# Execution state Keep under roughly 120 lines. Replace stale detail instead of appending. ## Status - Phase: `complete` - Blocker: none - User decision required: none outstanding ## Repository layout (restructured) src/ kernel/ fs/ net/ shell/ the linux-mimicking core node/ module shims, commonjs engine, esm transform python/ cpython, syscalls, pip, resolver, worker, abi, local-builder worker/ pods, sync channel, worker host tools/ esbuild, rolldown, ffmpeg hosts container/ pkg/ agent/ preview/ hosting/ docs/ every markdown file: agent/, python/, handoff.md python-runtime/ the Python build pipeline (Makefile, scripts, recipes) `src/runtime/` is gone. Moves were done with `git mv` and every relative import recomputed programmatically. Four references were strings rather than import specifiers -- two `dist/` paths whose depth changed, a `/src/runtime/python/` check in config.ts, and a test allowlist -- and those caused 79 failures until found. There was no dead code to remove: 2 of 130 source files are unreferenced and both are ambient `.d.ts` files tsconfig loads implicitly. ## Packages: nothing to pre-build any more `pip install ` now builds a wheel when the index has none. - `scripts/auto_recipe.py` writes a recipe from what PyPI and the source already state: identity, verified sdist, and the declared PEP 517 backend. Backends with no adapter are refused by name. Build requirements the lock has never seen are pinned at that moment rather than dropped. - `src/python/local-builder.ts` runs the pipeline; `bin/sandboxedjs-build-wheels.mjs` serves the index and builds on request, for browsers that have no compiler. - Opt-in, defaulting on only in Node from a checkout. Submit-and-poll, because a connection held open for a minutes-long build reads as an unreachable service. - Verified: `pip install ujson` with no recipe -> generated, built, indexed, installed, imported, both locally and through the service. ## Two real defects found and fixed - The browser's default wheel index was filtered to the wheels whose bytes are inlined in the bundle, so every other built wheel was invisible -- `pip install numpy` reported no usable distribution while numpy sat unreferenced beside the interpreter. The index now lists all built wheels, served from next to the interpreter, with the inlined bytes as an overlay keyed by filename. - The post-build index read went through pip's memoizing cache and returned the pre-build copy, so a package was built twice. ## Pre-existing failures, verified not caused by this work 11 tests, reproduced identically in a clean worktree at HEAD: `python-syscalls` (5), `cpython` (2), `python-abi/baseline` (3), `python-runtime/asyncio` (1). Also: pytest's default output capture fails in the container (`OSError: [Errno 8] Bad file descriptor`), so upstream suites need `--capture=no`. ## Unverified `import numpy` in a browser. The embedded browser used for testing blocks nested module workers loaded over HTTP, which the runtime needs to start Python at all -- `python3 --version` times out there too, and so does a trivial nested worker. `pip install numpy` was verified in that browser and returns 0. ## Last evidence `npx vitest run`: 610 passed, 24 skipped, 12 failed (the 11 above plus one PyPI-network flake that passes in isolation). `npm run typecheck`: pass. `npm run build`: pass. All 16 wheels byte-identical across rebuilds. ## Compact checkpoint template## Compact checkpoint template## Compact checkpoint template## Compact checkpoint template## Compact checkpoint template## Compact checkpoint template## Compact checkpoint template## Compact checkpoint template## Compact checkpoint template Replace the sections above after each meaningful loop: ```text Phase: Current task: Last completed task: Blocker: User decision required: Last evidence: - : Next action: Files changed this loop: ```