Deta Space engine version constraints and language syntax compatibility

Deta Space does not publish a fixed list of supported language versions, and the Spacefile does not provide a mechanism to pin a specific minor runtime version. The platform manages the runtime globally for each engine family (e.g., Python3, Node6), and the exact version can only be confirmed by running code in a deployed Micro.

Determine the Active Runtime Version

Deploy a minimal diagnostic Micro that prints the runtime version at execution time. This is the only reliable way to see the version Deta Space currently provides.

# Python example
import sys
print(f"Python {sys.version}")

// Node.js example
console.log(`Node.js ${process.version}`);

Run the Micro and capture the output. Compare it with your local development version to identify any syntax or library compatibility gaps.

Pinning a Minor Version in Spacefile

The Spacefile schema does not include a documented field for specifying a minor or patch version. Engine identifiers (such as python3.10 or node18) are not part of the configuration; only the engine family is recognized. Attempting to add a version key is likely to be ignored during deployment.

Assumptions and Verification

• This behavior is based on the platform's design as a managed runtime; Deta may update the underlying version without notice.
• External libraries that require a minimum runtime version may fail if the deployed engine is older.
• Always verify by deploying the version-check script above before relying on newer language features.

Recommended Workflow

1. Deploy the diagnostic Micro for each engine you use.
2. Record the reported version and develop/test locally against that exact version (or the closest available patch).
3. Monitor Deta's official changelog or community channels for runtime updates, and re-run the diagnostic after any announced changes.

If your application requires a specific language version that Deta Space does not currently provide, consider a self-hosted container platform or an alternative PaaS that allows runtime version pinning.