VSCodium Extension Gallery Compatibility and Marketplace Constraints

Extension Registry Integration

VSCodium is distributed as a telemetry-free binary of the VS Code source, utilizing the Open VSX Registry by default to maintain compliance with licensing terms. This differs from the official Visual Studio Code distribution, which connects to the Microsoft Visual Studio Marketplace.

Compatibility Constraints

Certain extensions are designed to activate only when the product.json identifies the application as vscode. Because VSCodium modifies these identifiers to remove proprietary branding, some extensions may fail to initialize or lack full functionality despite being available in the registry.

There is an unresolved trade-off between maintaining a strictly telemetry-free environment and achieving full compatibility with extensions that rely on Microsoft-specific product identifiers.

• Does VSCodium provide a native mechanism to emulate the vscode product name for specific extensions without modifying the global product.json?
• What are the documented behavioral differences when an extension is installed via Open VSX versus a manual VSIX installation in VSCodium?