5 files changed, 31 insertions, 0 deletions
diff --git a/tests/lang/parse-fail-dup-attrs-1.nix b/tests/lang/parse-fail-dup-attrs-1.nix
new file mode 100644
index 000000000000..2c02317d2a19
--- /dev/null
+++ b/tests/lang/parse-fail-dup-attrs-1.nix
@@ -0,0 +1,4 @@
+{ x = 123;
+  y = 456;
+  x = 789;
+}
diff --git a/tests/lang/parse-fail-dup-attrs-2.nix b/tests/lang/parse-fail-dup-attrs-2.nix
new file mode 100644
index 000000000000..864d9865e07d
--- /dev/null
+++ b/tests/lang/parse-fail-dup-attrs-2.nix
@@ -0,0 +1,13 @@
+let {
+
+  as = {
+    x = 123;
+    y = 456;
+  };
+
+  bs = {
+    x = 789;
+    inherit (as) x;
+  };
+  
+}
diff --git a/tests/lang/parse-fail-dup-attrs-3.nix b/tests/lang/parse-fail-dup-attrs-3.nix
new file mode 100644
index 000000000000..114d19779f86
--- /dev/null
+++ b/tests/lang/parse-fail-dup-attrs-3.nix
@@ -0,0 +1,13 @@
+let {
+
+  as = {
+    x = 123;
+    y = 456;
+  };
+
+  bs = rec {
+    x = 789;
+    inherit (as) x;
+  };
+  
+}
diff --git a/tests/lang/parse-fail-dup-formals.nix b/tests/lang/parse-fail-dup-formals.nix
new file mode 100644
index 000000000000..a0edd91a9666
--- /dev/null
+++ b/tests/lang/parse-fail-dup-formals.nix
@@ -0,0 +1 @@
+{x, y, x}: x
\ No newline at end of file
diff --git a/tests/lang/parse-fail-1.nix b/tests/lang/parse-fail-undef-var.nix
index 7b63008110db..7b63008110db 100644
--- a/tests/lang/parse-fail-1.nix
+++ b/tests/lang/parse-fail-undef-var.nix