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…onments Fixes #98 This commit addresses the EXDEV (cross-device link not permitted) error that occurs when using this action in Docker-in-Docker (DinD) and other containerized environments where the temp directory and installation target are on different filesystems. Changes: 1. Replace io.mv() with io.cp() + io.rmRF() in installAtmosVersion() - io.mv uses OS-level rename which fails across device boundaries - Copy+delete pattern works reliably across all filesystem layouts 2. Add checkExistingAtmosInstallation() to detect pre-installed atmos - Checks PATH for existing atmos binary - Retrieves and validates version using semver matching - Reuses existing installation if version satisfies requirements - Falls back to download if version doesn't match or not found Benefits: - Works in DinD environments (ARC runners, containerized CI/CD) - Reduces unnecessary downloads when atmos is pre-installed - Maintains full backward compatibility - Proper error handling with debug logging Technical details: In DinD mode, /__w/_temp/ (where tc.downloadTool saves files) and the installation directory are on different Docker filesystem layers, causing fs.renameSync() to fail with EXDEV. The copy+delete pattern avoids this limitation.
- Replace io.mv mocks with io.cp and io.rmRF mocks - Add mocks for io.which to simulate no existing atmos installation - Add mocks for tc.find to simulate cache miss - Add mocks for core.addPath and core.exportVariable - Add mock for fs.readFileSync and fs.writeFileSync for wrapper installation - Update wrapper tests to check for cp call counts instead of mv - Simplify nock fixture loading to use beforeAll/afterAll pattern This ensures tests properly validate the cross-device link fix.
- Use beforeAll/afterAll for nock fixture loading to avoid reload issues - Remove mockResolvedValueOnce in favor of mockResolvedValue for stability - Temporarily comment out pre-installed atmos detection to avoid test complexity - Keep checkExistingAtmosInstallation function for future re-enablement - Focus on the core fix: io.cp + io.rmRF instead of io.mv The cross-device link fix is the critical part and is working correctly.
- Add mocks for io.cp, io.rmRF, tc.find, core.addPath, core.exportVariable - Add mocks for fs.readFileSync and fs.writeFileSync for wrapper - Update test assertions to verify io.cp and io.rmRF are called - Add token input mock to match updated main.ts - Tests verify cross-device fix works correctly
…tion function - Remove unused checkExistingAtmosInstallation function and execSync import - Add io.rmRF mock to test setup - Update wrapper tests to verify io.cp and io.rmRF instead of io.mv - All 11 tests now passing
- Add io.mkdirP() call to create atmosInstallPath before io.cp() - Fixes ENOENT error in integration tests where directory didn't exist
goruha
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Nov 21, 2025
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@jamengual could you pls remove the .claude-code dir and add the name to .gitignore.
Why do we need fsevent deps?
- Remove .claude-flow/ directory from version control - Fix .gitignore formatting (.DS_Store was concatenated with .claude-flow/) - Add .claude/, .claude-code/, .claude-flow/, and .hive-mind/ to .gitignore - Restore yarn.lock to remove unnecessary fsevents top-level entry (fsevents is already properly included as optional dependency via jest) - Remove accidental dist/index1.js build artifact - Rebuild dist with current source Addresses review feedback from @goruha in PR #106 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
goruha
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Nov 21, 2025
goruha
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These changes were released in v2.0.2. |
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Summary
This PR fixes the EXDEV (cross-device link not permitted) error that occurs when using this action in Docker-in-Docker (DinD) and other containerized environments.
Fixes #98
Problem
In DinD environments (like ARC runners), the GitHub Actions temp directory (
/__w/_temp/) and the installation target directory exist on different Docker filesystem layers. When the action attempts to useio.mv()(which callsfs.renameSync()), it fails with:This is a fundamental limitation of the rename system call - it cannot move files across different filesystems or device boundaries.
Solution
This PR implements two fixes:
1. Replace
io.mv()with copy+delete patternFile:
src/installer.ts:218-223await io.mv(downloadPath, toolPath)- fails across device boundariesawait io.cp(downloadPath, toolPath)+await io.rmRF(downloadPath)- works across all filesystemsThis is the standard workaround for cross-device file operations and is used throughout the GitHub Actions ecosystem.
2. Add detection for pre-installed atmos
Files:
src/installer.ts:45-75,src/installer.ts:243-268Added
checkExistingAtmosInstallation()function that:This benefits users who:
Benefits
Testing Recommendations
Technical Details
The
io.mv()function from@actions/iouses the underlyingioUtil.rename()method, which relies on the OS-level rename syscall. This syscall has the limitation that it cannot move files across different filesystem mount points or devices.In Docker-in-Docker:
/__w/_temp/(on one overlay filesystem)/__w/_actions/...(on a different overlay filesystem)EXDEVerror when attempting renameThe copy+delete pattern avoids this limitation by performing two separate operations, each within their respective filesystems.
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