Files
cs249r_book/mlsysim/examples
Vijay Janapa Reddi 9c0c5b2c79 mlsysim: nest package layout, enable editable installs, clean lint
Restructure mlsysim into the standard nested layout (`mlsysim/mlsysim/...`)
so `pip install -e .` works out of the box. The previous flat layout used
a Hatch `sources = {"." = "mlsysim"}` prefix-add rewrite that the
`editables` backend cannot handle, breaking editable installs entirely.

Packaging
- pyproject.toml: drop `sources` rewrite, set `packages = ["mlsysim"]`,
  add explicit `[tool.hatch.build.targets.sdist]` include list.
- Wheel and sdist now contain only the package and project metadata
  (no `tests/`, `docs/`, `examples/`, `paper/`, `vscode-ext/` leakage).
- Update `pyright.exclude` for nested layout.
- Update GitHub source links in `docs/math.qmd` and
  `docs/models-and-solvers.qmd` to point to `mlsysim/mlsysim/...`.

Lint configuration
- Add `[tool.ruff]` to pyproject.toml with sensible per-file ignores:
  `__init__.py` re-export pattern (F401/F403/F405/F811),
  `core/constants.py` star import from unit registry,
  tests/examples idioms.
- `ruff check .` reports zero issues (down from 621).

Real bug fixes uncovered by lint cleanup
- `core/solver.py`: remove unused `from pydantic import BaseModel` that
  was being shadowed by the local `BaseModel = ForwardModel` alias.
- `sim/simulations.py`: remove redundant local `Fleet` import that was
  shadowing the module-level import and triggering F823 (referenced
  before assignment) on the earlier `isinstance(..., Fleet)` check.
- `cli/commands/audit.py`, `cli/commands/eval.py`: narrow three bare
  `except:` clauses to specific exception types.
- `tests/test_sota.py`: add the missing speculative-decoding ITL
  assertion (`res_opt.itl < res_base.itl`) — `res_base` was previously
  computed but never compared.
- `cli/commands/eval.py`: drop unused `is_json` local.
- `labs/components.py`: drop unused `energy` placeholder local.

Examples
- `examples/06_multi_objective_pareto.py`: rewrite around the actual
  `BatchingOptimizerResult` API (which has no `pareto_front` attribute);
  build the front explicitly by sweeping batch sizes through
  `ServingModel` + `TailLatencyModel`, then highlight the optimum
  returned by `BatchingOptimizer`.
- `examples/gemini_design_loop.py`: fix multi-line f-string syntax errors
  (`f"\n[…]"` instead of an embedded literal newline) so the file imports
  on every supported Python version.

Dev scripts
- `generate_appendix.py` and `paper/scripts/validate_anchors.py`: switch
  from package-relative imports to absolute `from mlsysim... import` so
  they run cleanly under the nested layout.

Docs / release notes
- `docs/getting-started.qmd`: replace the editable-install caveat with
  `pip install -e ".[dev]"` (now supported).
- `RELEASE_NOTES_0.1.0.md`: drop the three "known limitations" entries
  that this commit resolves (editable install, pareto example, gemini
  example).
- `CHANGELOG.md`: add a "Packaging & Tooling" section describing the
  layout change and the resolver bug fixes.

Verification
- `python -m pytest tests/` → 367 passed (was 367, no regressions).
- `ruff check .` → All checks passed.
- `pip install -e .` → succeeds; live source picked up.
- Fresh-venv wheel install + CLI smoke test → succeeds.
- `examples/06_multi_objective_pareto.py` and
  `examples/gemini_design_loop.py` → both exit 0.
2026-04-18 12:54:38 -04:00
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