I fix broken Python code and build small, focused developer tools.
10 pull requests merged into major open-source projects — reviewed and accepted by core maintainers.
ag2ai/faststream · Kafka / async framework · ★5.3k — 7 merged
| PR | What it did |
|---|---|
| #3046 | Fixed a garbage-collection race in the test client: fake subscribers were only weakly held, so a second TestBroker could adopt a leftover and then lose it mid-test. Regression test went into the shared base case, so every broker inherits it |
| #3041 | NATS subscribers declared with filter_subjects rendered an empty subject in the generated AsyncAPI schema — the channel now shows the subjects actually consumed |
| #2885 | Documented the subscriber concurrency model — max_workers vs. multiple subscribers — after tracing which brokers actually implement each |
| #2882 | Fixed a routing bug — group_instance_id was accepted by the FastAPI router but silently dropped before reaching the broker |
| #2883 | Added consumer-only mode, disabling producer/admin client creation. 7 test cases |
| #2871 | Exposed client_rack across broker, subscriber and FastAPI router with correct override precedence |
| #2884 | Verified an aiokafka version bump by running the full 171-test Kafka suite before proposing it |
astronomer/astronomer-cosmos · Airflow + dbt · ★1.2k — 3 merged
| PR | What it did |
|---|---|
| #2689 | Refactored a function failing the project's C901 complexity check, and fixed a user-reported crash on empty manifests. A competing PR fixed the same bug differently; maintainers chose this approach |
| #2726 | Made output-only template fields fail fast — they were being silently discarded, so misconfiguration produced no error and no effect |
| #2719 | Documented which fields are runtime-populated. Credited in the 1.15.0 release notes |
| Repo | What it is |
|---|---|
| envcheck | Validates .env files against a schema so missing variables fail in CI, not production. JSON + quiet modes. 25 tests |
| mdtoc | Generates and updates Markdown tables of contents. --check mode fails CI when the TOC is stale. 28 tests |
| dupfind | Finds duplicate files by content hash and reports reclaimable space. Glob exclusions, --top mode. 25 tests |
Every change ships with a test that proves it, and a short written explanation of what changed and why. Before claiming a fix works, I revert it and watch the test fail — a test that passes either way proves nothing. I'd rather fix the cause than patch the symptom; in open source, anything less doesn't get merged.
Stack — Python · TypeScript · pytest · Airflow · dbt · Kafka · NATS · Git