Add AWS::CloudFormation::StackSet support to cloudformation package - #10655
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Teach the `aws cloudformation package` command to upload local templates referenced by the TemplateURL property of AWS::CloudFormation::StackSet resources, mirroring the existing AWS::CloudFormation::Stack behavior. Ports the change from the long-open v1 PR #5591 to v2. Fixes CLI-1773 / V273201798.
GarrettBeatty
marked this pull request as ready for review
September 16, 2026 19:31
GarrettBeatty
marked this pull request as draft
September 17, 2026 14:06
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Summary
Adds support for the
AWS::CloudFormation::StackSetresource to theaws cloudformation packagecommand. When a StackSet'sTemplateURLproperty references a local template file,packagenow uploads it to S3 and rewrites the property to the S3 URL — mirroring the existing behavior forAWS::CloudFormation::Stack.This ports the long-open v1 PR #5591 to the
v2branch (v1 is in maintenance mode). The sibling CodeCommit change (#5568) already shipped in v2; this fills the remaining gap. Tracked by CLI-1773 / V273201798.Changes
artifact_exporter.py: newCloudFormationStackSetResource(subclassesCloudFormationStackResource,TemplateURLproperty) + registered inRESOURCES_EXPORT_LIST._package_description.rst: documents the newly supported property.test_artifact_exporter.py: addstest_export_cloudformation_stackset..changes/next-release/.Fixed the original PR's casing (
StackSet, notStackset) to match the CFN resource type.Testing
test_artifact_exporter.py— 77 passed (incl. the new test).packageuploaded the child template and rewroteTemplateURLto anhttps://s3...URL;deployof the packaged template created aSELF_MANAGEDStackSet (ACTIVE), confirming CFN could consume the generated URL. Stack, StackSet, and bucket were deleted after.Notes
Pre-commit ruff flags pre-existing issues in these files (e.g.
super(__class__, self)at lines 309/469, unused vars in unrelated tests) that are not part of this change; left untouched to keep the diff minimal.