assertFileExists home-files/.config/systemd/user/lieer-hm-example-com.service
+    assertFileExists home-files/.config/systemd/user/lieer-hm-example-com.timer
+
+    assertFileContent home-files/.config/systemd/user/lieer-hm-example-com.service \
+                      ${./lieer-service-expected.service}
+    assertFileContent home-files/.config/systemd/user/lieer-hm-example-com.timer \
+                      ${./lieer-service-expected.timer}
+  '';
 }
diff --git a/tests/modules/services/window-managers/bspwm/configuration.nix b/tests/modules/services/window-managers/bspwm/configuration.nix
index 49c82f6f..cd2bfa2e 100644
--- a/tests/modules/services/window-managers/bspwm/configuration.nix
+++ b/tests/modules/services/window-managers/bspwm/configuration.nix
@@ -1,47 +1,42 @@
-{ lib, pkgs, ... }:
-
-with lib;
+{ pkgs, ... }:
 
 {
-  config = {
-    xsession.windowManager.bspwm = {
-      enable = true;
-      monitors.focused =
-        [ "desktop 1" "d'esk top" ]; # pathological desktop names
-      alwaysResetDesktops = false;
-      settings = {
-        border_width = 2;
-        split_ratio = 0.52;
-        gapless_monocle = true;
-        external_rules_command = "/path/to/external rules command";
-        ignore_ewmh_fullscreen = [ "enter" "exit" ];
-      };
-      rules."*" = {
-        sticky = true;
-        center = false;
-        desktop = "d'esk top#next";
-        splitDir = "north";
-        border = null;
-        unknownRule = 42;
-      };
-      extraConfigEarly = ''
-        extra config early
-      '';
-      extraConfig = ''
-        extra config
-      '';
-      startupPrograms = [ "foo" "bar || qux" ];
+  xsession.windowManager.bspwm = {
+    enable = true;
+    monitors.focused = [ "desktop 1" "d'esk top" ]; # pathological desktop names
+    alwaysResetDesktops = false;
+    settings = {
+      border_width = 2;
+      split_ratio = 0.52;
+      gapless_monocle = true;
+      external_rules_command = "/path/to/external rules command";
+      ignore_ewmh_fullscreen = [ "enter" "exit" ];
     };
-
-    test.stubs.bspwm = { };
-
-    nmt.script = ''
-      bspwmrc=home-files/.config/bspwm/bspwmrc
-      assertFileExists "$bspwmrc"
-      assertFileIsExecutable "$bspwmrc"
-      assertFileContent "$bspwmrc" ${
-        pkgs.writeShellScript "bspwmrc-expected" (readFile ./bspwmrc)
-      }
+    rules."*" = {
+      sticky = true;
+      center = false;
+      desktop = "d'esk top#next";
+      splitDir = "north";
+      border = null;
+      unknownRule = 42;
+    };
+    extraConfigEarly = ''
+      extra config early
     '';
+    extraConfig = ''
+      extra config
+    '';
+    startupPrograms = [ "foo" "bar || qux" ];
   };
+
+  test.stubs.bspwm = { };
+
+  nmt.script = ''
+    bspwmrc=home-files/.config/bspwm/bspwmrc
+    assertFileExists "$bspwmrc"
+    assertFileIsExecutable "$bspwmrc"
+    assertFileContent "$bspwmrc" ${
+      pkgs.writeShellScript "bspwmrc-expected" (builtins.readFile ./bspwmrc)
+    }
+  '';
 }
diff --git a/tests/modules/services/window-managers/i3/i3-bar-focused-colors.nix b/tests/modules/services/window-managers/i3/i3-bar-focused-colors.nix
index 66b4ca87..abb4112a 100644
--- a/tests/modules/services/window-managers/i3/i3-bar-focused-colors.nix
+++ b/tests/modules/services/window-managers/i3/i3-bar-focused-colors.nix
@@ -1,4 +1,4 @@
-{ config, lib, ... }:
+{ ... }:
 
 {
   imports = [ ./i3-stubs.nix ];
diff --git a/tests/modules/services/window-managers/i3/i3-followmouse.nix b/tests/modules/services/window-managers/i3/i3-followmouse.nix
index 43e15cda..db84abd1 100644
--- a/tests/modules/services/window-managers/i3/i3-followmouse.nix
+++ b/tests/modules/services/window-managers/i3/i3-followmouse.nix
@@ -1,31 +1,27 @@
-{ config, lib, ... }:
-
-with lib;
+{ ... }:
 
 {
-  config = {
-    xsession.windowManager.i3 = {
-      enable = true;
+  xsession.windowManager.i3 = {
+    enable = true;
 
-      config.focus.followMouse = false;
-    };
-
-    nixpkgs.overlays = [
-      (self: super: {
-        dmenu = super.dmenu // { outPath = "@dmenu@"; };
-
-        i3 = super.writeScriptBin "i3" "" // { outPath = "@i3@"; };
-
-        i3-gaps = super.writeScriptBin "i3" "" // { outPath = "@i3-gaps@"; };
-
-        i3status = super.i3status // { outPath = "@i3status@"; };
-      })
-    ];
-
-    nmt.script = ''
-      assertFileExists home-files/.config/i3/config
-      assertFileContent home-files/.config/i3/config \
-        ${./i3-followmouse-expected.conf}
-    '';
+    config.focus.followMouse = false;
   };
+
+  nixpkgs.overlays = [
+    (self: super: {
+      dmenu = super.dmenu // { outPath = "@dmenu@"; };
+
+      i3 = super.writeScriptBin "i3" "" // { outPath = "@i3@"; };
+
+      i3-gaps = super.writeScriptBin "i3" "" // { outPath = "@i3-gaps@"; };
+
+      i3status = super.i3status // { outPath = "@i3status@"; };
+    })
+  ];
+
+  nmt.script = ''
+    assertFileExists home-files/.config/i3/config
+    assertFileContent home-files/.config/i3/config \
+      ${./i3-followmouse-expected.conf}
+  '';
 }
diff --git a/tests/modules/services/window-managers/i3/i3-fonts-deprecated.nix b/tests/modules/services/window-managers/i3/i3-fonts-deprecated.nix
index 7e4532e5..0216681f 100644
--- a/tests/modules/services/window-managers/i3/i3-fonts-deprecated.nix
+++ b/tests/modules/services/window-managers/i3/i3-fonts-deprecated.nix
@@ -1,4 +1,4 @@
-{ config, lib, ... }:
+{ ... }:
 
 {
   imports = [ ./i3-stubs.nix ];
diff --git a/tests/modules/services/window-managers/i3/i3-fonts.nix b/tests/modules/services/window-managers/i3/i3-fonts.nix
index 3618451f..decd9fcc 100644
--- a/tests/modules/services/window-managers/i3/i3-fonts.nix
+++ b/tests/modules/services/window-managers/i3/i3-fonts.nix
@@ -1,4 +1,4 @@
-{ config, lib, ... }:
+{ ... }:
 
 {
   imports = [ ./i3-stubs.nix ];
diff --git a/tests/modules/services/window-managers/i3/i3-null-config.nix b/tests/modules/services/window-managers/i3/i3-null-config.nix
index f321ad49..8433b0c7 100644
--- a/tests/modules/services/window-managers/i3/i3-null-config.nix
+++ b/tests/modules/services/window-managers/i3/i3-null-config.nix
@@ -1,4 +1,4 @@
-{ config, lib, pkgs, ... }:
+{ ... }:
 
 {
   imports = [ ./i3-stubs.nix ];
@@ -11,6 +11,6 @@
   nmt.script = ''
     assertFileExists home-files/.config/i3/config
     assertFileContent home-files/.config/i3/config \
-      ${pkgs.writeText "expected" ""}
+      ${builtins.toFile "expected" ""}
   '';
 }
diff --git a/tests/modules/services/window-managers/i3/i3-workspace-default.nix b/tests/modules/services/window-managers/i3/i3-workspace-default.nix
index 521b5f5d..733d619f 100644
--- a/tests/modules/services/window-managers/i3/i3-workspace-default.nix
+++ b/tests/modules/services/window-managers/i3/i3-workspace-default.nix
@@ -1,4 +1,4 @@
-{ config, lib, ... }:
+{ ... }:
 
 {
   imports = [ ./i3-stubs.nix ];
diff --git a/tests/modules/services/window-managers/i3/i3-workspace-output.nix b/tests/modules/services/window-managers/i3/i3-workspace-output.nix
index df4a2c78..8dcae4f8 100644
--- a/tests/modules/services/window-managers/i3/i3-workspace-output.nix
+++ b/tests/modules/services/window-managers/i3/i3-workspace-output.nix
@@ -1,4 +1,4 @@
-{ config, lib, ... }:
+{ ... }:
 
 let
   i3 = {
diff --git a/tests/modules/services/window-managers/sway/sway-followmouse-legacy.nix b/tests/modules/services/window-managers/sway/sway-followmouse-legacy.nix
index 52aa3cc4..03f64fc2 100644
--- a/tests/modules/services/window-managers/sway/sway-followmouse-legacy.nix
+++ b/tests/modules/services/window-managers/sway/sway-followmouse-legacy.nix
@@ -1,6 +1,4 @@
-{ config, lib, pkgs, ... }:
-
-with lib;
+{ config, pkgs, ... }:
 
 {
   imports = [ ./sway-stubs.nix ];
diff --git a/tests/modules/services/window-managers/sway/sway-followmouse.nix b/tests/modules/services/window-managers/sway/sway-followmouse.nix
index 788ad218..b8a2bc16 100644
--- a/tests/modules/services/window-managers/sway/sway-followmouse.nix
+++ b/tests/modules/services/window-managers/sway/sway-followmouse.nix
@@ -1,4 +1,4 @@
-{ config, lib, pkgs, ... }:
+{ config, pkgs, ... }:
 
 {
   imports = [ ./sway-stubs.nix ];
diff --git a/tests/modules/services/window-managers/sway/sway-modules.nix b/tests/modules/services/window-managers/sway/sway-modules.nix
index 567f7b5c..b8aa58c5 100644
--- a/tests/modules/services/window-managers/sway/sway-modules.nix
+++ b/tests/modules/services/window-managers/sway/sway-modules.nix
@@ -1,4 +1,4 @@
-{ config, lib, pkgs, ... }:
+{ config, pkgs, ... }:
 
 {
   imports = [ ./sway-stubs.nix ];
diff --git a/tests/modules/services/window-managers/sway/swaynag-empty-settings.nix b/tests/modules/services/window-managers/sway/swaynag-empty-settings.nix
index 0180852a..56782547 100644
--- a/tests/modules/services/window-managers/sway/swaynag-empty-settings.nix
+++ b/tests/modules/services/window-managers/sway/swaynag-empty-settings.nix
@@ -1,15 +1,13 @@
-{ config, lib, pkgs, ... }:
+{ ... }:
 
 {
-  config = {
-    wayland.windowManager.sway.swaynag = {
-      enable = true;
+  wayland.windowManager.sway.swaynag = {
+    enable = true;
 
-      settings = { };
-    };
-
-    nmt.script = ''
-      assertPathNotExists home-files/.config/swaynag
-    '';
+    settings = { };
   };
+
+  nmt.script = ''
+    assertPathNotExists home-files/.config/swaynag
+  '';
 }
diff --git a/tests/modules/systemd/services-disabled-for-root.nix b/tests/modules/systemd/services-disabled-for-root.nix
index f54ebd08..38d4f955 100644
--- a/tests/modules/systemd/services-disabled-for-root.nix
+++ b/tests/modules/systemd/services-disabled-for-root.nix
@@ -1,23 +1,19 @@
-{ config, lib, pkgs, ... }:
-
-with lib;
+{ lib, ... }:
 
 {
-  config = {
-    home.username = mkForce "root";
+  home.username = lib.mkForce "root";
 
-    systemd.user.services."test-service@" = {
-      Unit = { Description = "A basic test service"; };
+  systemd.user.services."test-service@" = {
+    Unit = { Description = "A basic test service"; };
 
-      Service = {
-        Environment = [ "VAR1=1" "VAR2=2" ];
-        ExecStart = ''/some/exec/start/command --with-arguments "%i"'';
-      };
+    Service = {
+      Environment = [ "VAR1=1" "VAR2=2" ];
+      ExecStart = ''/some/exec/start/command --with-arguments "%i"'';
     };
-
-    nmt.script = ''
-      serviceFile=home-files/.config/systemd/user/test-service@.service
-      assertPathNotExists $serviceFile
-    '';
   };
+
+  nmt.script = ''
+    serviceFile=home-files/.config/systemd/user/test-service@.service
+    assertPathNotExists $serviceFile
+  '';
 }
diff --git a/tests/modules/systemd/services.nix b/tests/modules/systemd/services.nix
index ce030f7c..439a03f2 100644
--- a/tests/modules/systemd/services.nix
+++ b/tests/modules/systemd/services.nix
@@ -5,33 +5,31 @@ let
     echo "Just a test"
   '';
 in {
-  config = {
-    systemd.user.services."test-service@" = {
-      Unit = { Description = "A basic test service"; };
+  systemd.user.services."test-service@" = {
+    Unit = { Description = "A basic test service"; };
 
-      Service = {
-        Environment = [ "VAR1=1" "VAR2=2" ];
-        ExecStartPre = drvScript;
-        ExecStart = ''/some/exec/start/command --with-arguments "%i"'';
-      };
+    Service = {
+      Environment = [ "VAR1=1" "VAR2=2" ];
+      ExecStartPre = drvScript;
+      ExecStart = ''/some/exec/start/command --with-arguments "%i"'';
     };
-
-    nmt.script = ''
-      serviceFile=home-files/.config/systemd/user/test-service@.service
-      assertFileExists $serviceFile
-      assertFileContent $serviceFile \
-        ${
-          pkgs.writeText "services-expected.conf" ''
-            [Service]
-            Environment=VAR1=1
-            Environment=VAR2=2
-            ExecStart=/some/exec/start/command --with-arguments "%i"
-            ExecStartPre=${drvScript}
-
-            [Unit]
-            Description=A basic test service
-          ''
-        }
-    '';
   };
+
+  nmt.script = ''
+    serviceFile=home-files/.config/systemd/user/test-service@.service
+    assertFileExists $serviceFile
+    assertFileContent $serviceFile \
+      ${
+        pkgs.writeText "services-expected.conf" ''
+          [Service]
+          Environment=VAR1=1
+          Environment=VAR2=2
+          ExecStart=/some/exec/start/command --with-arguments "%i"
+          ExecStartPre=${drvScript}
+
+          [Unit]
+          Description=A basic test service
+        ''
+      }
+  '';
 }
diff --git a/tests/modules/systemd/session-variables.nix b/tests/modules/systemd/session-variables.nix
index cbc348c4..d234767f 100644
--- a/tests/modules/systemd/session-variables.nix
+++ b/tests/modules/systemd/session-variables.nix
@@ -1,26 +1,24 @@
-{ config, lib, pkgs, ... }:
+{ pkgs, ... }:
 
 {
-  config = {
-    systemd.user.sessionVariables = {
-      V_int = 1;
-      V_str = "2";
-    };
-
-    nmt.script = ''
-      envFile=home-files/.config/environment.d/10-home-manager.conf
-      assertFileExists $envFile
-      assertFileContent $envFile ${
-        pkgs.writeText "expected" ''
-          LOCALE_ARCHIVE_2_27=${pkgs.glibcLocales}/lib/locale/locale-archive
-          V_int=1
-          V_str=2
-          XDG_CACHE_HOME=/home/hm-user/.cache
-          XDG_CONFIG_HOME=/home/hm-user/.config
-          XDG_DATA_HOME=/home/hm-user/.local/share
-          XDG_STATE_HOME=/home/hm-user/.local/state
-        ''
-      }
-    '';
+  systemd.user.sessionVariables = {
+    V_int = 1;
+    V_str = "2";
   };
+
+  nmt.script = ''
+    envFile=home-files/.config/environment.d/10-home-manager.conf
+    assertFileExists $envFile
+    assertFileContent $envFile ${
+      pkgs.writeText "expected" ''
+        LOCALE_ARCHIVE_2_27=${pkgs.glibcLocales}/lib/locale/locale-archive
+        V_int=1
+        V_str=2
+        XDG_CACHE_HOME=/home/hm-user/.cache
+        XDG_CONFIG_HOME=/home/hm-user/.config
+        XDG_DATA_HOME=/home/hm-user/.local/share
+        XDG_STATE_HOME=/home/hm-user/.local/state
+      ''
+    }
+  '';
 }
diff --git a/tests/modules/systemd/slices.nix b/tests/modules/systemd/slices.nix
index 0bb90504..68f6c70a 100644
--- a/tests/modules/systemd/slices.nix
+++ b/tests/modules/systemd/slices.nix
@@ -1,31 +1,27 @@
-{ config, lib, pkgs, ... }:
-
-with lib;
+{ ... }:
 
 {
-  config = {
-    systemd.user.slices.app-test = {
-      Unit = { Description = "Slice for a test app"; };
+  systemd.user.slices.app-test = {
+    Unit = { Description = "Slice for a test app"; };
 
-      Slice = {
-        MemoryHigh = "30%";
-        MemoryMax = "40%";
-      };
+    Slice = {
+      MemoryHigh = "30%";
+      MemoryMax = "40%";
     };
-
-    nmt.script = ''
-      sliceFile=home-files/.config/systemd/user/app-test.slice
-      assertFileExists $sliceFile
-      assertFileContent $sliceFile ${
-        builtins.toFile "app-test-expected.conf" ''
-          [Slice]
-          MemoryHigh=30%
-          MemoryMax=40%
-
-          [Unit]
-          Description=Slice for a test app
-        ''
-      }
-    '';
   };
+
+  nmt.script = ''
+    sliceFile=home-files/.config/systemd/user/app-test.slice
+    assertFileExists $sliceFile
+    assertFileContent $sliceFile ${
+      builtins.toFile "app-test-expected.conf" ''
+        [Slice]
+        MemoryHigh=30%
+        MemoryMax=40%
+
+        [Unit]
+        Description=Slice for a test app
+      ''
+    }
+  '';
 }
diff --git a/tests/modules/systemd/timers.nix b/tests/modules/systemd/timers.nix
index 1c0e2722..b9d167e3 100644
--- a/tests/modules/systemd/timers.nix
+++ b/tests/modules/systemd/timers.nix
@@ -1,25 +1,21 @@
-{ config, lib, pkgs, ... }:
-
-with lib;
+{ ... }:
 
 {
-  config = {
-    systemd.user.timers.test-timer = {
-      Unit = { Description = "A basic test timer"; };
+  systemd.user.timers.test-timer = {
+    Unit = { Description = "A basic test timer"; };
 
-      Timer = { OnUnitActiveSec = "1h 30m"; };
+    Timer = { OnUnitActiveSec = "1h 30m"; };
 
-      Install = { WantedBy = [ "timers.target" ]; };
-    };
-
-    nmt.script = ''
-      unitDir=home-files/.config/systemd/user
-      timerFile=$unitDir/test-timer.timer
-
-      assertFileExists $timerFile
-      assertFileContent $timerFile ${./timers-expected.conf}
-
-      assertFileExists $unitDir/timers.target.wants/test-timer.timer
-    '';
+    Install = { WantedBy = [ "timers.target" ]; };
   };
+
+  nmt.script = ''
+    unitDir=home-files/.config/systemd/user
+    timerFile=$unitDir/test-timer.timer
+
+    assertFileExists $timerFile
+    assertFileContent $timerFile ${./timers-expected.conf}
+
+    assertFileExists $unitDir/timers.target.wants/test-timer.timer
+  '';
 }