yt-dlp drops bun support over compatibility issues

yt-dlp, the widely used open-source media downloader, no longer supports Bun as of May 22, 2026, after disabling it by default and then fully deprecating it due to persistent compatibility and maintenance issues [GitHub Issue]. The project maintainers cited test failures, inconsistent behavior, and lack of community bandwidth to sustain Bun-specific fixes.

The decision followed months of troubleshooting, including failed attempts to stabilize Bun's runtime execution of yt-dlp's codebase. Developers reported edge-case regressions in subprocess handling and module resolution unique to Bun, forcing maintainers to prioritize stability over experimental runtime support [GitHub Issue].

This rollback matters because yt-dlp is a high-visibility tool with over 100,000 GitHub stars and deep integration into automation workflows. Its rejection of Bun signals that the runtime still struggles with real-world compatibility, despite performance claims.

Bun, marketed as a faster alternative to Node.js with built-in tooling, has faced skepticism in the open-source ecosystem. Projects like yt-dlp highlight the gap between theoretical speed gains and practical maintainability. Without broader runtime parity, adoption in critical tools remains limited.

The removal also reflects maintainers’ willingness to drop support when downstream costs outweigh benefits — a precedent that could influence other projects evaluating Bun.