fixes

Signed-off-by: Ayush Kamat <[email protected]>

Author: ayushkamat

CHANGELOG.md

@@ -16,6 +16,12 @@ Types of changes
 
 # Latch SDK Changelog
 
+## 2.66.3 - 2025-08-07
+
+### Fixed
+
+* Additional bug where `latch preview` would not correctly parse parameters without default values
+
 ## 2.66.2 - 2025-08-06
 
 ### Fixed

pyproject.toml

@@ -12,7 +12,7 @@ include = ["src/**/*.py", "src/**/py.typed", "src/latch_cli/services/init/*"]
 
 [project]
 name = "latch"
-version = "2.66.2"
+version = "2.66.3"
 description = "The Latch SDK"
 authors = [{ name = "Kenny Workman", email = "[email protected]" }]
 maintainers = [{ name = "Ayush Kamat", email = "[email protected]" }]

src/latch_cli/services/preview.py

@@ -7,7 +7,7 @@
 import click
 import gql
 from flytekit.core.context_manager import FlyteContextManager
-from flytekit.core.type_engine import TypeEngine
+from flytekit.core.type_engine import TypeEngine, TypeTransformerFailedError
 from flytekit.core.workflow import PythonFunctionWorkflow
 from flytekit.models.interface import Variable
 from google.protobuf.json_format import MessageToJson
@@ -69,9 +69,12 @@ def preview(pkg_root: Path):
             continue
 
         typ, default = x
-        literal = TypeEngine.to_literal(
-            ctx, default, typ, TypeEngine.to_literal_type(typ)
-        )
+        try:
+            literal = TypeEngine.to_literal(
+                ctx, default, typ, TypeEngine.to_literal_type(typ)
+            )
+        except TypeTransformerFailedError:
+            continue
 
         cur = wf.interface.inputs[param_name]