* Some syntactic sugar for attribute sets: allow {x.y.z = ...;} as a

  shorthand for {x = {y = {z = ...;};};}.  This is especially useful
  for NixOS configuration files, e.g.

    {
      services = {
        sshd = {
          enable = true;
          port = 2022;
        };
      };
    }

  can now be written as

    {
      services.sshd.enable = true;
      services.sshd.port = 2022;
    }

  However, it is currently not permitted to write
  
    {
      services.sshd = {enable = true;};
      services.sshd.port = 2022;
    }

  as this is considered a duplicate definition of `services.sshd'.

1 files changed, 4 insertions, 0 deletions

diff --git a/tests/lang/parse-fail-dup-attrs-5.nix b/tests/lang/parse-fail-dup-attrs-5.nix
new file mode 100644
index 000000000000..f4b9efd0c596
--- /dev/null
+++ b/tests/lang/parse-fail-dup-attrs-5.nix
@@ -0,0 +1,4 @@
+{
+  services.ssh = { enable = true; };
+  services.ssh.port = 23;
+}