Add build failure analysis: 114 sampled from 1,146 root failures
Each failure has a markdown file with:
- Package name and version
- Error category
- Actual error lines from the build log
- Root cause explanation
- Suggested fix (opam constraints, depexts, patches)
Major categories:
- ~20 missing system deps (not in Debian Bookworm)
- ~18 missing OCaml deps (cascading failures)
- ~15 compiler incompatibilities (OCaml 5.x API changes)
- ~15 dependency API changes (cmdliner, lwt, tyxml, etc.)
- ~8 build script bugs
- ~3 broken source URLs
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>