Deploy Affected Components
Run CI jobs only for component instances affected by a change. Atmos produces the job matrix from your stacks and Git changes.
Complete Setup and Authentication first.
Workflow
Fan out across only the components that changed in the pull request using atmos describe affected --format=matrix. With ci.enabled: true, Atmos writes the matrix and count outputs to the runner's output file automatically.
atmos git clone --ci clones full history by default, which gives describe affected the pull request's base commit. Atmos reads that base from the event payload. The plan job checks count != '0' to skip empty matrices.
This pull request workflow only plans. Deploy after a protected merge, as shown in Apply on Merge. Both jobs check out the event revision so the matrix and plans use the same commit.
Add --labels=ci:auto to select only components labeled for this workflow. See
Choosing which components run in CI.
