tests: test per-user home.useUserPackages

tests/integration/nixos/basics.nix

@@ -4,7 +4,7 @@
   name = "nixos-basics";
   meta.maintainers = [ pkgs.lib.maintainers.rycee ];
 
-  nodes.machine = { config, ... }:
+  nodes.machine = { config, pkgs, ... }:
     let inherit (config.home-manager.users) bob;
     in {
       imports = [ ../../../nixos ]; # Import the HM NixOS module.
@@ -38,10 +38,13 @@
         uid = 1000;
       };
 
+      home-manager.useUserPackages = true;
+
       home-manager.users = let
         common = {
           home.stateVersion = "24.11";
           home.file.test.text = "testfile";
+          home.packages = [ pkgs.hello ];
           # Enable a light-weight systemd service.
           services.pueue.enable = true;
         };
@@ -54,6 +57,7 @@
           home.stateVersion = "24.11";
           home.username = lib.mkForce name;
           home.homeDirectory = lib.mkForce "/var/tmp/hm/home/bob";
+          home.useUserPackages = false;
         };
       };
     };
@@ -142,6 +146,9 @@
           expected = "testfile"
           assert actual == expected, f"expected {path} to contain {expected}, but got {actual}"
 
+        with subtest(f"Command from `home.packages` (user {user})"):
+          succeed_as_user(user, "hello")
+
         with subtest(f"Pueue service (user {user})"):
           with user_login(machine, user, "${password}"):
             actual = succeed_as_user(user, "pueue status")

tests/modules/home-environment/default.nix

@@ -2,4 +2,5 @@
   home-session-path = ./session-path.nix;
   home-session-search-variables = ./session-search-variables.nix;
   home-session-variables = ./session-variables.nix;
+  home-use-user-packages = ./use-user-packages.nix;
 }

tests/modules/home-environment/use-user-packages.nix

@@ -0,0 +1,7 @@
+{
+  home.useUserPackages = true;
+
+  test.asserts.warnings.expected = [
+    "You have enabled `home.useUserPackages`, but this option has no effect outside of NixOS configurations."
+  ];
+}