tests: rework derivation stubbing

Instead of having to manually stub packages that should not be
downloaded we instead automatically stub all packages (except a small
list of whitelisted ones). Tests can re-introduce the real package by
using the `realPkgs` module argument.

tests/default.nix

@@ -9,31 +9,105 @@ let
     sha256 = "0qhn7nnwdwzh910ss78ga2d00v42b0lspfd7ybl61mpfgz3lmdcj";
   };
 
+  # Recursively replace each derivation in the given attribute set with the same
+  # derivation but with the `outPath` attribute set to the string
+  # `"@package-name@"`. This allows the tests to refer to derivations through
+  # their values without establishing an actual dependency on the derivation
+  # output.
+  scrubDerivations = attrs:
+    let
+      scrubDerivation = name: value:
+        let
+          scrubbedValue = scrubDerivations value;
+
+          newDrvAttrs = {
+            buildScript = abort "no build allowed";
+
+            outPath = builtins.traceVerbose ("${name} - got out path")
+              "@${lib.getName value}@";
+
+            # Prevent getOutput from descending into outputs
+            outputSpecified = true;
+
+            # Allow the original package to be used in derivation inputs
+            __spliced = {
+              buildHost = value;
+              hostTarget = value;
+            };
+          };
+        in if lib.isAttrs value then
+          if lib.isDerivation value then
+            scrubbedValue // newDrvAttrs
+          else
+            scrubbedValue
+        else
+          value;
+    in lib.mapAttrs scrubDerivation attrs;
+
+  # Globally unscrub a few selected packages that are used by a wide selection of tests.
+  whitelist = let
+    inner = self: super: {
+      inherit (pkgs)
+        coreutils jq desktop-file-utils diffutils findutils glibcLocales gettext
+        gnugrep gnused shared-mime-info emptyDirectory
+        # Needed by pretty much all tests that have anything to do with fish.
+        babelfish fish;
+
+      xorg =
+        super.xorg.overrideScope (self: super: { inherit (pkgs.xorg) lndir; });
+    };
+
+    outer = self: super:
+      inner self super // {
+        buildPackages = super.buildPackages.extend inner;
+      };
+  in outer;
+
+  scrubbedPkgs =
+    let rawScrubbedPkgs = lib.makeExtensible (final: scrubDerivations pkgs);
+    in builtins.traceVerbose "eval scrubbed nixpkgs"
+    (rawScrubbedPkgs.extend whitelist);
+
   modules = import ../modules/modules.nix {
     inherit lib pkgs;
     check = false;
-  } ++ [{
+  } ++ [
-    # Bypass <nixpkgs> reference inside modules/modules.nix to make the test
+    ({ config, ... }: {
-    # suite more pure.
+      _module.args = {
-    _module.args.pkgsPath = pkgs.path;
+        # Prevent the nixpkgs module from working. We want to minimize the number
+        # of evaluations of Nixpkgs.
+        pkgsPath = abort "pkgs path is unavailable in tests";
+        realPkgs = pkgs;
+        pkgs = let
+          overlays = config.test.stubOverlays ++ lib.optionals
+            (config.nixpkgs.overlays != null && config.nixpkgs.overlays != [ ])
+            config.nixpkgs.overlays;
+          stubbedPkgs = if overlays == [ ] then
+            scrubbedPkgs
+          else
+            builtins.traceVerbose "eval overlayed nixpkgs"
+            (lib.foldr (o: p: p.extend o) scrubbedPkgs overlays);
+        in lib.mkImageMediaOverride stubbedPkgs;
+      };
 
-    # Fix impurities. Without these some of the user's environment
+      # Fix impurities. Without these some of the user's environment
-    # will leak into the tests through `builtins.getEnv`.
+      # will leak into the tests through `builtins.getEnv`.
-    xdg.enable = true;
+      xdg.enable = true;
-    home = {
+      home = {
-      username = "hm-user";
+        username = "hm-user";
-      homeDirectory = "/home/hm-user";
+        homeDirectory = "/home/hm-user";
-      stateVersion = lib.mkDefault "18.09";
+        stateVersion = lib.mkDefault "18.09";
-    };
+      };
 
-    # Avoid including documentation since this will cause
+      # Avoid including documentation since this will cause
-    # unnecessary rebuilds of the tests.
+      # unnecessary rebuilds of the tests.
-    manual.manpages.enable = lib.mkDefault false;
+      manual.manpages.enable = lib.mkDefault false;
 
-    imports = [ ./asserts.nix ./big-test.nix ./stubs.nix ];
+      imports = [ ./asserts.nix ./big-test.nix ./stubs.nix ];
 
-    test.enableBig = enableBig;
+      test.enableBig = enableBig;
-  }];
+    })
+  ];
 
   isDarwin = pkgs.stdenv.hostPlatform.isDarwin;
   isLinux = pkgs.stdenv.hostPlatform.isLinux;

tests/modules/config/i18n/default.nix

@@ -15,24 +15,23 @@
     };
   };
 
-  i18n-custom-locales = { pkgs, ... }: {
+  i18n-custom-locales = { config, pkgs, ... }: {
-    config = let stub = pkgs.glibcLocalesCustom;
+    config = let
-    in {
+      customGlibcLocales = pkgs.glibcLocales.override {
-      test.stubs.glibcLocalesCustom = {
+        allLocales = false;
-        inherit (pkgs.glibcLocales) version;
+        locales = [ "en_US.UTF-8/UTF-8" ];
-        outPath = null; # we need a real path for this stub
       };
-
+    in {
-      i18n.glibcLocales = stub;
+      i18n.glibcLocales = customGlibcLocales;
 
       nmt.script = ''
         hmEnvFile=home-path/etc/profile.d/hm-session-vars.sh
         assertFileExists $hmEnvFile
-        assertFileRegex $hmEnvFile 'LOCALE_ARCHIVE_.*${stub}'
+        assertFileRegex $hmEnvFile 'LOCALE_ARCHIVE_.*${customGlibcLocales}'
 
         envFile=home-files/.config/environment.d/10-home-manager.conf
         assertFileExists $envFile
-        assertFileRegex $envFile 'LOCALE_ARCHIVE_.*${stub}'
+        assertFileRegex $envFile 'LOCALE_ARCHIVE_.*${customGlibcLocales}'
       '';
     };
   };

tests/modules/i18n/input-method/fcitx5-configuration.nix

@@ -1,13 +1,13 @@
-{ config, pkgs, ... }:
+{ config, lib, realPkgs, ... }:
-
-{
-  imports = [ ./fcitx5-stubs.nix ];
 
+lib.mkIf config.test.enableBig {
   i18n.inputMethod = {
     enabled = "fcitx5";
     fcitx5.waylandFrontend = true;
   };
 
+  _module.args.pkgs = lib.mkForce realPkgs;
+
   nmt.script = ''
     assertFileExists home-files/.config/systemd/user/fcitx5-daemon.service
     assertFileNotRegex home-path/etc/profile.d/hm-session-vars.sh 'GTK_IM_MODULE'

tests/modules/i18n/input-method/fcitx5-stubs.nix

@@ -1,57 +0,0 @@
-{
-  test.stubs = {
-    fcitx5 = {
-      version = "0";
-      outPath = null;
-      buildScript = ''
-        mkdir -p $out/bin $out/share/applications $out/share/dbus-1/services $out/etc/xdg/autostart
-        touch $out/bin/fcitx5 \
-              $out/bin/fcitx5-config-qt \
-              $out/share/applications/org.fcitx.Fcitx5.desktop \
-              $out/share/dbus-1/services/org.fcitx.Fcitx5.service \
-              $out/etc/xdg/autostart/org.fcitx.Fcitx5.desktop
-        # The grep usage of fcitx5-with-addons expects one of the files to match with the fcitx5.out
-        # https://github.com/NixOS/nixpkgs/blob/d2eb4be48705289791428c07aca8ff654c1422ba/pkgs/tools/inputmethods/fcitx5/with-addons.nix#L40-L44
-        echo $out >> $out/etc/xdg/autostart/org.fcitx.Fcitx5.desktop
-        chmod +x $out/bin/fcitx5 \
-                 $out/bin/fcitx5-config-qt
-      '';
-    };
-    fcitx5-lua = { outPath = null; };
-    fcitx5-gtk = { outPath = null; };
-
-    gtk2 = {
-      buildScript = ''
-        mkdir -p $out/bin
-        echo '#/usr/bin/env bash' > $out/bin/gtk-query-immodules-2.0
-        chmod +x $out/bin/*
-      '';
-    };
-    gtk3 = {
-      buildScript = ''
-        mkdir -p $out/bin
-        echo '#/usr/bin/env bash' > $out/bin/gtk-query-immodules-3.0
-        chmod +x $out/bin/*
-      '';
-    };
-  };
-
-  nixpkgs.overlays = [
-    (final: prev: {
-      libsForQt5 = prev.libsForQt5.overrideScope (qt5final: qt5prev: {
-        fcitx5-chinese-addons = prev.mkStubPackage { outPath = null; };
-        fcitx5-configtool = prev.mkStubPackage { outPath = null; };
-        fcitx5-qt = prev.mkStubPackage { outPath = null; };
-
-        fcitx5-with-addons = qt5prev.fcitx5-with-addons.override {
-          inherit (final) libsForQt5 qt6Packages;
-        };
-      });
-
-      qt6Packages = prev.qt6Packages.overrideScope (qt6final: qt6prev: {
-        fcitx5-qt = prev.mkStubPackage { outPath = null; };
-      });
-
-    })
-  ];
-}

tests/modules/i18n/input-method/kime-configuration.nix

@@ -1,5 +1,3 @@
-{ config, pkgs, ... }:
-
 let
 
   kimeConfig = ''

tests/modules/misc/debug/default.nix

@@ -1,8 +1,8 @@
 {
-  debug = { pkgs, config, lib, ... }:
+  debug = { realPkgs, config, lib, ... }:
     lib.mkIf config.test.enableBig {
       home.enableDebugInfo = true;
-      home.packages = with pkgs; [ curl gdb ];
+      home.packages = with realPkgs; [ curl gdb ];
 
       nmt.script = ''
         [ -L $TESTED/home-path/lib/debug/curl ] \

tests/modules/misc/fontconfig/no-font-package.nix

@@ -1,17 +1,11 @@
-{ config, lib, pkgs, ... }:
-
-with lib;
-
 {
-  config = {
+  home.packages = [
-    home.packages = [
+    # Look, no font!
-      # Look, no font!
+  ];
-    ];
 
-    fonts.fontconfig.enable = true;
+  fonts.fontconfig.enable = true;
 
-    nmt.script = ''
+  nmt.script = ''
-      assertPathNotExists home-path/lib/fontconfig/cache
+    assertPathNotExists home-path/lib/fontconfig/cache
-    '';
+  '';
-  };
 }

tests/modules/misc/fontconfig/single-font-package.nix

@@ -1,15 +1,13 @@
-{ config, lib, pkgs, ... }:
+{ config, lib, pkgs, realPkgs, ... }:
 
-with lib;
+lib.mkIf config.test.enableBig {
+  home.packages = [ pkgs.comic-relief ];
 
-{
+  fonts.fontconfig.enable = true;
-  config = {
-    home.packages = [ pkgs.comic-relief ];
 
-    fonts.fontconfig.enable = true;
+  _module.args.pkgs = lib.mkForce realPkgs;
 
-    nmt.script = ''
+  nmt.script = ''
-      assertDirectoryNotEmpty home-path/lib/fontconfig/cache
+    assertDirectoryNotEmpty home-path/lib/fontconfig/cache
-    '';
+  '';
-  };
 }

tests/modules/misc/gtk/gtk2-basic-config.nix

@@ -1,25 +1,17 @@
-{ config, lib, pkgs, ... }:
-
-with lib;
-
 {
-  config = {
+  gtk = {
-    gtk = {
+    enable = true;
-      enable = true;
+    theme.name = "Adwaita";
-      theme.name = "Adwaita";
+    gtk2.extraConfig = "gtk-can-change-accels = 1";
-      gtk2.extraConfig = "gtk-can-change-accels = 1";
-    };
-
-    test.stubs.dconf = { };
-
-    nmt.script = ''
-      assertFileExists home-files/.gtkrc-2.0
-
-      assertFileContent home-files/.gtkrc-2.0 \
-        ${./gtk2-basic-config-expected.conf}
-
-      assertFileRegex home-path/etc/profile.d/hm-session-vars.sh \
-          'GTK2_RC_FILES=.*/.gtkrc-2.0'
-    '';
   };
+
+  nmt.script = ''
+    assertFileExists home-files/.gtkrc-2.0
+
+    assertFileContent home-files/.gtkrc-2.0 \
+      ${./gtk2-basic-config-expected.conf}
+
+    assertFileRegex home-path/etc/profile.d/hm-session-vars.sh \
+        'GTK2_RC_FILES=.*/.gtkrc-2.0'
+  '';
 }

tests/modules/misc/gtk/gtk2-config-file-location.nix

@@ -1,18 +1,12 @@
-{ config, lib, pkgs, ... }:
+{ config, ... }:
-
-with lib;
 
 {
-  config = {
+  gtk.enable = true;
-    gtk.enable = true;
+  gtk.gtk2.configLocation = "${config.xdg.configHome}/gtk-2.0/gtkrc";
-    gtk.gtk2.configLocation = "${config.xdg.configHome}/gtk-2.0/gtkrc";
 
-    test.stubs.dconf = { };
+  nmt.script = ''
-
+    assertFileExists home-files/.config/gtk-2.0/gtkrc
-    nmt.script = ''
+    assertFileRegex home-path/etc/profile.d/hm-session-vars.sh \
-      assertFileExists home-files/.config/gtk-2.0/gtkrc
+        'GTK2_RC_FILES=.*/\.config/gtk-2.0/gtkrc'
-      assertFileRegex home-path/etc/profile.d/hm-session-vars.sh \
+  '';
-          'GTK2_RC_FILES=.*/\.config/gtk-2.0/gtkrc'
-    '';
-  };
 }

tests/modules/misc/gtk/gtk3-basic-settings.nix

@@ -1,24 +1,16 @@
-{ config, lib, pkgs, ... }:
-
-with lib;
-
 {
-  config = {
+  gtk = {
-    gtk = {
+    enable = true;
-      enable = true;
+    gtk3.extraConfig = {
-      gtk3.extraConfig = {
+      gtk-cursor-blink = false;
-        gtk-cursor-blink = false;
+      gtk-recent-files-limit = 20;
-        gtk-recent-files-limit = 20;
-      };
     };
-
-    test.stubs.dconf = { };
-
-    nmt.script = ''
-      assertFileExists home-files/.config/gtk-3.0/settings.ini
-
-      assertFileContent home-files/.config/gtk-3.0/settings.ini \
-        ${./gtk3-basic-settings-expected.ini}
-    '';
   };
+
+  nmt.script = ''
+    assertFileExists home-files/.config/gtk-3.0/settings.ini
+
+    assertFileContent home-files/.config/gtk-3.0/settings.ini \
+      ${./gtk3-basic-settings-expected.ini}
+  '';
 }

tests/modules/misc/manual/manual.nix

@@ -1,22 +1,22 @@
-{ ... }:
+{ lib, realPkgs, ... }:
 
 {
-  config = {
+  manual = {
-    manual = {
+    html.enable = true;
-      html.enable = true;
+    manpages.enable = true;
-      manpages.enable = true;
+    json.enable = true;
-      json.enable = true;
-    };
-
-    nmt.script = ''
-      assertFileExists home-path/share/doc/home-manager/index.xhtml
-      assertFileExists home-path/share/doc/home-manager/options.json
-      assertFileExists home-path/share/doc/home-manager/options.xhtml
-      assertFileExists home-path/share/doc/home-manager/nixos-options.xhtml
-      assertFileExists home-path/share/doc/home-manager/nix-darwin-options.xhtml
-      assertFileExists home-path/share/doc/home-manager/release-notes.xhtml
-      assertFileExists home-path/share/man/man1/home-manager.1
-      assertFileExists home-path/share/man/man5/home-configuration.nix.5
-    '';
   };
+
+  _module.args.pkgs = lib.mkForce realPkgs;
+
+  nmt.script = ''
+    assertFileExists home-path/share/doc/home-manager/index.xhtml
+    assertFileExists home-path/share/doc/home-manager/options.json
+    assertFileExists home-path/share/doc/home-manager/options.xhtml
+    assertFileExists home-path/share/doc/home-manager/nixos-options.xhtml
+    assertFileExists home-path/share/doc/home-manager/nix-darwin-options.xhtml
+    assertFileExists home-path/share/doc/home-manager/release-notes.xhtml
+    assertFileExists home-path/share/man/man1/home-manager.1
+    assertFileExists home-path/share/man/man5/home-configuration.nix.5
+  '';
 }

tests/modules/misc/numlock/numlock.nix

@@ -1,16 +1,8 @@
-{ config, lib, pkgs, ... }:
-
-with lib;
-
 {
-  config = {
+  xsession.numlock.enable = true;
-    xsession.numlock.enable = true;
 
-    test.stubs.numlockx = { };
+  nmt.script = ''
-
+    serviceFile=home-files/.config/systemd/user/numlockx.service
-    nmt.script = ''
+    assertFileExists $serviceFile
-      serviceFile=home-files/.config/systemd/user/numlockx.service
+  '';
-      assertFileExists $serviceFile
-    '';
-  };
 }

tests/modules/misc/qt/qt-platform-theme-gnome.nix

@@ -6,13 +6,6 @@
     style.name = "adwaita";
   };
 
-  test.stubs = {
-    qgnomeplatform = { };
-    qgnomeplatform-qt6 = { };
-    adwaita-qt = { };
-    adwaita-qt6 = { };
-  };
-
   nmt.script = ''
     assertFileRegex home-path/etc/profile.d/hm-session-vars.sh \
       'QT_QPA_PLATFORMTHEME="gnome"'

tests/modules/misc/qt/qt-platform-theme-gtk.nix

@@ -1,6 +1,6 @@
-{
+{ config, ... }:
-  imports = [ ../../i18n/input-method/fcitx5-stubs.nix ];
 
+{
   qt = {
     enable = true;
     platformTheme.name = "gtk";
@@ -11,11 +11,11 @@
   nixpkgs.overlays = [
     (final: prev: {
       libsForQt5 = prev.libsForQt5.overrideScope (qt5final: qt5prev: {
-        qtstyleplugins = prev.mkStubPackage { outPath = null; };
+        qtstyleplugins = config.lib.test.mkStubPackage { outPath = null; };
       });
 
       qt6Packages = prev.qt6Packages.overrideScope (qt6final: qt6prev: {
-        qt6gtk2 = prev.mkStubPackage { outPath = null; };
+        qt6gtk2 = config.lib.test.mkStubPackage { outPath = null; };
       });
     })
   ];

tests/modules/misc/xdg/autostart.nix

@@ -1,20 +1,38 @@
-{ pkgs, ... }: {
+{ pkgs, ... }:
-  config = {
-    xdg.autostart = {
-      enable = true;
-      entries = [
-        "${pkgs.evolution}/share/applications/org.gnome.Evolution.desktop"
-        "${pkgs.tdesktop}/share/applications/org.telegram.desktop.desktop"
-      ];
-    };
 
-    nmt.script = ''
+{
-      assertFileExists home-files/.config/autostart/org.gnome.Evolution.desktop
+  xdg.autostart = {
-      assertFileContent home-files/.config/autostart/org.gnome.Evolution.desktop \
+    enable = true;
-        ${pkgs.evolution}/share/applications/org.gnome.Evolution.desktop
+    entries = [
-      assertFileExists home-files/.config/autostart/org.telegram.desktop.desktop
+      "${pkgs.test1}/share/applications/test1.desktop"
-      assertFileContent home-files/.config/autostart/org.telegram.desktop.desktop \
+      "${pkgs.test2}/share/applications/test2.desktop"
-        ${pkgs.tdesktop}/share/applications/org.telegram.desktop.desktop
+    ];
-    '';
   };
+
+  test.stubs = {
+    test1 = {
+      outPath = null;
+      buildScript = ''
+        mkdir -p $out/share/applications
+        echo test1 > $out/share/applications/test1.desktop
+      '';
+    };
+    test2 = {
+      outPath = null;
+      buildScript = ''
+        mkdir -p $out/share/applications
+        echo test2 > $out/share/applications/test2.desktop
+      '';
+    };
+  };
+
+  nmt.script = ''
+    assertFileExists home-files/.config/autostart/test1.desktop
+    assertFileContent home-files/.config/autostart/test1.desktop \
+      ${pkgs.test1}/share/applications/test1.desktop
+
+    assertFileExists home-files/.config/autostart/test2.desktop
+    assertFileContent home-files/.config/autostart/test2.desktop \
+      ${pkgs.test2}/share/applications/test2.desktop
+  '';
 }

tests/modules/misc/xdg/portal.nix

@@ -1,26 +1,28 @@
-{ config, lib, pkgs, ... }:
+{ config, lib, realPkgs, ... }:
 
 lib.mkIf config.test.enableBig {
   xdg.portal = {
     enable = true;
     extraPortals =
-      [ pkgs.xdg-desktop-portal-hyprland pkgs.xdg-desktop-portal-wlr ];
+      [ realPkgs.xdg-desktop-portal-hyprland realPkgs.xdg-desktop-portal-wlr ];
-    configPackages = [ pkgs.hyprland ];
+    configPackages = [ realPkgs.hyprland ];
     config = { sway.default = [ "wlr" "gtk" ]; };
   };
 
+  test.unstubs = [ (self: super: { inherit (realPkgs) xdg-desktop-portal; }) ];
+
   nmt.script = ''
     assertFileExists home-path/share/systemd/user/xdg-desktop-portal.service
     assertFileExists home-path/share/systemd/user/xdg-desktop-portal-wlr.service
     assertFileExists home-path/share/systemd/user/xdg-desktop-portal-hyprland.service
 
     assertFileContent home-path/share/xdg-desktop-portal/portals/hyprland.portal \
-      ${pkgs.xdg-desktop-portal-hyprland}/share/xdg-desktop-portal/portals/hyprland.portal
+      ${realPkgs.xdg-desktop-portal-hyprland}/share/xdg-desktop-portal/portals/hyprland.portal
     assertFileContent home-path/share/xdg-desktop-portal/portals/wlr.portal \
-      ${pkgs.xdg-desktop-portal-wlr}/share/xdg-desktop-portal/portals/wlr.portal
+      ${realPkgs.xdg-desktop-portal-wlr}/share/xdg-desktop-portal/portals/wlr.portal
 
     assertFileContent home-path/share/xdg-desktop-portal/hyprland-portals.conf \
-      ${pkgs.hyprland}/share/xdg-desktop-portal/hyprland-portals.conf
+      ${realPkgs.hyprland}/share/xdg-desktop-portal/hyprland-portals.conf
     assertFileContent home-files/.config/xdg-desktop-portal/sway-portals.conf \
       ${./sway-portals-expected.conf}
   '';

tests/modules/programs/abook/no-settings.nix

@@ -6,8 +6,6 @@ with lib;
   config = {
     programs.abook.enable = true;
 
-    test.stubs.abook = { };
-
     nmt.script = ''
       assertPathNotExists home-files/.config/abook/abookrc
     '';

tests/modules/programs/abook/with-settings.nix

@@ -28,8 +28,6 @@ with lib;
       '';
     };
 
-    test.stubs.abook = { };
-
     nmt.script = ''
       assertFileExists home-files/.config/abook/abookrc
       assertFileContent home-files/.config/abook/abookrc ${./with-settings.cfg}

tests/modules/programs/aerc/assertion.nix

@@ -19,8 +19,6 @@ with lib;
       This option is safe; if `passwordCommand` is properly set, no credentials will be written to the nix store.
     ''];
 
-    test.stubs.aerc = { };
-
     programs.aerc = {
       enable = true;
       extraAccounts = {

tests/modules/programs/aerc/noSettings.nix

@@ -12,7 +12,5 @@ with lib;
       assertPathNotExists ${dir}/stylesets
     '';
     programs.aerc.enable = true;
-
-    test.stubs.aerc = { };
   };
 }

tests/modules/programs/aerc/settings.nix

@@ -19,8 +19,6 @@ with lib;
       assertFileContent   ${dir}/stylesets/asLines ${./stylesets.expected}
     '';
 
-    test.stubs.aerc = { };
-
     programs.aerc = {
       enable = true;
 

tests/modules/programs/aerospace/aerospace.nix

@@ -17,8 +17,6 @@
     };
   };
 
-  test.stubs.aerospace = { };
-
   nmt.script = ''
     assertFileContent home-files/.config/aerospace/aerospace.toml ${
       ./settings-expected.toml

tests/modules/programs/alacritty/empty-settings.nix

@@ -1,11 +1,7 @@
 {
-  config = {
+  programs.alacritty.enable = true;
-    programs.alacritty.enable = true;
 
-    test.stubs.alacritty = { };
+  nmt.script = ''
-
+    assertPathNotExists home-files/.config/alacritty
-    nmt.script = ''
+  '';
-      assertPathNotExists home-files/.config/alacritty
-    '';
-  };
 }

tests/modules/programs/alacritty/example-settings.nix

@@ -1,31 +1,23 @@
-{ config, ... }:
-
 {
-  config = {
+  programs.alacritty = {
-    programs.alacritty = {
+    enable = true;
-      enable = true;
+    settings = {
-      package = config.lib.test.mkStubPackage { };
+      window.dimensions = {
-
+        lines = 3;
-      settings = {
+        columns = 200;
-        window.dimensions = {
-          lines = 3;
-          columns = 200;
-        };
-
-        keyboard.bindings = [{
-          key = "K";
-          mods = "Control";
-          chars = "\\u000c";
-        }];
       };
+
+      keyboard.bindings = [{
+        key = "K";
+        mods = "Control";
+        chars = "\\u000c";
+      }];
     };
-
-    test.stubs = { alacritty = { }; };
-
-    nmt.script = ''
-      assertFileContent \
-        home-files/.config/alacritty/alacritty.toml \
-        ${./example-settings-expected.toml}
-    '';
   };
+
+  nmt.script = ''
+    assertFileContent \
+      home-files/.config/alacritty/alacritty.toml \
+      ${./example-settings-expected.toml}
+  '';
 }

tests/modules/programs/alacritty/settings-merging.nix

@@ -1,39 +1,33 @@
-{ config, lib, ... }:
+{ lib, ... }:
 
 {
-  config = {
+  programs.alacritty = {
-    programs.alacritty = {
+    enable = true;
-      enable = true;
+    settings = {
-      package = config.lib.test.mkStubPackage { };
+      window.dimensions = {
+        lines = 3;
+        columns = 200;
+      };
 
-      settings = {
+      keyboard.bindings = [{
-        window.dimensions = {
+        key = "K";
-          lines = 3;
+        mods = "Control";
-          columns = 200;
+        chars = "\\u000c";
-        };
+      }];
 
-        keyboard.bindings = [{
+      font = let
-          key = "K";
+        defaultFont =
-          mods = "Control";
+          lib.mkMerge [ (lib.mkIf true "SFMono") (lib.mkIf false "Iosevka") ];
-          chars = "\\u000c";
+      in {
-        }];
+        normal.family = defaultFont;
-
+        bold.family = defaultFont;
-        font = let
-          defaultFont =
-            lib.mkMerge [ (lib.mkIf true "SFMono") (lib.mkIf false "Iosevka") ];
-        in {
-          normal.family = defaultFont;
-          bold.family = defaultFont;
-        };
       };
     };
-
-    test.stubs = { alacritty = { }; };
-
-    nmt.script = ''
-      assertFileContent \
-        home-files/.config/alacritty/alacritty.toml \
-        ${./settings-toml-expected.toml}
-    '';
   };
+
+  nmt.script = ''
+    assertFileContent \
+      home-files/.config/alacritty/alacritty.toml \
+      ${./settings-toml-expected.toml}
+  '';
 }

tests/modules/programs/alacritty/toml-config.nix

@@ -1,36 +1,28 @@
-{ config, ... }:
-
 {
-  config = {
+  programs.alacritty = {
-    programs.alacritty = {
+    enable = true;
-      enable = true;
+    settings = {
-      package = config.lib.test.mkStubPackage { };
+      window.dimensions = {
+        lines = 3;
+        columns = 200;
+      };
 
-      settings = {
+      keyboard.bindings = [{
-        window.dimensions = {
+        key = "K";
-          lines = 3;
+        mods = "Control";
-          columns = 200;
+        chars = "\\u000c";
-        };
+      }];
 
-        keyboard.bindings = [{
+      font = {
-          key = "K";
+        normal.family = "SFMono";
-          mods = "Control";
+        bold.family = "SFMono";
-          chars = "\\u000c";
-        }];
-
-        font = {
-          normal.family = "SFMono";
-          bold.family = "SFMono";
-        };
       };
     };
-
-    test.stubs = { alacritty = { }; };
-
-    nmt.script = ''
-      assertFileContent \
-        home-files/.config/alacritty/alacritty.toml \
-        ${./settings-toml-expected.toml}
-    '';
   };
+
+  nmt.script = ''
+    assertFileContent \
+      home-files/.config/alacritty/alacritty.toml \
+      ${./settings-toml-expected.toml}
+  '';
 }

tests/modules/programs/alot/alot.nix

@@ -1,34 +1,26 @@
-{ config, lib, pkgs, ... }:
-
-with lib;
-
 {
   imports = [ ../../accounts/email-test-accounts.nix ];
 
-  config = {
+  accounts.email.accounts = {
-    accounts.email.accounts = {
+    "hm@example.com" = {
-      "hm@example.com" = {
+      notmuch.enable = true;
-        notmuch.enable = true;
+      alot = {
-        alot = {
+        contactCompletion = { };
-          contactCompletion = { };
+        extraConfig = ''
-          extraConfig = ''
+          auto_remove_unread = True
-            auto_remove_unread = True
+          ask_subject = False
-            ask_subject = False
+          handle_mouse = True
-            handle_mouse = True
+        '';
-          '';
-        };
-        imap.port = 993;
       };
+      imap.port = 993;
     };
-
-    programs.alot = { enable = true; };
-
-    test.stubs.alot = { };
-
-    nmt.script = ''
-      assertFileExists home-files/.config/alot/config
-      assertFileContent home-files/.config/alot/config ${./alot-expected.conf}
-    '';
   };
+
+  programs.alot = { enable = true; };
+
+  nmt.script = ''
+    assertFileExists home-files/.config/alot/config
+    assertFileContent home-files/.config/alot/config ${./alot-expected.conf}
+  '';
 }
 

tests/modules/programs/antidote/antidote.nix

@@ -1,5 +1,3 @@
-{ pkgs, ... }:
-
 let relToDotDirCustom = ".zshplugins";
 in {
   programs.zsh = {
@@ -12,11 +10,6 @@ in {
     };
   };
 
-  test.stubs = {
-    antidote = { };
-    zsh = { };
-  };
-
   nmt.script = ''
     assertFileContains home-files/${relToDotDirCustom}/.zshrc \
       'source @antidote@/share/antidote/antidote.zsh'

tests/modules/programs/aria2/settings.nix

@@ -1,40 +1,32 @@
-{ config, lib, pkgs, ... }:
-
-with lib;
-
 {
-  config = {
+  programs.aria2 = {
-    programs.aria2 = {
+    enable = true;
-      enable = true;
 
-      settings = {
+    settings = {
-        listen-port = 60000;
+      listen-port = 60000;
-        dht-listen-port = 60000;
+      dht-listen-port = 60000;
-        seed-ratio = 1.0;
+      seed-ratio = 1.0;
-        max-upload-limit = "50K";
+      max-upload-limit = "50K";
-        ftp-pasv = true;
+      ftp-pasv = true;
-      };
-
-      extraConfig = ''
-        # Extra aria2 configuration.
-      '';
     };
 
-    test.stubs.aria2 = { };
+    extraConfig = ''
-
+      # Extra aria2 configuration.
-    nmt.script = ''
-      assertFileContent \
-        home-files/.config/aria2/aria2.conf \
-        ${
-          pkgs.writeText "aria2-expected-config.conf" ''
-            dht-listen-port=60000
-            ftp-pasv=true
-            listen-port=60000
-            max-upload-limit=50K
-            seed-ratio=1.000000
-            # Extra aria2 configuration.
-          ''
-        }
     '';
   };
+
+  nmt.script = ''
+    assertFileContent \
+      home-files/.config/aria2/aria2.conf \
+      ${
+        builtins.toFile "aria2-expected-config.conf" ''
+          dht-listen-port=60000
+          ftp-pasv=true
+          listen-port=60000
+          max-upload-limit=50K
+          seed-ratio=1.000000
+          # Extra aria2 configuration.
+        ''
+      }
+  '';
 }

tests/modules/programs/atuin/bash.nix

@@ -1,5 +1,3 @@
-{ ... }:
-
 {
   programs = {
     atuin.enable = true;
@@ -9,11 +7,6 @@
     };
   };
 
-  test.stubs = {
-    atuin = { name = "atuin"; };
-    bash-preexec = { };
-  };
-
   nmt.script = ''
     assertFileExists home-files/.bashrc
     assertFileContains \

tests/modules/programs/atuin/empty-settings.nix

@@ -1,13 +1,6 @@
-{ ... }:
-
 {
   programs.atuin.enable = true;
 
-  test.stubs = {
-    atuin = { name = "atuin"; };
-    bash-preexec = { };
-  };
-
   nmt.script = ''
     assertPathNotExists home-files/.config/atuin/config.toml
   '';

tests/modules/programs/atuin/example-settings.nix

@@ -12,11 +12,6 @@
     };
   };
 
-  test.stubs = {
-    atuin = { name = "atuin"; };
-    bash-preexec = { };
-  };
-
   nmt.script = ''
     assertFileContent \
       home-files/.config/atuin/config.toml \

tests/modules/programs/atuin/fish.nix

@@ -10,11 +10,6 @@
   xdg.dataFile."fish/home-manager_generated_completions".source =
     lib.mkForce (builtins.toFile "empty" "");
 
-  test.stubs = {
-    atuin = { name = "atuin"; };
-    bash-preexec = { };
-  };
-
   nmt.script = ''
     assertFileExists home-files/.config/fish/config.fish
     assertFileContains \

tests/modules/programs/atuin/no-shell.nix

@@ -17,11 +17,6 @@
   xdg.dataFile."fish/home-manager_generated_completions".source =
     lib.mkForce (builtins.toFile "empty" "");
 
-  test.stubs = {
-    atuin = { name = "atuin"; };
-    bash-preexec = { };
-  };
-
   nmt.script = ''
     assertFileNotRegex home-files/.zshrc 'atuin init zsh'
     assertFileNotRegex home-files/.bashrc 'atuin init bash'

tests/modules/programs/atuin/set-flags.nix

@@ -16,11 +16,6 @@
   xdg.dataFile."fish/home-manager_generated_completions".source =
     lib.mkForce (builtins.toFile "empty" "");
 
-  test.stubs = {
-    atuin = { name = "atuin"; };
-    bash-preexec = { };
-  };
-
   nmt.script = ''
     assertFileExists home-files/.bashrc
     assertFileContains \

tests/modules/programs/atuin/zsh.nix

@@ -1,16 +1,9 @@
-{ ... }:
-
 {
   programs = {
     atuin.enable = true;
     zsh.enable = true;
   };
 
-  test.stubs = {
-    atuin = { name = "atuin"; };
-    bash-preexec = { };
-  };
-
   nmt.script = ''
     assertFileExists home-files/.zshrc
     assertFileContains \

tests/modules/programs/autojump/default-settings.nix

@@ -1,18 +1,12 @@
-{ config, lib, pkgs, ... }:
-
-with lib;
-
 {
-  config = {
+  programs.autojump.enable = true;
-    programs.autojump.enable = true;
 
-    test.stubs.autojump = {
+  test.stubs.autojump = {
-      buildScript = "mkdir -p $out/bin; touch $out/bin/autojump";
+    buildScript = "mkdir -p $out/bin; touch $out/bin/autojump";
-      outPath = null;
+    outPath = null;
-    };
-
-    nmt.script = ''
-      assertFileExists home-path/bin/autojump
-    '';
   };
+
+  nmt.script = ''
+    assertFileExists home-path/bin/autojump
+  '';
 }

tests/modules/programs/autorandr/basic-configuration.nix

@@ -1,66 +1,60 @@
-{ config, pkgs, ... }:
-
 {
-  config = {
+  programs.autorandr = {
-    programs.autorandr = {
+    enable = true;
-      enable = true;
+    profiles = {
-      profiles = {
+      default = {
-        default = {
+        fingerprint = {
-          fingerprint = {
+          DP1 = "XXX";
-            DP1 = "XXX";
+          DP2 = "YYY";
-            DP2 = "YYY";
+        };
-          };
+        config = {
-          config = {
+          DP1.enable = false;
-            DP1.enable = false;
+          DP2 = {
-            DP2 = {
+            crtc = 0;
-              crtc = 0;
+            primary = true;
-              primary = true;
+            position = "0x0";
-              position = "0x0";
+            mode = "1920x1080";
-              mode = "1920x1080";
+            filter = "nearest";
-              filter = "nearest";
+            transform = [
-              transform = [
+              [ 0.6 0.0 0.0 ] # a b c
-                [ 0.6 0.0 0.0 ] # a b c
+              [ 0.0 0.6 0.0 ] # d e f
-                [ 0.0 0.6 0.0 ] # d e f
+              [ 0.0 0.0 1.0 ] # g h i
-                [ 0.0 0.0 1.0 ] # g h i
+            ];
-              ];
+            extraConfig = ''
-              extraConfig = ''
+              key1 value1
-                key1 value1
+              key2 value2
-                key2 value2
+            '';
-              '';
-            };
           };
         };
       };
     };
-
-    test.stubs.autorandr = { };
-
-    nmt.script = ''
-      config=home-files/.config/autorandr/default/config
-      setup=home-files/.config/autorandr/default/setup
-
-      assertFileExists $setup
-      assertFileRegex $setup 'DP1 XXX'
-      assertFileRegex $setup 'DP2 YYY'
-
-      assertFileExists $config
-      assertFileContent $config \
-          ${
-            pkgs.writeText "basic-configuration.conf" ''
-              output DP1
-              off
-
-              output DP2
-              pos 0x0
-              crtc 0
-              primary
-              mode 1920x1080
-              filter nearest
-              transform 0.600000,0.000000,0.000000,0.000000,0.600000,0.000000,0.000000,0.000000,1.000000
-              key1 value1
-              key2 value2
-            ''
-          }
-    '';
   };
+
+  nmt.script = ''
+    config=home-files/.config/autorandr/default/config
+    setup=home-files/.config/autorandr/default/setup
+
+    assertFileExists $setup
+    assertFileRegex $setup 'DP1 XXX'
+    assertFileRegex $setup 'DP2 YYY'
+
+    assertFileExists $config
+    assertFileContent $config \
+        ${
+          builtins.toFile "basic-configuration.conf" ''
+            output DP1
+            off
+
+            output DP2
+            pos 0x0
+            crtc 0
+            primary
+            mode 1920x1080
+            filter nearest
+            transform 0.600000,0.000000,0.000000,0.000000,0.600000,0.000000,0.000000,0.000000,1.000000
+            key1 value1
+            key2 value2
+          ''
+        }
+  '';
 }

tests/modules/programs/autorandr/scale.nix

@@ -1,34 +1,28 @@
-{ config, pkgs, ... }:
-
 {
-  config = {
+  programs.autorandr = {
-    programs.autorandr = {
+    enable = true;
-      enable = true;
+    profiles = {
-      profiles = {
+      default = {
-        default = {
+        fingerprint.DP1 = "XXX";
-          fingerprint.DP1 = "XXX";
+        config.DP1 = {
-          config.DP1 = {
+          scale = {
-            scale = {
+            x = 2;
-              x = 2;
+            y = 4;
-              y = 4;
-            };
           };
         };
       };
     };
-
-    test.stubs.autorandr = { };
-
-    nmt.script = ''
-      config=home-files/.config/autorandr/default/config
-
-      assertFileExists $config
-      assertFileContent $config \
-          ${
-            pkgs.writeText "scale-expected.conf" ''
-              output DP1
-              scale 2x4''
-          }
-    '';
   };
+
+  nmt.script = ''
+    config=home-files/.config/autorandr/default/config
+
+    assertFileExists $config
+    assertFileContent $config \
+        ${
+          builtins.toFile "scale-expected.conf" ''
+            output DP1
+            scale 2x4''
+        }
+  '';
 }

tests/modules/programs/awscli/awscli.nix

@@ -1,5 +1,3 @@
-{ ... }:
-
 {
   programs = {
     awscli = {
@@ -14,8 +12,6 @@
     };
   };
 
-  test.stubs.awscli2 = { };
-
   nmt.script = ''
     assertFileExists home-files/.aws/config
     assertFileContent home-files/.aws/config \

tests/modules/programs/bacon/bacon.nix

@@ -21,7 +21,7 @@ in {
       };
     };
   };
-  test.stubs.bacon = { };
+
   nmt.script = ''
     assertFileExists 'home-files/${configDir}/prefs.toml'
     assertFileContent 'home-files/${configDir}/prefs.toml' ${./expected.toml}

tests/modules/programs/bacon/empty-config.nix

@@ -7,8 +7,6 @@ let
 in {
   programs.bacon.enable = true;
 
-  test.stubs.bacon = { };
-
   nmt.script = ''
     assertPathNotExists 'home-files/${configDir}/prefs.toml'
   '';

tests/modules/programs/bash/completion.nix

@@ -1,12 +1,6 @@
-{ config, lib, pkgs, ... }:
-
-with lib;
-
 {
   programs.bash.enable = true;
 
-  test.stubs.bash-completion = { };
-
   nmt.script = ''
     assertFileExists home-files/.bashrc
 

tests/modules/programs/bash/logout.nix

@@ -1,27 +1,21 @@
-{ config, lib, pkgs, ... }:
-
-with lib;
-
 {
-  config = {
+  programs.bash = {
-    programs.bash = {
+    enable = true;
-      enable = true;
+    enableCompletion = false;
-      enableCompletion = false;
 
-      logoutExtra = ''
+    logoutExtra = ''
-        clear-console
+      clear-console
-      '';
-    };
-
-    nmt.script = ''
-      assertFileExists home-files/.bash_logout
-      assertFileContent \
-        home-files/.bash_logout \
-        ${
-          builtins.toFile "logout-expected" ''
-            clear-console
-          ''
-        }
     '';
   };
+
+  nmt.script = ''
+    assertFileExists home-files/.bash_logout
+    assertFileContent \
+      home-files/.bash_logout \
+      ${
+        builtins.toFile "logout-expected" ''
+          clear-console
+        ''
+      }
+  '';
 }

tests/modules/programs/bash/session-variables.nix

@@ -1,33 +1,29 @@
-{ config, lib, pkgs, ... }:
+{ config, ... }:
-
-with lib;
 
 {
-  config = {
+  programs.bash = {
-    programs.bash = {
+    enable = true;
-      enable = true;
+    enableCompletion = false;
-      enableCompletion = false;
 
-      sessionVariables = {
+    sessionVariables = {
-        V1 = "v1";
+      V1 = "v1";
-        V2 = "v2-${config.programs.bash.sessionVariables.V1}";
+      V2 = "v2-${config.programs.bash.sessionVariables.V1}";
-      };
     };
-
-    nmt.script = ''
-      assertFileExists home-files/.profile
-      assertFileContent \
-        home-files/.profile \
-        ${
-          builtins.toFile "session-variables-expected" ''
-            . "/home/hm-user/.nix-profile/etc/profile.d/hm-session-vars.sh"
-
-            export V1="v1"
-            export V2="v2-v1"
-
-
-          ''
-        }
-    '';
   };
+
+  nmt.script = ''
+    assertFileExists home-files/.profile
+    assertFileContent \
+      home-files/.profile \
+      ${
+        builtins.toFile "session-variables-expected" ''
+          . "/home/hm-user/.nix-profile/etc/profile.d/hm-session-vars.sh"
+
+          export V1="v1"
+          export V2="v2-v1"
+
+
+        ''
+      }
+  '';
 }

tests/modules/programs/bat/bat.nix

@@ -1,58 +1,50 @@
-{ config, lib, pkgs, ... }:
-
-with lib;
-
 {
-  config = {
+  programs.bat = {
-    programs.bat = {
+    enable = true;
-      enable = true;
 
-      config = {
+    config = {
-        theme = "TwoDark";
+      theme = "TwoDark";
-        pager = "less -FR";
+      pager = "less -FR";
-        map-syntax = [ "*.jenkinsfile:Groovy" "*.props:Java Properties" ];
+      map-syntax = [ "*.jenkinsfile:Groovy" "*.props:Java Properties" ];
-        show-all = true;
+      show-all = true;
 
-        # False boolean options should not appear in the config
+      # False boolean options should not appear in the config
-        lessopen = false;
+      lessopen = false;
-      };
-
-      themes.testtheme.src = pkgs.writeText "testtheme.tmTheme" ''
-        This is a test theme.
-      '';
-
-      syntaxes.testsyntax.src = pkgs.writeText "testsyntax.sublime-syntax" ''
-        This is a test syntax.
-      '';
     };
 
-    test.stubs.bat = { };
+    themes.testtheme.src = builtins.toFile "testtheme.tmTheme" ''
+      This is a test theme.
+    '';
 
-    nmt.script = ''
+    syntaxes.testsyntax.src = builtins.toFile "testsyntax.sublime-syntax" ''
-      assertFileExists home-files/.config/bat/config
+      This is a test syntax.
-      assertFileContent home-files/.config/bat/config ${
-        pkgs.writeText "bat.expected" ''
-          --map-syntax='*.jenkinsfile:Groovy'
-          --map-syntax='*.props:Java Properties'
-          --pager='less -FR'
-          --theme=TwoDark
-          --show-all
-        ''
-      }
-
-      assertFileExists home-files/.config/bat/themes/testtheme.tmTheme
-      assertFileContent home-files/.config/bat/themes/testtheme.tmTheme ${
-        pkgs.writeText "bat.expected" ''
-          This is a test theme.
-        ''
-      }
-
-      assertFileExists home-files/.config/bat/syntaxes/testsyntax.sublime-syntax
-      assertFileContent home-files/.config/bat/syntaxes/testsyntax.sublime-syntax ${
-        pkgs.writeText "bat.expected" ''
-          This is a test syntax.
-        ''
-      }
     '';
   };
+
+  nmt.script = ''
+    assertFileExists home-files/.config/bat/config
+    assertFileContent home-files/.config/bat/config ${
+      builtins.toFile "bat.expected" ''
+        --map-syntax='*.jenkinsfile:Groovy'
+        --map-syntax='*.props:Java Properties'
+        --pager='less -FR'
+        --theme=TwoDark
+        --show-all
+      ''
+    }
+
+    assertFileExists home-files/.config/bat/themes/testtheme.tmTheme
+    assertFileContent home-files/.config/bat/themes/testtheme.tmTheme ${
+      builtins.toFile "bat.expected" ''
+        This is a test theme.
+      ''
+    }
+
+    assertFileExists home-files/.config/bat/syntaxes/testsyntax.sublime-syntax
+    assertFileContent home-files/.config/bat/syntaxes/testsyntax.sublime-syntax ${
+      builtins.toFile "bat.expected" ''
+        This is a test syntax.
+      ''
+    }
+  '';
 }

tests/modules/programs/bat/deprecated-options.nix

@@ -1,67 +1,59 @@
-{ config, lib, pkgs, ... }:
-
-with lib;
-
 {
-  config = {
+  programs.bat = {
-    programs.bat = {
+    enable = true;
-      enable = true;
 
-      config = {
+    config = {
-        theme = "TwoDark";
+      theme = "TwoDark";
-        pager = "less -FR";
+      pager = "less -FR";
-        map-syntax = [ "*.jenkinsfile:Groovy" "*.props:Java Properties" ];
+      map-syntax = [ "*.jenkinsfile:Groovy" "*.props:Java Properties" ];
-      };
-
-      themes.testtheme = ''
-        This is a test theme.
-      '';
-
-      syntaxes.testsyntax = ''
-        This is a test syntax.
-      '';
     };
 
-    test.stubs.bat = { };
+    themes.testtheme = ''
+      This is a test theme.
+    '';
 
-    test.asserts.warnings.enable = true;
+    syntaxes.testsyntax = ''
-    test.asserts.warnings.expected = [
+      This is a test syntax.
-      ''
-        Using programs.bat.themes as a string option is deprecated and will be
-        removed in the future. Please change to using it as an attribute set
-        instead.
-      ''
-      ''
-        Using programs.bat.syntaxes as a string option is deprecated and will be
-        removed in the future. Please change to using it as an attribute set
-        instead.
-      ''
-    ];
-
-    nmt.script = ''
-      assertFileExists home-files/.config/bat/config
-      assertFileContent home-files/.config/bat/config ${
-        pkgs.writeText "bat.expected" ''
-          --map-syntax='*.jenkinsfile:Groovy'
-          --map-syntax='*.props:Java Properties'
-          --pager='less -FR'
-          --theme=TwoDark
-        ''
-      }
-
-      assertFileExists home-files/.config/bat/themes/testtheme.tmTheme
-      assertFileContent home-files/.config/bat/themes/testtheme.tmTheme ${
-        pkgs.writeText "bat.expected" ''
-          This is a test theme.
-        ''
-      }
-
-      assertFileExists home-files/.config/bat/syntaxes/testsyntax.sublime-syntax
-      assertFileContent home-files/.config/bat/syntaxes/testsyntax.sublime-syntax ${
-        pkgs.writeText "bat.expected" ''
-          This is a test syntax.
-        ''
-      }
     '';
   };
+
+  test.asserts.warnings.enable = true;
+  test.asserts.warnings.expected = [
+    ''
+      Using programs.bat.themes as a string option is deprecated and will be
+      removed in the future. Please change to using it as an attribute set
+      instead.
+    ''
+    ''
+      Using programs.bat.syntaxes as a string option is deprecated and will be
+      removed in the future. Please change to using it as an attribute set
+      instead.
+    ''
+  ];
+
+  nmt.script = ''
+    assertFileExists home-files/.config/bat/config
+    assertFileContent home-files/.config/bat/config ${
+      builtins.toFile "bat.expected" ''
+        --map-syntax='*.jenkinsfile:Groovy'
+        --map-syntax='*.props:Java Properties'
+        --pager='less -FR'
+        --theme=TwoDark
+      ''
+    }
+
+    assertFileExists home-files/.config/bat/themes/testtheme.tmTheme
+    assertFileContent home-files/.config/bat/themes/testtheme.tmTheme ${
+      builtins.toFile "bat.expected" ''
+        This is a test theme.
+      ''
+    }
+
+    assertFileExists home-files/.config/bat/syntaxes/testsyntax.sublime-syntax
+    assertFileContent home-files/.config/bat/syntaxes/testsyntax.sublime-syntax ${
+      builtins.toFile "bat.expected" ''
+        This is a test syntax.
+      ''
+    }
+  '';
 }

tests/modules/programs/beets/mpdstats.nix

@@ -1,5 +1,3 @@
-{ config, ... }:
-
 {
   home.stateVersion = "23.05";
 
@@ -14,11 +12,6 @@
     mpdIntegration.enableStats = true;
   };
 
-  test.stubs = {
-    beets = { };
-    mpd = { };
-  };
-
   nmt.script = ''
     assertFileExists home-files/.config/beets/config.yaml
     assertFileContent \

tests/modules/programs/beets/mpdupdate.nix

@@ -1,11 +1,8 @@
-{ config, ... }:
-
 {
   home.stateVersion = "23.05";
 
   programs.beets = {
     enable = true;
-    package = config.lib.test.mkStubPackage { outPath = "@beets@"; };
     mpdIntegration.enableUpdate = true;
   };
 

tests/modules/programs/bemenu/basic-configuration.nix

@@ -19,8 +19,6 @@
     };
   };
 
-  test.stubs.bemenu = { };
-
   nmt.script = ''
     assertFileExists home-path/etc/profile.d/hm-session-vars.sh
     assertFileContains home-path/etc/profile.d/hm-session-vars.sh \

tests/modules/programs/bemenu/empty-configuration.nix

@@ -1,7 +1,5 @@
 {
-  programs.bemenu = { enable = true; };
+  programs.bemenu.enable = true;
-
-  test.stubs.bemenu = { };
 
   nmt.script = ''
     assertFileExists home-path/etc/profile.d/hm-session-vars.sh

tests/modules/programs/borgmatic/basic-configuration.nix

@@ -1,4 +1,4 @@
-{ config, pkgs, ... }:
+{ config, realPkgs, ... }:
 
 let
 
@@ -61,8 +61,6 @@ in {
     };
   };
 
-  test.stubs.borgmatic = { };
-
   nmt.script = ''
     config_file=$TESTED/home-files/.config/borgmatic.d/main.yaml
     assertFileExists $config_file
@@ -120,7 +118,7 @@ in {
       builtins.elemAt backups.main.hooks.extraConfig.before_actions 0
     }"
 
-    yq=${pkgs.yq-go}/bin/yq
+    yq=${realPkgs.yq-go}/bin/yq
 
     for filter in "''${!expectations[@]}"; do
       expected_value="''${expectations[$filter]}"

tests/modules/programs/borgmatic/both-sourcedirectories-and-patterns.nix

@@ -1,10 +1,4 @@
-{ config, pkgs, ... }:
+{
-
-let
-
-  backups = config.programs.borgmatic.backups;
-
-in {
   programs.borgmatic = {
     enable = true;
     backups = {
@@ -18,8 +12,6 @@ in {
     };
   };
 
-  test.stubs.borgmatic = { };
-
   test.asserts.assertions.expected = [''
     Borgmatic backup configuration "main" cannot specify both 'location.sourceDirectories' and 'location.patterns'.
   ''];

tests/modules/programs/borgmatic/exclude-hm-symlinks-nothing-else.nix

@@ -1,11 +1,6 @@
-{ config, pkgs, ... }:
+{ realPkgs, ... }:
 
-let
+{
-
-  backups = config.programs.borgmatic.backups;
-  excludeFile = builtins.toFile "excludeFile.txt" "/foo/bar";
-
-in {
   programs.borgmatic = {
     enable = true;
     backups = {
@@ -19,13 +14,11 @@ in {
     };
   };
 
-  test.stubs.borgmatic = { };
-
   nmt.script = ''
     config_file=$TESTED/home-files/.config/borgmatic.d/main.yaml
     assertFileExists $config_file
 
-    yq=${pkgs.yq-go}/bin/yq
+    yq=${realPkgs.yq-go}/bin/yq
 
     hmExclusionsFile=$($yq '.exclude_from[0]' $config_file)
     expected_content='/home/hm-user/.config/borgmatic.d/main.yaml'

tests/modules/programs/borgmatic/exclude-hm-symlinks.nix

@@ -1,8 +1,7 @@
-{ config, pkgs, ... }:
+{ realPkgs, ... }:
 
 let
 
-  backups = config.programs.borgmatic.backups;
   excludeFile = builtins.toFile "excludeFile.txt" "/foo/bar";
 
 in {
@@ -20,8 +19,6 @@ in {
     };
   };
 
-  test.stubs.borgmatic = { };
-
   nmt.script = ''
     config_file=$TESTED/home-files/.config/borgmatic.d/main.yaml
     assertFileExists $config_file
@@ -30,7 +27,7 @@ in {
 
     expectations[exclude_from[0]]="${excludeFile}"
 
-    yq=${pkgs.yq-go}/bin/yq
+    yq=${realPkgs.yq-go}/bin/yq
 
     for filter in "''${!expectations[@]}"; do
       expected_value="''${expectations[$filter]}"

tests/modules/programs/borgmatic/include-hm-symlinks.nix

@@ -1,8 +1,7 @@
-{ config, pkgs, ... }:
+{ realPkgs, ... }:
 
 let
 
-  backups = config.programs.borgmatic.backups;
   excludeFile = builtins.toFile "excludeFile.txt" "/foo/bar";
 
 in {
@@ -20,8 +19,6 @@ in {
     };
   };
 
-  test.stubs.borgmatic = { };
-
   nmt.script = ''
     config_file=$TESTED/home-files/.config/borgmatic.d/main.yaml
     assertFileExists $config_file
@@ -30,7 +27,7 @@ in {
 
     expectations[exclude_from[0]]="${excludeFile}"
 
-    yq=${pkgs.yq-go}/bin/yq
+    yq=${realPkgs.yq-go}/bin/yq
 
     for filter in "''${!expectations[@]}"; do
       expected_value="''${expectations[$filter]}"

tests/modules/programs/borgmatic/neither-sourcedirectories-nor-patterns.nix

@@ -1,17 +1,9 @@
-{ config, pkgs, ... }:
+{
-
-let
-
-  backups = config.programs.borgmatic.backups;
-
-in {
   programs.borgmatic = {
     enable = true;
     backups = { main = { location = { repositories = [ "/mnt/disk1" ]; }; }; };
   };
 
-  test.stubs.borgmatic = { };
-
   test.asserts.assertions.expected = [''
     Borgmatic backup configuration "main" must specify one of 'location.sourceDirectories' or 'location.patterns'.
   ''];

tests/modules/programs/borgmatic/patterns-configuration.nix

@@ -1,8 +1,7 @@
-{ config, pkgs, ... }:
+{ config, realPkgs, ... }:
 
 let
 
-  boolToString = bool: if bool then "true" else "false";
   backups = config.programs.borgmatic.backups;
 
 in {
@@ -23,8 +22,6 @@ in {
     };
   };
 
-  test.stubs.borgmatic = { };
-
   nmt.script = ''
     config_file=$TESTED/home-files/.config/borgmatic.d/main.yaml
     assertFileExists $config_file
@@ -44,7 +41,7 @@ in {
       builtins.elemAt backups.main.location.patterns 3
     }"
 
-    yq=${pkgs.yq-go}/bin/yq
+    yq=${realPkgs.yq-go}/bin/yq
 
     for filter in "''${!expectations[@]}"; do
       expected_value="''${expectations[$filter]}"

tests/modules/programs/boxxy/empty-settings.nix

@@ -6,8 +6,6 @@ with lib;
   config = {
     programs.boxxy.enable = true;
 
-    test.stubs.boxxy = { };
-
     nmt.script = ''
       assertPathNotExists home-files/.config/boxxy
     '';

tests/modules/programs/boxxy/example-settings.nix

@@ -15,8 +15,6 @@ with lib;
       context = [ "/home/test_user/your_project_repo" ];
     }];
 
-    test.stubs.boxxy = { };
-
     nmt.script = ''
       boxxyyaml=home-files/.config/boxxy/boxxy.yaml
       assertFileExists $boxxyyaml

tests/modules/programs/broot/broot.nix

@@ -1,4 +1,4 @@
-{ ... }:
+{ realPkgs, ... }:
 
 {
   programs.broot = {
@@ -6,10 +6,7 @@
     settings.modal = true;
   };
 
-  tests.stubs = {
+  nixpkgs.overlays = [ (self: super: { inherit (realPkgs) broot hjson; }) ];
-    broot = { };
-    hjson = { };
-  };
 
   nmt.script = ''
     assertFileExists home-files/.config/broot/conf.toml

tests/modules/programs/browserpass/browserpass.nix

@@ -1,35 +1,32 @@
-{ config, lib, pkgs, ... }:
+{ realPkgs, ... }:
-
-with lib;
 
 {
-  config = {
+  programs.browserpass = {
-    programs.browserpass = {
+    enable = true;
-      enable = true;
+    browsers = [ "brave" "chrome" "chromium" "firefox" "librewolf" "vivaldi" ];
-      browsers =
-        [ "brave" "chrome" "chromium" "firefox" "librewolf" "vivaldi" ];
-    };
-
-    nmt.script = if pkgs.stdenv.hostPlatform.isDarwin then ''
-      for dir in "BraveSoftware/Brave-Browser" "Google/Chrome" "Chromium" "Mozilla" "LibreWolf" "Vivaldi"; do
-        assertFileExists "home-files/Library/Application Support/$dir/NativeMessagingHosts/com.github.browserpass.native.json"
-      done
-
-      for dir in "Google/Chrome" "Chromium" "Vivaldi"; do
-        assertFileExists "home-files/Library/Application Support/$dir/policies/managed/com.github.browserpass.native.json"
-      done
-    '' else ''
-      for dir in "BraveSoftware/Brave-Browser" "google-chrome" "chromium" "vivaldi"; do
-        assertFileExists "home-files/.config/$dir/NativeMessagingHosts/com.github.browserpass.native.json"
-      done
-
-      for dir in "google-chrome" "chromium" "vivaldi"; do
-        assertFileExists "home-files/.config/$dir/policies/managed/com.github.browserpass.native.json"
-      done
-
-      for dir in ".mozilla" ".librewolf"; do
-        assertFileExists "home-files/$dir/native-messaging-hosts/com.github.browserpass.native.json"
-      done
-    '';
   };
+
+  nixpkgs.overlays = [ (self: super: { inherit (realPkgs) browserpass; }) ];
+
+  nmt.script = if realPkgs.stdenv.hostPlatform.isDarwin then ''
+    for dir in "BraveSoftware/Brave-Browser" "Google/Chrome" "Chromium" "Mozilla" "LibreWolf" "Vivaldi"; do
+      assertFileExists "home-files/Library/Application Support/$dir/NativeMessagingHosts/com.github.browserpass.native.json"
+    done
+
+    for dir in "Google/Chrome" "Chromium" "Vivaldi"; do
+      assertFileExists "home-files/Library/Application Support/$dir/policies/managed/com.github.browserpass.native.json"
+    done
+  '' else ''
+    for dir in "BraveSoftware/Brave-Browser" "google-chrome" "chromium" "vivaldi"; do
+      assertFileExists "home-files/.config/$dir/NativeMessagingHosts/com.github.browserpass.native.json"
+    done
+
+    for dir in "google-chrome" "chromium" "vivaldi"; do
+      assertFileExists "home-files/.config/$dir/policies/managed/com.github.browserpass.native.json"
+    done
+
+    for dir in ".mozilla" ".librewolf"; do
+      assertFileExists "home-files/$dir/native-messaging-hosts/com.github.browserpass.native.json"
+    done
+  '';
 }

tests/modules/programs/btop/empty-settings.nix

@@ -1,10 +1,6 @@
-{ ... }:
-
 {
   programs.btop.enable = true;
 
-  test.stubs.btop = { };
-
   nmt.script = ''
     assertPathNotExists home-files/.config/btop
   '';

tests/modules/programs/carapace/bash.nix

@@ -1,5 +1,3 @@
-{ ... }:
-
 {
   programs = {
     carapace.enable = true;
@@ -9,6 +7,6 @@
   nmt.script = ''
     assertFileExists home-files/.bashrc
     assertFileRegex home-files/.bashrc \
-      'source <(/nix/store/.*carapace.*/bin/carapace _carapace bash)'
+      'source <(@carapace@/bin/carapace _carapace bash)'
   '';
 }

tests/modules/programs/carapace/fish.nix

@@ -1,11 +1,13 @@
-{ ... }:
+{ config, lib, realPkgs, ... }:
 
-{
+lib.mkIf config.test.enableBig {
   programs = {
     carapace.enable = true;
     fish.enable = true;
   };
 
+  nixpkgs.overlays = [ (self: super: { inherit (realPkgs) carapace; }) ];
+
   nmt.script = ''
     assertFileExists home-files/.config/fish/config.fish
     assertFileRegex home-files/.config/fish/config.fish \

tests/modules/programs/carapace/zsh.nix

@@ -1,5 +1,3 @@
-{ ... }:
-
 {
   programs = {
     carapace.enable = true;
@@ -9,6 +7,6 @@
   nmt.script = ''
     assertFileExists home-files/.zshrc
     assertFileRegex home-files/.zshrc \
-      'source <(/nix/store/.*carapace.*/bin/carapace _carapace zsh)'
+      'source <(@carapace@/bin/carapace _carapace zsh)'
   '';
 }

tests/modules/programs/cmus/cmus.nix

@@ -1,5 +1,3 @@
-{ ... }:
-
 {
   programs.cmus = {
     enable = true;
@@ -7,8 +5,6 @@
     extraConfig = "test";
   };
 
-  test.stubs.cmus = { };
-
   nmt.script = ''
     assertFileContent \
       home-files/.config/cmus/rc \

tests/modules/programs/comodoro/comodoro.nix

@@ -1,5 +1,3 @@
-{ ... }:
-
 {
   programs.comodoro = {
     enable = true;
@@ -26,8 +24,6 @@
     };
   };
 
-  test.stubs.comodoro = { };
-
   nmt.script = ''
     assertFileExists home-files/.config/comodoro/config.toml
     assertFileContent home-files/.config/comodoro/config.toml ${./expected.toml}

tests/modules/programs/direnv/bash.nix

@@ -1,17 +1,11 @@
-{ config, lib, pkgs, ... }:
-
-with lib;
-
 {
-  config = {
+  programs.bash.enable = true;
-    programs.bash.enable = true;
+  programs.direnv.enable = true;
-    programs.direnv.enable = true;
 
-    nmt.script = ''
+  nmt.script = ''
-      assertFileExists home-files/.bashrc
+    assertFileExists home-files/.bashrc
-      assertFileRegex \
+    assertFileRegex \
-        home-files/.bashrc \
+      home-files/.bashrc \
-        'eval "\$(/nix/store/.*direnv.*/bin/direnv hook bash)"'
+      'eval "\$(@direnv@/bin/direnv hook bash)"'
-    '';
+  '';
-  };
 }

tests/modules/programs/direnv/nix-direnv.nix

@@ -1,16 +1,14 @@
-{ config, lib, pkgs, ... }:
+{ realPkgs, ... }:
-
-with lib;
 
 {
-  config = {
+  programs.bash.enable = true;
-    programs.bash.enable = true;
+  programs.direnv.enable = true;
-    programs.direnv.enable = true;
+  programs.direnv.nix-direnv.enable = true;
-    programs.direnv.nix-direnv.enable = true;
 
-    nmt.script = ''
+  nixpkgs.overlays = [ (_: _: { inherit (realPkgs) nix-direnv; }) ];
-      assertFileExists home-files/.bashrc
+
-      assertFileExists home-files/.config/direnv/lib/hm-nix-direnv.sh
+  nmt.script = ''
-    '';
+    assertFileExists home-files/.bashrc
-  };
+    assertFileExists home-files/.config/direnv/lib/hm-nix-direnv.sh
+  '';
 }

tests/modules/programs/direnv/nushell.nix

@@ -4,8 +4,6 @@
   programs.nushell.enable = true;
   programs.direnv.enable = true;
 
-  test.stubs.nushell = { };
-
   nmt.script = let
     configFile = if pkgs.stdenv.isDarwin && !config.xdg.enable then
       "home-files/Library/Application Support/nushell/config.nu"
@@ -13,6 +11,6 @@
       "home-files/.config/nushell/config.nu";
   in ''
     assertFileExists "${configFile}"
-    assertFileRegex "${configFile}" '/nix/store/.*direnv.*/bin/direnv export json'
+    assertFileRegex "${configFile}" '@direnv@/bin/direnv export json'
   '';
 }

tests/modules/programs/direnv/stdlib-and-nix-direnv.nix

@@ -1,21 +1,19 @@
-{ config, lib, pkgs, ... }:
+{ realPkgs, ... }:
-
-with lib;
 
 let expectedContent = "something important";
 in {
-  config = {
+  programs.bash.enable = true;
-    programs.bash.enable = true;
+  programs.direnv.enable = true;
-    programs.direnv.enable = true;
+  programs.direnv.nix-direnv.enable = true;
-    programs.direnv.nix-direnv.enable = true;
+  programs.direnv.stdlib = expectedContent;
-    programs.direnv.stdlib = expectedContent;
 
-    nmt.script = ''
+  nixpkgs.overlays = [ (_: _: { inherit (realPkgs) nix-direnv; }) ];
-      assertFileExists home-files/.bashrc
+
-      assertFileExists home-files/.config/direnv/lib/hm-nix-direnv.sh
+  nmt.script = ''
-      assertFileRegex \
+    assertFileExists home-files/.bashrc
-        home-files/.config/direnv/direnvrc \
+    assertFileExists home-files/.config/direnv/lib/hm-nix-direnv.sh
-        '${expectedContent}'
+    assertFileRegex \
-    '';
+      home-files/.config/direnv/direnvrc \
-  };
+      '${expectedContent}'
+  '';
 }

tests/modules/programs/direnv/stdlib.nix

@@ -1,20 +1,14 @@
-{ config, lib, pkgs, ... }:
-
-with lib;
-
 let expectedContent = "something important";
 in {
-  config = {
+  programs.bash.enable = true;
-    programs.bash.enable = true;
+  programs.direnv.enable = true;
-    programs.direnv.enable = true;
+  programs.direnv.stdlib = expectedContent;
-    programs.direnv.stdlib = expectedContent;
 
-    nmt.script = ''
+  nmt.script = ''
-      assertPathNotExists home-files/.config/direnv/lib/hm-nix-direnv.sh
+    assertPathNotExists home-files/.config/direnv/lib/hm-nix-direnv.sh
-      assertFileExists home-files/.bashrc
+    assertFileExists home-files/.bashrc
-      assertFileRegex \
+    assertFileRegex \
-        home-files/.config/direnv/direnvrc \
+      home-files/.config/direnv/direnvrc \
-        '${expectedContent}'
+      '${expectedContent}'
-    '';
+  '';
-  };
 }

tests/modules/programs/fastfetch/basic-configuration.nix

@@ -29,8 +29,6 @@
     };
   };
 
-  test.stubs.fastfetch = { };
-
   nmt.script = let configFile = "home-files/.config/fastfetch/config.jsonc";
   in ''
     assertFileExists "${configFile}"

tests/modules/programs/fastfetch/default-configuration.nix

@@ -1,8 +1,6 @@
 {
   programs.fastfetch.enable = true;
 
-  test.stubs.fastfetch = { };
-
   nmt.script = ''
     assertPathNotExists "home-files/.config/fastfetch/config.jsonc"
   '';

tests/modules/programs/feh/feh-bindings.nix

@@ -1,32 +1,26 @@
-{ pkgs, ... }:
-
 {
-  config = {
+  programs.feh.enable = true;
-    programs.feh.enable = true;
 
-    programs.feh.buttons = {
+  programs.feh.buttons = {
-      zoom_in = null;
+    zoom_in = null;
-      zoom_out = 4;
+    zoom_out = 4;
-      next_img = "C-4";
+    next_img = "C-4";
-      prev_img = [ 3 "C-3" ];
+    prev_img = [ 3 "C-3" ];
-    };
-
-    programs.feh.keybindings = {
-      zoom_in = null;
-      zoom_out = "minus";
-      prev_img = [ "h" "Left" ];
-    };
-
-    test.stubs.feh = { };
-
-    nmt.script = ''
-      assertFileContent \
-        home-files/.config/feh/buttons \
-        ${./feh-bindings-expected-buttons}
-
-      assertFileContent \
-        home-files/.config/feh/keys \
-        ${./feh-bindings-expected-keys}
-    '';
   };
+
+  programs.feh.keybindings = {
+    zoom_in = null;
+    zoom_out = "minus";
+    prev_img = [ "h" "Left" ];
+  };
+
+  nmt.script = ''
+    assertFileContent \
+      home-files/.config/feh/buttons \
+      ${./feh-bindings-expected-buttons}
+
+    assertFileContent \
+      home-files/.config/feh/keys \
+      ${./feh-bindings-expected-keys}
+  '';
 }

tests/modules/programs/feh/feh-empty-settings.nix

@@ -1,15 +1,9 @@
-{ pkgs, ... }:
-
 {
-  config = {
+  programs.feh.enable = true;
-    programs.feh.enable = true;
 
-    test.stubs.feh = { };
+  nmt.script = ''
-
+    assertPathNotExists home-files/.config/feh/buttons
-    nmt.script = ''
+    assertPathNotExists home-files/.config/feh/keys
-      assertPathNotExists home-files/.config/feh/buttons
+    assertPathNotExists home-files/.config/feh/themes
-      assertPathNotExists home-files/.config/feh/keys
+  '';
-      assertPathNotExists home-files/.config/feh/themes
-    '';
-  };
 }

tests/modules/programs/feh/feh-themes.nix

@@ -1,32 +1,26 @@
-{ pkgs, ... }:
-
 {
-  config = {
+  programs.feh.enable = true;
-    programs.feh.enable = true;
 
-    programs.feh.themes = {
+  programs.feh.themes = {
-      feh = [ "--image-bg" "black" ];
+    feh = [ "--image-bg" "black" ];
-      webcam = [ "--multiwindow" "--reload" "20" ];
+    webcam = [ "--multiwindow" "--reload" "20" ];
-      present = [ "--full-screen" "--sort" "name" "--hide-pointer" ];
+    present = [ "--full-screen" "--sort" "name" "--hide-pointer" ];
-      booth = [ "--full-screen" "--hide-pointer" "--slideshow-delay" "20" ];
+    booth = [ "--full-screen" "--hide-pointer" "--slideshow-delay" "20" ];
-      imagemap = [
+    imagemap = [
-        "-rVq"
+      "-rVq"
-        "--thumb-width"
+      "--thumb-width"
-        "40"
+      "40"
-        "--thumb-height"
+      "--thumb-height"
-        "30"
+      "30"
-        "--index-info"
+      "--index-info"
-        "%n\\n%wx%h"
+      "%n\\n%wx%h"
-      ];
+    ];
-      example = [ "--info" "foo bar" ];
+    example = [ "--info" "foo bar" ];
-    };
-
-    test.stubs.feh = { };
-
-    nmt.script = ''
-      assertFileContent \
-        home-files/.config/feh/themes \
-        ${./feh-themes-expected}
-    '';
   };
+
+  nmt.script = ''
+    assertFileContent \
+      home-files/.config/feh/themes \
+      ${./feh-themes-expected}
+  '';
 }

tests/modules/programs/firefox/final-package.nix

@@ -1,25 +1,21 @@
 modulePath:
-{ config, lib, pkgs, ... }:
+{ config, lib, realPkgs, ... }:
 
 let
 
   cfg = lib.getAttrFromPath modulePath config;
 
-  firefoxMockOverlay = import ./setup-firefox-mock-overlay.nix modulePath;
+in lib.mkIf config.test.enableBig
+(lib.setAttrByPath modulePath { enable = true; } // {
+  home.stateVersion = "19.09";
 
-in {
+  _module.args.pkgs = lib.mkForce realPkgs;
-  imports = [ firefoxMockOverlay ];
 
-  config = lib.mkIf config.test.enableBig
+  nmt.script = ''
-    (lib.setAttrByPath modulePath { enable = true; } // {
+    package=${cfg.package}
-      home.stateVersion = "19.09";
+    finalPackage=${cfg.finalPackage}
-
+    if [[ $package != $finalPackage ]]; then
-      nmt.script = ''
+      fail "Expected finalPackage ($finalPackage) to equal package ($package)"
-        package=${cfg.package}
+    fi
-        finalPackage=${cfg.finalPackage}
+  '';
-        if [[ $package != $finalPackage ]]; then
+})
-          fail "Expected finalPackage ($finalPackage) to equal package ($package)"
-        fi
-      '';
-    });
-}

tests/modules/programs/firefox/setup-firefox-mock-overlay.nix

@@ -1,30 +1,36 @@
 modulePath:
-{ config, lib, pkgs, ... }:
+{ config, lib, realPkgs, ... }:
-
-with lib;
 
 let
 
-  cfg = getAttrFromPath modulePath config;
+  cfg = lib.getAttrFromPath modulePath config;
 
 in {
-  nixpkgs.overlays = [
+  test.stubs = let unwrappedName = "${cfg.wrappedPackageName}-unwrapped";
-    (self: super: {
+  in {
-      "${cfg.wrappedPackageName}-unwrapped" =
+    "${unwrappedName}" = {
-        pkgs.runCommandLocal "${cfg.wrappedPackageName}-0" {
+      name = unwrappedName;
-          meta.description = "I pretend to be ${cfg.name}";
+      extraAttrs = {
-          passthru.gtk3 = null;
+        binaryName = cfg.wrappedPackageName;
-        } ''
+        gtk3 = null;
-          mkdir -p "$out"/{bin,lib}
+        meta.description = "I pretend to be ${cfg.name}";
-          touch "$out/bin/${cfg.wrappedPackageName}"
+      };
-          chmod 755 "$out/bin/${cfg.wrappedPackageName}"
+      outPath = null;
-        '';
+      buildScript = ''
+        echo BUILD
+        mkdir -p "$out"/{bin,lib}
+        touch "$out/bin/${cfg.wrappedPackageName}"
+        chmod 755 "$out/bin/${cfg.wrappedPackageName}"
+      '';
+    };
 
-      chrome-gnome-shell =
+    chrome-gnome-shell = {
-        pkgs.runCommandLocal "dummy-chrome-gnome-shell" { } ''
+      buildScript = ''
-          mkdir -p $out/lib/mozilla/native-messaging-hosts
+        mkdir -p $out/lib/mozilla/native-messaging-hosts
-          touch $out/lib/mozilla/native-messaging-hosts/dummy
+        touch $out/lib/mozilla/native-messaging-hosts/dummy
-        '';
+      '';
-    })
+    };
-  ];
+  };
+
+  nixpkgs.overlays = [ (_: _: { inherit (realPkgs) mozlz4a; }) ];
 }

tests/modules/programs/foot/empty-settings.nix

@@ -1,15 +1,7 @@
-{ config, lib, pkgs, ... }:
-
-with lib;
-
 {
-  config = {
+  programs.foot.enable = true;
-    programs.foot.enable = true;
 
-    test.stubs.foot = { };
+  nmt.script = ''
-
+    assertPathNotExists home-files/.config/foot
-    nmt.script = ''
+  '';
-      assertPathNotExists home-files/.config/foot
-    '';
-  };
 }

tests/modules/programs/foot/example-settings.nix

@@ -1,29 +1,25 @@
-{ config, lib, pkgs, ... }:
+{ config, ... }:
-
-with lib;
 
 {
-  config = {
+  programs.foot = {
-    programs.foot = {
+    enable = true;
-      enable = true;
+    package = config.lib.test.mkStubPackage { };
-      package = config.lib.test.mkStubPackage { };
 
-      settings = {
+    settings = {
-        main = {
+      main = {
-          term = "xterm-256color";
+        term = "xterm-256color";
 
-          font = "Fira Code:size=11";
+        font = "Fira Code:size=11";
-          dpi-aware = "yes";
+        dpi-aware = "yes";
-        };
-
-        mouse = { hide-when-typing = "yes"; };
       };
-    };
 
-    nmt.script = ''
+      mouse = { hide-when-typing = "yes"; };
-      assertFileContent \
+    };
-        home-files/.config/foot/foot.ini \
-        ${./example-settings-expected.ini}
-    '';
   };
+
+  nmt.script = ''
+    assertFileContent \
+      home-files/.config/foot/foot.ini \
+      ${./example-settings-expected.ini}
+  '';
 }

tests/modules/programs/foot/systemd-user-service.nix

@@ -1,19 +1,14 @@
-{ config, lib, pkgs, ... }:
-
 {
-  config = {
+  programs.foot = {
-    programs.foot = {
+    enable = true;
-      package = config.lib.test.mkStubPackage { outPath = "@foot@"; };
+    server.enable = true;
-      enable = true;
-      server.enable = true;
-    };
-
-    nmt.script = ''
-      assertPathNotExists home-files/.config/foot/foot.ini
-
-      assertFileContent \
-        home-files/.config/systemd/user/foot.service \
-        ${./systemd-user-service-expected.service}
-    '';
   };
+
+  nmt.script = ''
+    assertPathNotExists home-files/.config/foot/foot.ini
+
+    assertFileContent \
+      home-files/.config/systemd/user/foot.service \
+      ${./systemd-user-service-expected.service}
+  '';
 }

tests/modules/programs/freetube/basic-configuration.nix

@@ -1,5 +1,3 @@
-{ config, pkgs, ... }:
-
 {
   programs.freetube = {
     enable = true;
@@ -17,8 +15,6 @@
     };
   };
 
-  test.stubs.freetube = { };
-
   nmt.script = ''
     assertFileExists home-files/.config/FreeTube/hm_settings.db
     assertFileContent home-files/.config/FreeTube/hm_settings.db \

tests/modules/programs/fuzzel/empty-settings.nix

@@ -1,10 +1,6 @@
-{ ... }:
-
 {
   programs.fuzzel.enable = true;
 
-  test.stubs.fuzzel = { };
-
   nmt.script = ''
     assertPathNotExists home-files/.config/fuzzel
   '';

tests/modules/programs/gallery-dl/gallery-dl.nix

@@ -12,8 +12,6 @@
     };
   };
 
-  test.stubs.gallery-dl = { };
-
   nmt.script = ''
     assertFileContent home-files/.config/gallery-dl/config.json \
     ${builtins.toFile "gallery-dl-expected-settings.json" ''

tests/modules/programs/gh-dash/config.nix

@@ -1,5 +1,3 @@
-{ ... }:
-
 {
   programs.gh-dash = {
     enable = true;
@@ -11,8 +9,6 @@
     };
   };
 
-  test.stubs.gh = { };
-
   nmt.script = ''
     assertFileExists home-files/.config/gh-dash/config.yml
     assertFileContent home-files/.config/gh-dash/config.yml ${

tests/modules/programs/gh/config-file.nix

@@ -1,26 +1,20 @@
-{ config, lib, pkgs, ... }:
-
 {
-  config = {
+  programs.gh = {
-    programs.gh = {
+    enable = true;
-      enable = true;
+    settings.aliases = { co = "pr checkout"; };
-      settings.aliases = { co = "pr checkout"; };
+    settings.editor = "vim";
-      settings.editor = "vim";
-    };
-
-    test.stubs.gh = { };
-
-    nmt.script = ''
-      assertFileExists home-files/.config/gh/config.yml
-      assertFileContent home-files/.config/gh/config.yml ${
-        builtins.toFile "config-file.yml" ''
-          aliases:
-            co: pr checkout
-          editor: vim
-          git_protocol: https
-          version: '1'
-        ''
-      }
-    '';
   };
+
+  nmt.script = ''
+    assertFileExists home-files/.config/gh/config.yml
+    assertFileContent home-files/.config/gh/config.yml ${
+      builtins.toFile "config-file.yml" ''
+        aliases:
+          co: pr checkout
+        editor: vim
+        git_protocol: https
+        version: '1'
+      ''
+    }
+  '';
 }

tests/modules/programs/gh/credential-helper.nix

@@ -1,5 +1,3 @@
-{ config, lib, pkgs, ... }:
-
 {
   programs.gh = {
     enable = true;
@@ -11,8 +9,6 @@
 
   programs.git.enable = true;
 
-  test.stubs.gh = { };
-
   nmt.script = ''
     assertFileExists home-files/.config/git/config
     assertFileContent home-files/.config/git/config \

tests/modules/programs/gh/extensions.nix

@@ -1,4 +1,4 @@
-{ config, lib, pkgs, ... }:
+{ pkgs, ... }:
 
 {
   programs.gh = {
@@ -7,7 +7,6 @@
   };
 
   test.stubs = {
-    gh = { };
     gh-eco = {
       name = "gh-eco";
       buildScript = ''

tests/modules/programs/gh/warnings.nix

@@ -1,36 +1,32 @@
-{ config, options, lib, pkgs, ... }:
+{ options, lib, ... }:
 
 {
-  config = {
+  programs.gh = {
-    programs.gh = {
+    enable = true;
-      enable = true;
+    aliases = { co = "pr checkout"; };
-      aliases = { co = "pr checkout"; };
+    editor = "vim";
-      editor = "vim";
-    };
-
-    test.stubs.gh = { };
-
-    test.asserts.warnings.expected = [
-      "The option `programs.gh.editor' defined in ${
-        lib.showFiles options.programs.gh.editor.files
-      } has been renamed to `programs.gh.settings.editor'."
-      "The option `programs.gh.aliases' defined in ${
-        lib.showFiles options.programs.gh.aliases.files
-      } has been renamed to `programs.gh.settings.aliases'."
-    ];
-    test.asserts.warnings.enable = true;
-
-    nmt.script = ''
-      assertFileExists home-files/.config/gh/config.yml
-      assertFileContent home-files/.config/gh/config.yml ${
-        builtins.toFile "config-file.yml" ''
-          aliases:
-            co: pr checkout
-          editor: vim
-          git_protocol: https
-          version: '1'
-        ''
-      }
-    '';
   };
+
+  test.asserts.warnings.expected = [
+    "The option `programs.gh.editor' defined in ${
+      lib.showFiles options.programs.gh.editor.files
+    } has been renamed to `programs.gh.settings.editor'."
+    "The option `programs.gh.aliases' defined in ${
+      lib.showFiles options.programs.gh.aliases.files
+    } has been renamed to `programs.gh.settings.aliases'."
+  ];
+  test.asserts.warnings.enable = true;
+
+  nmt.script = ''
+    assertFileExists home-files/.config/gh/config.yml
+    assertFileContent home-files/.config/gh/config.yml ${
+      builtins.toFile "config-file.yml" ''
+        aliases:
+          co: pr checkout
+        editor: vim
+        git_protocol: https
+        version: '1'
+      ''
+    }
+  '';
 }

tests/modules/programs/ghostty/empty-settings.nix

@@ -1,6 +1,6 @@
 {
   programs.ghostty.enable = true;
-  test.stubs.ghostty = { };
+
   nmt.script = ''
     assertPathNotExists home-files/.config/ghostty/config
   '';

tests/modules/programs/ghostty/example-theme.nix

@@ -1,7 +1,6 @@
-{ config, ... }: {
+{
   programs.ghostty = {
     enable = true;
-    package = config.lib.test.mkStubPackage { };
 
     themes = {
       catppuccin-mocha = {

tests/modules/programs/git-cliff/example-settings.nix

@@ -1,7 +1,3 @@
-{ config, lib, pkgs, ... }:
-
-with lib;
-
 {
   programs.git-cliff = {
     enable = true;
@@ -13,8 +9,6 @@ with lib;
     };
   };
 
-  test.stubs.git-cliff = { };
-
   nmt.script = ''
     assertFileContent \
       home-files/.config/git-cliff/cliff.toml \

tests/modules/programs/git-credential-oauth/basic.nix

@@ -1,12 +1,10 @@
-{ config, pkgs, ... }:
+{ config, ... }:
 
 {
   programs.git-credential-oauth = { enable = true; };
 
   programs.git = { enable = true; };
 
-  test.stubs.git-credential-oauth = { };
-
   nmt.script = ''
     assertFileExists home-files/.config/git/config
     assertFileContains \

tests/modules/programs/git-credential-oauth/extra-flags.nix

@@ -1,4 +1,4 @@
-{ config, pkgs, ... }:
+{ config, ... }:
 
 {
   programs.git-credential-oauth = {
@@ -8,8 +8,6 @@
 
   programs.git = { enable = true; };
 
-  test.stubs.git-credential-oauth = { };
-
   nmt.script = ''
     assertFileExists home-files/.config/git/config
     assertFileContains \

tests/modules/programs/git/git-with-email.nix

@@ -1,40 +1,36 @@
-{ config, lib, pkgs, ... }:
+{ realPkgs, ... }:
-
-with lib;
 
 {
   imports = [ ../../accounts/email-test-accounts.nix ];
 
-  config = {
+  accounts.email.accounts.hm-account.smtp.tls.certificatesFile =
-    accounts.email.accounts.hm-account.smtp.tls.certificatesFile =
+    "/etc/test/certificates.crt";
-      "/etc/test/certificates.crt";
-    programs.git = {
-      enable = true;
-      package = pkgs.gitMinimal;
-      userEmail = "hm@example.com";
-      userName = "H. M. Test";
-    };
 
-    home.stateVersion = "20.09";
+  programs.git = {
-
+    enable = true;
-    nmt.script = ''
+    userEmail = "hm@example.com";
-      function assertGitConfig() {
+    userName = "H. M. Test";
-        local value
-        value=$(${pkgs.gitMinimal}/bin/git config \
-          --file $TESTED/home-files/.config/git/config \
-          --get $1)
-        if [[ $value != $2 ]]; then
-          fail "Expected option '$1' to have value '$2' but it was '$value'"
-        fi
-      }
-
-      assertFileExists home-files/.config/git/config
-      assertFileContent home-files/.config/git/config ${
-        ./git-with-email-expected.conf
-      }
-
-      assertGitConfig "sendemail.hm@example.com.from" "H. M. Test <hm@example.com>"
-      assertGitConfig "sendemail.hm-account.from" "H. M. Test Jr. <hm@example.org>"
-    '';
   };
+
+  home.stateVersion = "20.09";
+
+  nmt.script = ''
+    function assertGitConfig() {
+      local value
+      value=$(${realPkgs.gitMinimal}/bin/git config \
+        --file $TESTED/home-files/.config/git/config \
+        --get $1)
+      if [[ $value != $2 ]]; then
+        fail "Expected option '$1' to have value '$2' but it was '$value'"
+      fi
+    }
+
+    assertFileExists home-files/.config/git/config
+    assertFileContent home-files/.config/git/config ${
+      ./git-with-email-expected.conf
+    }
+
+    assertGitConfig "sendemail.hm@example.com.from" "H. M. Test <hm@example.com>"
+    assertGitConfig "sendemail.hm-account.from" "H. M. Test Jr. <hm@example.org>"
+  '';
 }

tests/modules/programs/git/git-with-hooks.nix

@@ -1,4 +1,4 @@
-{ pkgs, ... }:
+{ realPkgs, ... }:
 
 {
   programs.git = {
@@ -8,7 +8,7 @@
 
   nmt.script = ''
     function getGitConfig() {
-      ${pkgs.gitMinimal}/bin/git config \
+      ${realPkgs.gitMinimal}/bin/git config \
         --file $TESTED/home-files/.config/git/config \
         --get $1
     }

tests/modules/programs/git/git-with-msmtp.nix

@@ -1,43 +1,36 @@
-{ config, lib, pkgs, ... }:
+{ pkgs, realPkgs, ... }:
-
-with lib;
 
 {
   imports = [ ../../accounts/email-test-accounts.nix ];
 
-  config = {
+  accounts.email.accounts."hm@example.com".msmtp.enable = true;
-    accounts.email.accounts."hm@example.com".msmtp.enable = true;
 
-    programs.git = {
+  programs.git = {
-      enable = true;
+    enable = true;
-      package = pkgs.gitMinimal;
+    userEmail = "hm@example.com";
-      userEmail = "hm@example.com";
+    userName = "H. M. Test";
-      userName = "H. M. Test";
-    };
-
-    home.stateVersion = "20.09";
-
-    test.stubs.msmtp = { };
-
-    nmt.script = ''
-      function assertGitConfig() {
-        local value
-        value=$(${pkgs.gitMinimal}/bin/git config \
-          --file $TESTED/home-files/.config/git/config \
-          --get $1)
-        if [[ $value != $2 ]]; then
-          fail "Expected option '$1' to have value '$2' but it was '$value'"
-        fi
-      }
-
-      assertFileExists home-files/.config/git/config
-      assertFileContent home-files/.config/git/config \
-        ${./git-with-msmtp-expected.conf}
-
-      assertGitConfig "sendemail.hm@example.com.from" "H. M. Test <hm@example.com>"
-      assertGitConfig "sendemail.hm-account.from" "H. M. Test Jr. <hm@example.org>"
-      assertGitConfig "sendemail.hm@example.com.smtpServer" "${pkgs.msmtp}/bin/msmtp"
-      assertGitConfig "sendemail.hm@example.com.envelopeSender" "auto"
-    '';
   };
+
+  home.stateVersion = "20.09";
+
+  nmt.script = ''
+    function assertGitConfig() {
+      local value
+      value=$(${realPkgs.gitMinimal}/bin/git config \
+        --file $TESTED/home-files/.config/git/config \
+        --get $1)
+      if [[ $value != $2 ]]; then
+        fail "Expected option '$1' to have value '$2' but it was '$value'"
+      fi
+    }
+
+    assertFileExists home-files/.config/git/config
+    assertFileContent home-files/.config/git/config \
+      ${./git-with-msmtp-expected.conf}
+
+    assertGitConfig "sendemail.hm@example.com.from" "H. M. Test <hm@example.com>"
+    assertGitConfig "sendemail.hm-account.from" "H. M. Test Jr. <hm@example.org>"
+    assertGitConfig "sendemail.hm@example.com.smtpServer" "${pkgs.msmtp}/bin/msmtp"
+    assertGitConfig "sendemail.hm@example.com.envelopeSender" "auto"
+  '';
 }