diff --git a/tvix/eval/src/tests/tvix_tests/eval-okay-let-identifiers.exp b/tvix/eval/src/tests/tvix_tests/eval-okay-let-identifiers.exp
new file mode 100644
index 000000000..5776134d0
--- /dev/null
+++ b/tvix/eval/src/tests/tvix_tests/eval-okay-let-identifiers.exp
@@ -0,0 +1 @@
+[ 1 2 3 ]
diff --git a/tvix/eval/src/tests/tvix_tests/eval-okay-let-identifiers.nix b/tvix/eval/src/tests/tvix_tests/eval-okay-let-identifiers.nix
new file mode 100644
index 000000000..b6c37c34f
--- /dev/null
+++ b/tvix/eval/src/tests/tvix_tests/eval-okay-let-identifiers.nix
@@ -0,0 +1,5 @@
+let
+  a = 1;
+  "b" = 2;
+  ${"c"} = 3;
+in [ a b c ]
diff --git a/tvix/eval/src/tests/tvix_tests/eval-okay-let-sibling-access.exp b/tvix/eval/src/tests/tvix_tests/eval-okay-let-sibling-access.exp
new file mode 100644
index 000000000..00750edc0
--- /dev/null
+++ b/tvix/eval/src/tests/tvix_tests/eval-okay-let-sibling-access.exp
@@ -0,0 +1 @@
+3
diff --git a/tvix/eval/src/tests/tvix_tests/eval-okay-let-sibling-access.nix b/tvix/eval/src/tests/tvix_tests/eval-okay-let-sibling-access.nix
new file mode 100644
index 000000000..7a65a5b1c
--- /dev/null
+++ b/tvix/eval/src/tests/tvix_tests/eval-okay-let-sibling-access.nix
@@ -0,0 +1,5 @@
+let
+  a = 1;
+  b = 2;
+  c = a + b;
+in c
diff --git a/tvix/eval/src/tests/tvix_tests/eval-okay-simple-let.exp b/tvix/eval/src/tests/tvix_tests/eval-okay-simple-let.exp
new file mode 100644
index 000000000..00750edc0
--- /dev/null
+++ b/tvix/eval/src/tests/tvix_tests/eval-okay-simple-let.exp
@@ -0,0 +1 @@
+3
diff --git a/tvix/eval/src/tests/tvix_tests/eval-okay-simple-let.nix b/tvix/eval/src/tests/tvix_tests/eval-okay-simple-let.nix
new file mode 100644
index 000000000..b440a220f
--- /dev/null
+++ b/tvix/eval/src/tests/tvix_tests/eval-okay-simple-let.nix
@@ -0,0 +1,4 @@
+let
+  a = 1;
+  b = 2;
+in a + b