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Errors in post-install when called via composite action #253
Description
2026-05-08T14:40:00.6826488Z ##[group]Run pnpm/action-setup@8912a9102ac27614460f54aedde9e1e7f9aec20d
2026-05-08T14:40:00.6826992Z with:
2026-05-08T14:40:00.6827214Z cache: true
2026-05-08T14:40:00.6827527Z cache_dependency_path: frontend/pnpm-lock.yaml
2026-05-08T14:40:00.6827954Z package_json_file: frontend/package.json
2026-05-08T14:40:00.6828325Z run_install: cwd: frontend
2026-05-08T14:40:00.6828652Z dest: ~/setup-pnpm
2026-05-08T14:40:00.6828919Z standalone: false
2026-05-08T14:40:00.6830293Z ##[endgroup]
...
2026-05-08T14:42:24.9157219Z Post job cleanup.
2026-05-08T14:42:25.1099335Z ##[error]Error for input "run_install" = cwd:
2026-05-08T14:42:25.1103403Z ##[error]Errors: [object Object]
There seems to be two problems here. One is that printing the Zod error here doesn't work properly so we just get [object Object] in the logs. I guess that needs a JSON.stringify or something.
The other one is that it seems to have received two different inputs for the initial run of the action and the post-install step 🤯 This may be because we call pnpm/action-setup via a composite action:
- Composite: Nested actions post steps have the wrong context actions/runner#2030
- Wrong environment passed to node post when called by composite called by composite action actions/runner#3514
The recommended fix (see devcontainers/ci#442) is
persist inputs in main using
saveState, then read them back fromSTATE_*in the post step
Even GitHub's own actions have had to work around this bug in the runner: github/codeql-action#2557 😳
Activity
[-]Errors in post-install[/-][+]Errors in post-install when called via composite action[/+]