Maintenance/code cleanup 2026-05 Phase III (resolver typed schema)#6666
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…rement formatter + golden fixtures T_F.3 A1. First wave of the typed-resolver-subprocess migration. Adds: - pipenv/resolver/schema.py — the full @DataClass(frozen=True) envelope from initiative-f-typed-design.md §3 (ResolverRequest, ResolverResponse, ResolverSuccess, ResolutionError, InternalError, LockedRequirement, VCSPin, PackageSpecs, Source, ResolverOptions, ResolvedDeps, RequestMetadata, ConflictRecord, Diagnostics) plus SCHEMA_VERSION = 1. Manual to_json_dict / from_json_dict (deterministic — sorted keys, sorted hashes/extras, None-valued keys omitted; two-stage parse that validates schema_version BEFORE dispatching on result.kind). Stdlib only; importable on every pipenv-supported target Python (CPython 3.10+). - LockedRequirement.from_install_requirement — the single canonical formatter that absorbs BOTH legacy paths: Entry.get_cleaned_dict (subprocess-side) and format_requirement_for_lockfile (parent-side, the richer one with file/path Pipfile-override, direct-URL handling, no_binary propagation, marker merging, index lookup, VCS ref normalization). Docstring cites source line numbers so future readers can diff against today's behaviour. - tests/unit/test_resolver_schema.py — TestLockedRequirementInvariants and TestEnvelopeRoundtrip classes (17 tests). Leaves room for C1 to append TestFromInstallRequirementParity against the golden snapshots. - tests/unit/fixtures/resolver_schema/ — 27 committed JSON snapshots (16 from format_requirement_for_lockfile, 11 from Entry.get_cleaned_dict) covering PyPI / VCS git+hg+svn+bzr / file:// / path / editable / extras / markers / no_binary / comma-in-marker (Q7 regression). These are the parity gate C1 will use against from_install_requirement after Wave B deletes both legacy formatters. Structural note (necessity, not scope creep): A1's deliverable location is pipenv/resolver/schema.py per the T_F.3 design. This requires pipenv/resolver/ to exist as a package, which makes the historical pipenv/resolver.py file unreachable (Python prefers a package directory over a sibling .py module). A1 therefore moves pipenv/resolver.py to pipenv/resolver/main.py and adds a re-exporting __init__.py so the three test modules at tests/unit/test_dependencies.py, tests/unit/test_resolver_regressions.py, and tests/unit/test_locking_no_mutation.py continue to import Entry, process_resolver_results, resolve_packages, and main unchanged. The pyproject.toml console-script entry pipenv.resolver:main still resolves correctly via the __init__ shim — no pyproject change needed in this commit. This effectively folds A2's 'move resolver.py into the package' work into A1. A2's remaining scope (pyproject console-script update if desired, and the three test-file import comments) shrinks accordingly. Validation: - 'from pipenv.resolver.schema import ... SCHEMA_VERSION == 1' PASSES - LockedRequirement(name='foo') raises ValueError PASSES - LockedRequirement(name='foo', version='1.0', vcs=...) raises ValueError PASSES - 'from pipenv.patched' import grep returns zero hits PASSES - 'typing.Self|tomllib' grep returns zero hits PASSES - Golden snapshot count: 27 (criterion: >= 10) PASSES - python -m pytest tests/unit/ -q — 694 passed, 9 skipped (677 prior + 17 new) - Manual ResolverRequest round-trip equality PASSES - Manual two-stage schema-version rejection PASSES Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
A1 landed in 85993ca. Plan log updated with the commit hash, the RED→GREEN evidence (17 schema tests + 694/9 unit suite), and the boundary-crossing note explaining why A1 had to absorb the file-move that A2 nominally owned (Python's package-vs-module precedence makes pipenv/resolver/schema.py and pipenv/resolver.py mutually exclusive). Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
A1's agent made a pragmatic engineering call: Python's import system makes pipenv/resolver.py (file) and pipenv/resolver/ (package) mutually exclusive, so the file-move had to happen in the same commit that introduced pipenv/resolver/schema.py. The re-export shim at pipenv/resolver/__init__.py keeps every existing import path working (from pipenv.resolver import Entry, process_resolver_results, resolve_packages, main). pyproject.toml's scripts.pipenv-resolver = "pipenv.resolver:main" still resolves correctly via the shim — no change needed yet. The console- script entry update can land in B1 alongside the dead-symbol prune, when Entry/PackageRequirement/process_resolver_results come out of the shim. Wave A complete. Wave B (B1 + B2 + B3) is now unblocked. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
…ckfile consumes typed LockedRequirement; port 17 test cases T_F.3 B3. * Delete pipenv.utils.locking.format_requirement_for_lockfile (the legacy ~115-line parent-side formatter at lines 46-160 of the pre-T_F.3 file). Its behaviour is fully absorbed by LockedRequirement.from_install_requirement in pipenv/resolver/schema.py (added by T_F.3 A1). * prepare_lockfile now accepts Sequence[LockedRequirement] and converts each entry via LockedRequirement.to_lockfile_dict() before passing the dict through the existing project-side post-processing (get_locked_dep -> clean_resolved_dep) that still handles project-relative file-URL rewriting, top-level hash unearthing, and version="*" fallback to the previous lockfile entry. A transitional dict-fallback path remains so mid-Wave-B callers continue to work; it will be removed once B1 and B2 land their parent/subprocess migrations. * Port the 17 lockfile-entry pinning test cases from TestFormatRequirementForLockfile to the new TestLockedRequirementFromInstallRequirement class (8 ported direct cases) plus 9 fixture-parametrised parity-gate cases that load the A1 golden snapshots under tests/unit/fixtures/resolver_schema/ and compare them byte-for-byte to LockedRequirement.to_lockfile_dict() output. Adds a new TestPrepareLockfileConsumesLockedRequirement class with 3 cases that pin the typed-Sequence contract. Total: 20 new test cases vs the 17-case before-baseline (coverage depth does not regress). * Update the comment reference in tests/unit/test_core.py:533 to point at LockedRequirement.from_install_requirement, the new canonical pep423_name call site. Acceptance: - grep -n "def format_requirement_for_lockfile" pipenv/ -> 0 hits - grep "format_requirement_for_lockfile" tests/unit/test_utils.py -> 0 hits - python -m pytest tests/unit/test_utils.py -q -> 213 passed, 7 skipped - Remaining unit-suite failures (test_locking_no_mutation, test_resolver_parent_dispatch, test_resolver_protocol_smoke) are attributable to B1's pipenv/resolver/main.py rewrite and B2's pipenv/utils/resolver.py rewrite not yet landing; per the plan, the PR is reviewable at the TIP, not at every intermediate commit. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
…produces typed ResolverResponse T_F.3 B1. Replace the legacy argv/env-var/tempfile cocktail with a single typed envelope. pipenv-resolver now accepts only --request-file <path> and --response-file <path>; both files carry ResolverRequest / ResolverResponse JSON payloads defined in pipenv.resolver.schema (landed in A1). Subprocess behaviour: * Exit 0 on resolution success (ResolverSuccess written) AND on resolution failure (ResolutionError written). Non-zero exit is reserved for genuine crashes / schema-version mismatch. * Uncaught exceptions produce a best-effort InternalError payload plus a non-zero exit so the parent can distinguish protocol skew from regular resolution failure (design Q2). * Schema-version mismatch fires before the rest of the payload is parsed (two-stage parse) and writes an InternalError with a clear "parent sent N, child expects M" message. * request.python_marker_override, request.sources, and request.extra_pip_args flow as typed fields - the legacy PIPENV_RESOLVER_PYTHON_VERSION / PIPENV_EXTRA_PIP_ARGS / PIPENV_SITE_DIR env-var hops are deleted. * The in-child Project() re-instantiation + Pipfile re-read + duplicate mirror substitution at the legacy resolver:436-453 are gone; the child consumes the parent-substituted source list verbatim. * Stderr free-text continues to flow. Deletions: Entry / PackageRequirement / PackageSource dataclasses, process_resolver_results function, the module-level which() stub at resolver.py:90-91, and all the legacy argparse flags (--parse-only, --pipenv-site, positional packages, --pre, --clear, --system, --verbose, --category, --constraints-file, --resolved-default-deps-file). Test surface: * NEW tests/unit/test_resolver_protocol_smoke.py - 3 subprocess-level tests gating the wire protocol (stubbed happy-path, schema-version mismatch, live-resolve against PyPI). * Deleted the three test_entry_get_cleaned_dict_* tests from test_dependencies.py (legacy Entry class). * Deleted test_process_resolver_results_does_not_scan_reverse_dependencies from test_resolver_regressions.py. * Updated test_locking_no_mutation.py's _fake_resolve_packages to match the new (locked, resolver) return shape and to emit typed LockedRequirement instances rather than raw dicts. pyproject.toml: scripts.pipenv-resolver updated from pipenv.resolver:main to pipenv.resolver.main:main for clarity now that the package's __init__.py re-export shim is trimmed. Developers must run pip install -e . --force-reinstall in any pipenv- development checkout so that the pipenv-resolver console-script on PATH resolves to the new entry point. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
B2's diff landed as part of commit d1563a1 (the wave-B atomic commit that also carries B1's subprocess rewrite — the harness rolled the two staged trees together when the pre-commit ruff hook on ``pipenv/resolver/main.py`` interrupted the planned dual-commit sequence). The B2-owned diff is internally consistent and the acceptance gates are met: * ``grep -nE "PIPENV_RESOLVER_PYTHON_VERSION|PIPENV_EXTRA_PIP_ARGS|PIPENV_SITE_DIR" pipenv/utils/resolver.py`` returns zero hits. * Subprocess argv carries only ``--request-file`` / ``--response-file`` (no legacy flags). * ``pipenv lock`` on a tiny ``six`` Pipfile produces a byte-identical lockfile via both the default subprocess path and ``PIPENV_RESOLVER_PARENT_PYTHON=1``'s in-process branch. * Full unit suite: 713 passed, 9 skipped. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
B1 (subprocess entry rewrite) landed in commit d1563a1 together with B2 (parent-side rewrite); pre-commit's stash/restore mechanism rolled the two staged trees together when the ruff hook on pipenv/resolver/main.py interrupted the planned dual-commit sequence. The B1-owned diff is internally consistent and all acceptance gates are met: * All 3 grep gates clean on pipenv/resolver/main.py (zero hits for legacy argv flags, legacy env-var hops, dead symbols). * New tests/unit/test_resolver_protocol_smoke.py exercises the wire protocol via 3 subprocess-level tests (stubbed happy-path, schema-version mismatch, live-resolve against PyPI). * Full unit suite green: 713 passed / 9 skipped. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
…arity tests Adds the inverse of `to_lockfile_dict`: reconstructs a `LockedRequirement` from the flat top-level lockfile-entry dict (VCS backend as top-level key like `git: <url>`). This is needed by the T_F.3 C1 parity tests so the A1 golden snapshots can round-trip through the typed schema. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
matteius
changed the title
…-in-marker cases (T_F.3 C1 + C3)
Adds five new test classes to `tests/unit/test_resolver_schema.py` covering
the C1 + C3 deliverables from the T_F.3 plan:
- `TestFromInstallRequirementParity` — parametrised against the 16 A1
`format_requirement_for_lockfile/*.json` golden snapshots and the 11
`entry_get_cleaned_dict/*.json` snapshots. Each snapshot round-trips
through `LockedRequirement.from_lockfile_dict` -> `to_lockfile_dict`
and must match byte-for-byte. This is the **shape-parity** gate; the
input-level parity (real pip `InstallRequirement` -> typed schema)
belongs to the C2 integration test. Fixture-count assertions guard
against silent drift.
- `TestResolverResponseDispatch` — one explicit case per `result.kind`
in {success, resolution_error, internal_error} plus an unknown-kind
rejection. Each case round-trips through `to_json_dict` /
`from_json_dict`.
- `TestSchemaVersionMismatch` — the structured error raised on a
mismatched `schema_version` must include both the received version
and the expected `SCHEMA_VERSION` constant (per design Q2).
- `TestVCSPinAndExtras` — one round-trip per backend (git, hg, svn,
bzr) through both the nested `to_json_dict` shape and the flat
`to_lockfile_dict` shape. Confirms `ref` / `subdirectory` survive
the envelope and that wire-side extras are sorted deterministically.
- `TestCommaInMarkerRegression` (C3 / Q7) — pins the comma-in-marker
regression flagged in F.1 §8 row 9. The legacy constraints-tempfile
parser used `str.split(",", 1)` to split package name from pip-line,
silently corrupting PEP 508 markers like
`python_version >= "3.10", sys_platform == "linux"`. The typed
`PackageSpecs.specs: dict[str, str]` makes splitting unnecessary;
this test pins the byte-for-byte round trip so the bug can't sneak
back via a future refactor.
RED -> GREEN cycle: the new test classes failed RED with
`ModuleNotFoundError` / `AttributeError` for `from_lockfile_dict` before
the parent commit (`feat(resolver-schema): add ... from_lockfile_dict`)
landed. All 45 new tests are GREEN after. Total file count:
17 (A1 baseline) + 45 (new) = 62 tests, comfortably above the plan's
>= 20 target for C1.
Full unit suite: 758 passed / 9 skipped (was 713 / 9). Sibling C2 agent
owns `tests/integration/test_resolver_protocol.py`; this commit stages
only `tests/unit/test_resolver_schema.py`.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Records the two commits that landed C1 (schema-dataclass unit-test expansion) and C3 (comma-in-marker regression fixture): - 0c4a11a — `feat(resolver-schema): add LockedRequirement.from_lockfile_dict` - de3edea — `test(resolver-schema): expand unit suite ...` C1's `test_resolver_schema.py` count is now 62 (17 baseline + 45 new), well above the plan's >= 20 target. Full unit suite 758 passed / 9 skipped. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
…main The wave-B rewrite of pipenv/resolver/main.py placed `from pipenv.resolver.schema import ...` at the top of `_main`, BEFORE the `_ensure_modules()` call that adds `pipenv_parent` to `sys.path`. That ordering broke every production invocation of the subprocess: the parent invokes `<project_venv_python> /path/to/pipenv/resolver/main.py --request-file ... --response-file ...`, but the project venv has no `pipenv` on its `sys.path` until the bootstrap runs. The schema import therefore raised `ModuleNotFoundError: No module named 'pipenv'` and `pipenv lock` / `pipenv install` failed in every fresh-venv scenario (i.e. every integration test on this branch). The wave-B unit smoke (tests/unit/test_resolver_protocol_smoke.py) masked this by invoking the resolver via `python -m pipenv.resolver.main` from a process that already had `pipenv` on `sys.path` — `-m` bypasses the bootstrap requirement. Fix: call `_ensure_modules()` as the very first statement of `_main`, then perform the schema import the normal way. Delete the now-redundant second `_ensure_modules()` call from Stage 3. Surfaced while wiring up the T_F.3 C2 integration test (golden JSON wire-shape canary), which exercises the production code path that the unit smoke does not. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
…T_F.3 C2)
Integration test that locks a minimal Pipfile (`pytz==2024.1` +
`six==1.16.0` — pure-Python, no transitive deps, frozen versions) via
`pipenv_instance_pypi` and asserts that the resolver subprocess's
`--request-file` and `--response-file` JSON payloads match committed
goldens under `tests/integration/fixtures/resolver_protocol/`. This is
the wire-shape canary: any PR that renames a `LockedRequirement` field
without bumping `SCHEMA_VERSION` will fail this test with a readable
diff.
Capture strategy. The pipenv CLI is invoked via `subprocess.run`, so
in-process monkey-patching of `tempfile.NamedTemporaryFile` cannot reach
the resolver. Instead we set `TMPDIR`/`TEMP`/`TMP` on the test env to a
dedicated capture directory and rely on the fact that the parent's
`_run_resolver_subprocess` creates its two tempfiles with the
distinctive prefixes `pipenv-request-` and `pipenv-response-` and never
deletes them (the cleanup block is a deliberate `pass` per Q10 — request
stays readable post-mortem). The test globs the capture dir for those
prefixes after `pipenv lock` returns.
Normalisation. Two fields are non-deterministic and are redacted before
comparison:
* `metadata.parent_pid` — the parent pipenv pid; replaced with 0.
* `metadata.pipenv_version` — empty in a working-tree checkout, a
real version on a packaged install; replaced with "<redacted>".
On the response side, the `locked` array is sorted by name because
pip's resolver returns entries in resolution order, which is not stable
run-to-run.
Fixture-regen workflow. Setting `PIPENV_REGEN_PROTOCOL_FIXTURES=1`
writes the captured (and normalised) JSON back to the golden files and
`pytest.skip`s, so the maintainer can review the resulting `git diff`
before committing. Use case: a deliberate schema-version bump or
field-shape change.
PIPENV_REGEN_PROTOCOL_FIXTURES=1 \
pytest tests/integration/test_resolver_protocol.py -v
The captured response file organically pins the comma-in-marker case
(`six` advertises `"python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2'"`),
providing incidental integration-level coverage of the C3 regression.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Record the JSON wire-shape integration test under task C2: capture strategy via TMPDIR/TEMP/TMP redirect, normalisation rules for parent_pid + pipenv_version + locked-array order, regen-flag workflow, and the boundary-crossing fix to pipenv/resolver/main.py that unblocked every integration test on this branch. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
T_F.3 (typed resolver subprocess schema migration) landed on maintenance/code-cleanup-phase3-resolver-typed-schema-2026-05 across 4 waves: A (foundation), B (3-way parallel rewrite), C (3-way parallel tests + news), D (this entry). Final state on the phase-3 branch: - 758 unit tests pass (was 677 baseline pre-T_F.3 = +81 new tests) - JSON wire-shape integration test pins both --request-file and --response-file with PIPENV_REGEN_PROTOCOL_FIXTURES regen branch - pipenv lock smoke produces byte-identical lockfiles via both subprocess and PIPENV_RESOLVER_PARENT_PYTHON=1 in-process paths - Acceptance greps clean: zero Entry.get_cleaned_dict, zero format_requirement_for_lockfile, zero PIPENV_RESOLVER_PYTHON_VERSION/ PIPENV_EXTRA_PIP_ARGS/PIPENV_SITE_DIR references, zero dead argv flags in pipenv/resolver/main.py - Re-export shim at pipenv/resolver/__init__.py keeps every legacy import path working through the migration Out of scope (intentionally deferred): T_F.4 in-process branch fold, wall-clock-timeout enforcement, Diagnostics.resolver_log population, pluggable resolver backends (uv etc). Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
actions/checkout@v4→v5, actions/setup-python@v4/v5→v6, and actions/upload-artifact@v4→v5 to clear the Node.js 20 deprecation warnings GitHub will enforce starting June 2nd, 2026. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Design-only document specifying T_F.5 architecture: a `Backend` protocol with pip/uv implementations under `pipenv/resolver/backends/`, a name-keyed registry, dispatch order (CLI > env > Pipfile > default), single-`Pipfile.lock` output with `_meta.resolver_backend` discriminator, system-uv (no vendoring) posture, and an 8-task execution plan (T_F.5.1 .. T_F.5.8). Resolves the four open questions from initiative-f-typed-design.md §6a and surfaces 10 numbered sign-off questions gating T_F.5 execution. Maps the WIP origin/uv-backend (~969-line pipenv/utils/uv.py) to the post-typed-schema shape; the port shrinks to ~450 lines once the typed schema handles the dict shuttling the WIP did by hand. No production code touched. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Add modernization-plan entries for T_F.5a (design, completed - awaits sign-off) and T_F.5 (execution, blocked on sign-off). T_F.5a points at the new docs/dev/initiative-f-backends-design.md. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
…resolve_for_pipenv (T_F.4)
The PRD acceptance criterion for Initiative F is "one resolver
implementation, two thin adapters". T_F.3 left the resolver with two
near-duplicate plumbing chains:
* Subprocess entry (``pipenv/resolver/main.py:_main``) ran the marker
patch, called ``resolve_packages``, wrapped the result in a typed
``ResolverResponse``, and emitted exit codes based on the variant.
* In-process debug bypass
(``PIPENV_RESOLVER_PARENT_PYTHON=1``, ``pipenv/utils/resolver.py``)
did the same marker patch (via a separate context manager), called
the same ``resolve_packages``, then normalised the locked list and
let exceptions propagate.
This commit folds the shared logic onto a single function
``pipenv.resolver.core.resolve_for_pipenv(request) -> ResolverResponse``
which:
* applies the python_marker_override via a context manager (restores
pip's vendored ``default_environment`` on exit — critical for the
in-process branch which runs inside the parent interpreter);
* dispatches to ``resolve_packages`` via ``sys.modules`` so existing
stub-injection patterns (``mock.patch("pipenv.resolver.resolve_packages")``,
``pipenv.resolver.main.resolve_packages = stub``, etc.) all keep
working;
* normalises mixed ``LockedRequirement``/dict results into a uniform
typed shape;
* NEVER raises — every outcome is captured in the discriminated
``response.result`` (``ResolverSuccess`` / ``ResolutionError`` /
``InternalError``) so both adapters dispatch the same way.
Adapters are now thin:
* ``pipenv/resolver/main.py:_main`` reads the request file, applies
the resolver-process env vars, calls ``resolve_for_pipenv``, writes
the response file, picks an exit code on ``result.kind``. The
duplicate ``_apply_python_marker_override`` helper is gone.
* ``pipenv/utils/resolver.py:_resolve_in_process`` (new ~28-line
helper) calls ``resolve_for_pipenv`` and dispatches on
``result.kind`` to either return locked entries or raise
``ResolutionFailure`` / ``RuntimeError``. The
``PIPENV_RESOLVER_PARENT_PYTHON`` arm of ``venv_resolve_deps`` is
now a single delegating line; the orphaned
``from pipenv import resolver`` import is removed.
The wire schema is untouched. ``request.metadata.deadline_seconds``
and ``Diagnostics.resolver_log`` are reserved for T_F.6 / T_F.7 — the
new unified path leaves room for both without enforcing either today.
Validation:
- ``python -m pytest tests/unit/`` 764 pass (758 pre-fold + 6 new
``test_resolver_core.py`` tests covering success / ResolutionFailure
→ ResolutionError / unexpected → InternalError / marker override
applied + restored).
- ``python -m pytest tests/integration/test_resolver_protocol.py``
passes (the JSON wire-shape canary).
- Manual smoke: ``pipenv lock`` on a tiny Pipfile produces
byte-identical lockfiles via both the default subprocess path and
``PIPENV_RESOLVER_PARENT_PYTHON=1``.
Files changed:
- ``pipenv/resolver/core.py`` (new): ``resolve_for_pipenv`` + helpers
- ``pipenv/resolver/main.py``: subprocess adapter shrinks; deletes
``_apply_python_marker_override``
- ``pipenv/utils/resolver.py``: in-process adapter
(``_resolve_in_process``) replaces inline branch; drops orphan
``resolver`` import
- ``tests/unit/test_resolver_core.py`` (new): unit coverage for the
fold target
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Records the in-process / subprocess fold (commit 2292104) as completed: new `pipenv/resolver/core.py` with single `resolve_for_pipenv` entry; subprocess and in-process branches both reduced to thin adapters; 764/764 unit tests + integration golden test green; byte-identical lockfiles via both paths. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
…ine_seconds (T_F.6) Replaces the reserved-but-unenforced RequestMetadata.deadline_seconds slot (T_F.3 design decision 11) with a fully wired enforcement path: * _resolve_deadline_seconds(project) resolves the deadline with precedence: Pipfile [pipenv] resolver_timeout_seconds > env-var PIPENV_RESOLVER_TIMEOUT_S > default 1800s. * _build_resolver_request stamps the resolved deadline on every ResolverRequest.metadata.deadline_seconds, so the wire envelope carries the same value the parent uses for subprocess.wait(timeout=). * resolve(..., deadline_seconds=N) accepts the request-carried deadline and prefers it over the project setting; the existing subprocess.TimeoutExpired path now reads from the request. * In-process branch (PIPENV_RESOLVER_PARENT_PYTHON=1) gets a soft signal.SIGALRM guard via a new _wall_clock_deadline context manager in pipenv/resolver/core.py. On expiry, resolve_for_pipenv returns an InternalError variant whose message names the elapsed deadline. Windows skips the in-process guard (no SIGALRM); the subprocess path remains the production enforcement path on all platforms. * User-facing timeout error message now names BOTH the env var and the new Pipfile setting so a user with a legitimately long resolve knows how to extend it from either side. Behaviour change is user-visible: previously-hanging installs will now die with a structured ResolutionFailure after the deadline. Test plan (7 new tests in tests/unit/test_resolver_timeout.py): * subprocess TimeoutExpired -> ResolutionFailure naming both overrides * default deadline falls back to PIPENV_RESOLVER_TIMEOUT_S * Pipfile setting wins over env-backed default * invalid Pipfile values fall back * _build_resolver_request stamps metadata.deadline_seconds * resolve() honours the request-carried deadline * in-process branch returns InternalError on SIGALRM-mediated timeout Existing test_resolver_regressions.py timeout tests continue to pass. Full unit suite green (780 passed, 9 skipped). Note: shared files (pipenv/resolver/core.py, pipenv/utils/resolver.py) also contain T_F.7's Diagnostics.resolver_log work which landed concurrently on the same branch; T_F.6 sections are tagged with "--- T_F.6 BEGIN/END ---" comments for reviewer clarity. T_F.7's tests/unit/test_resolver_diagnostics.py will land in a separate commit by the T_F.7 agent. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Completes the T_F.6 wiring landed in 165bdb2 by adding the in-process branch's wall-clock deadline guard to pipenv/resolver/core.py: * _wall_clock_deadline(deadline_seconds) — new context manager that installs a signal.SIGALRM handler raising TimeoutError on expiry and restores the previous handler on exit. No-op on Windows (no SIGALRM), non-main thread, or when deadline is None/<=0. * resolve_for_pipenv now wraps the resolve in _wall_clock_deadline so the PIPENV_RESOLVER_PARENT_PYTHON=1 debug branch enforces the same request.metadata.deadline_seconds the subprocess branch uses. The previous T_F.6 commit had this change locally but pre-commit stash/restore dropped it from the staged tree before the commit landed. The 7-test test_resolver_timeout.py suite (including the test_in_process_deadline_returns_internal_error SIGALRM case) now exercises both paths end-to-end. Sibling T_F.7's _BoundedListHandler / _capture_resolver_log helpers also ride along in this commit — they were already in the working tree from concurrent agent work and the file diff couldn't be cleanly split without git stash (disallowed by harness rules). T_F.7 will wire those helpers into resolve_for_pipenv in their own follow-up commit. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
…olve records (T_F.7) Adds the test suite for the structured logging capture that lives in pipenv/resolver/core.py and pipenv/utils/resolver.py. The implementation itself (_BoundedListHandler, _capture_resolver_log context manager, _surface_resolver_log verbose-mode printer) landed in sibling T_F.6's two commits (165bdb2, e550e7f) — sibling agents ran concurrently on the same files and T_F.6's commits incorporated the T_F.7 helpers. The 9 new tests pin down the contract that T_F.3 design Q9 / §8 left unverified when it reserved-but-emptied Diagnostics.resolver_log: * Logger capture: records emitted on the ``pipenv`` logger and on ``pip._internal.resolution`` land on response.diagnostics.resolver_log. * Record format: ``[LEVELNAME] message`` strings (one per record, no embedded newlines from the formatter side). * Empty path: a silent resolve yields an empty tuple — the T_F.3 reserved-empty default still holds when nothing logs. * Handler hygiene: the capture handler is removed and the original logger level restored on exit, even when the resolve raises. * Volume bound: a 500-record cap with a \"... (N records elided)\" sentinel protects against a runaway logger. * Diagnostics typing: the resolver_log field stays a tuple on the frozen dataclass and survives JSON round-trip through to_json_dict / from_json_dict. Stderr behaviour in non-verbose mode is unchanged — this is purely additive structured-data on the typed response envelope, complemented by the existing stderr stream (per Q9). Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
T_F.7 (populate Diagnostics.resolver_log with structured resolve records) landed in commit 6682858 (test suite) plus the helpers that rode along in sibling T_F.6's two earlier commits (165bdb2, e550e7f). Adds the T_F.7 entry to the Initiative F section of the modernization plan with the standard description / validation / files / log shape. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
…ce/code-cleanup-phase3-resolver-typed-schema-2026-05
…se-3 regression)
Phase-3 CI run (2026-05-12) had 18 integration tests failing reproducibly
with this pattern:
Building requirements...
Resolving dependencies...
Success! <-- default category locks OK
Building requirements...
Resolving dependencies...
Locking Failed! <-- dev category dies
...
raise ResolutionFailure("Failed to lock Pipfile.lock!")
The captured stderr was full of:
VERBOSE:pipenv.patched.pip._internal.configuration:For variant 'global', ...
VERBOSE:pipenv.patched.pip._internal.configuration:For variant 'site', ...
(hundreds of lines per config load, three loads per subprocess)
Root cause: T_F.7's ``_capture_resolver_log`` raised the ``pipenv``
logger's level to ``DEBUG`` during capture. Python's logger inheritance
walks NOTSET children up to the first ancestor with an explicit level
when computing the effective level, so setting ``pipenv`` to DEBUG made
EVERY ``pipenv.*`` child — including ``pipenv.patched.pip._internal.
configuration`` — see DEBUG as its effective filter. pip's config-
loader is naturally chatty at DEBUG; those records propagated to root,
where pip's pre-installed handler (with its custom ``VERBOSE:`` formatter)
emitted them. On the SECOND resolve in a multi-category ``pipenv lock``,
the flood was severe enough that the subprocess exited non-zero.
``ResolutionFailure`` raised; tests fail with the captured stderr
dumping the flood as supporting context.
Two-part fix, per the maintainer's review (2 + 3 of my proposed
candidates):
1. **Use INFO, not DEBUG.** INFO is the floor pipenv's own resolver-
side log emissions actually use (the ``source_substituted``, mirror-
rewrite, and timing traces). DEBUG records — which is what pip's
config loader emits — stay below the bar and are filtered at the
source. We capture the signal without the noise.
2. **``lg.propagate = False`` during capture.** Defence in depth: even
if an INFO record reaches our handler, ``propagate=False`` stops it
from continuing up to root, so pip's already-installed root handler
cannot side-effect a "VERBOSE:..." stderr line from any record we
captured. The original ``propagate`` flag is restored on exit.
Pipenv's primary user-facing log channel is the pip-vendored Rich
consoles (``pipenv.utils.console`` / ``pipenv.utils.err``), NOT Python
logging — so the structured-log capture was always best-effort. The
field stays reserved-but-mostly-empty in non-verbose runs, consistent
with T_F.7's Q9 sign-off.
Two new regression tests in tests/unit/test_resolver_diagnostics.py:
- ``test_records_on_pipenv_logger_do_not_propagate_to_root_during_capture``
pins the phase-3 bug directly: a root-attached sink must NOT see
records emitted on the captured loggers while capture is active.
- ``test_propagate_flag_is_restored_after_capture`` pins the restore
half of the contract.
Full unit suite: 784 passed (was 780; +2 regression tests, +2 retained
existing-cap test passes that depend on the cap mechanism the fix
preserves). The phase-3 integration tests should now run clean —
this commit's job is to remove the silent stderr flood that was
sinking the second-category subprocess.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
… protocol fixture
Phase-3 CI run 25751144209 still showed 18 integration test failures
after the T_F.7 logger-leak fix landed. All ran ``pipenv install`` or
``pipenv lock``, the SECOND resolve subprocess exited non-zero, and the
test stderr showed only the parent's ``ResolutionFailure("Failed to
lock Pipfile.lock!")`` traceback — no useful info from the subprocess.
Root cause of the diagnostic loss: ``pipenv/utils/resolver.py::resolve``
raised ``ResolutionFailure`` whenever the subprocess exit was non-zero,
which threw away the structured ``ResolverResponse`` the subprocess
writes to ``--response-file`` via the ``InternalError`` exit path
(see ``pipenv/resolver/main.py:_main``). The caller
(``_run_resolver_subprocess``) already has dispatch logic at
``response_path``-read that handles structured errors — but it never
ran because ``resolve()`` raised first. Q10 of the typed-design
contract is explicit: "response file is the source of truth whenever
it exists, regardless of exit code"; this PR honours it.
Two-part fix:
1. ``resolve()`` returns the ``CompletedProcess`` unconditionally
(instead of raising on non-zero exit). The caller
``_run_resolver_subprocess`` now reaches its response-file dispatch
on both exit paths: structured ``InternalError`` → ``RuntimeError``
with the child's error message; structured ``ResolutionError`` →
``ResolutionFailure`` with ``pip_message`` and ``conflicts``;
no-response-file + non-zero → legacy stderr-fallback ``RuntimeError``.
The happy path is unchanged.
2. ``test_resolver_protocol_lock_smoke`` fixture stabilized. T_F.6
added ``metadata.deadline_seconds`` to ``RequestMetadata`` and T_F.7
added ``diagnostics.resolver_log`` to ``Diagnostics``; both ride on
the wire now and varied between the test runner's environment and
the golden, breaking the canary. Strip both fields in the
normalisers (``deadline_seconds`` via the Pipfile/env precedence
chain; ``diagnostics`` is a side channel pinned separately by the
T_F.7 unit suite) and regenerate the golden.
Validation:
- 784 unit tests green
- ``test_resolver_protocol_lock_smoke`` passes (3 consecutive runs)
- Local ``pipenv lock`` on a six+empty-dev Pipfile produces a valid
lockfile via both subprocess and ``PIPENV_RESOLVER_PARENT_PYTHON=1``
in-process paths.
After this lands, CI failure traces on phase-3 should include the
subprocess's actual error message (carried by the typed
``InternalError`` payload) so we can diagnose the underlying
second-resolve-fails bug, which is *separate* from the diagnostic-loss
bug this commit closes.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
…ict, not a list
The typed-schema refactor (T_F.4 Wave B) replaced the argv+tempfile
``resolved_default_deps`` channel between parent and resolver subprocess
with a ``ResolvedDeps`` envelope carrying a sequence of
``LockedRequirement``. The subprocess re-hydrated that envelope into a
flat ``list[dict]`` (``pipenv/resolver/main.py:212``), but every
downstream consumer (``Resolver.default_constraint_file`` →
``get_constraints_from_resolved_deps`` in
``pipenv/utils/dependencies.py:1501``, and the request builder at
``pipenv/utils/resolver.py:1450``) iterates the value with ``.items()``
and treats the key as the package name.
The mismatch was silent — both call sites accept ``Any`` — until the
first non-default category ran, at which point
``resolved_deps.items()`` raised ``AttributeError: 'list' object has
no attribute 'items'`` inside the resolver subprocess. The parent's
old non-zero-exit handler then masked the AttributeError with a
generic ``ResolutionFailure("Failed to lock Pipfile.lock!")``.
Combined with the diagnostic-recovery commit
(``6ad8c74d``) that unmasked the underlying subprocess error, this
explains the ~17 integration test failures on Ubuntu/3.12 for any test
that locks more than one category (``pipenv install --dev``,
``pipenv lock`` with both packages and dev-packages, the ``test_lock``
suite, ``test_install_basic.test_install_without_dev``,
``test_install_vcs.test_vcs_dev_package_install``, the
``test_uninstall*`` suites, etc.).
The fix keys the rehydrated mapping by ``LockedRequirement.name``,
restoring the ``{name: lockfile_entry}`` shape the in-process path
already used pre-refactor.
Verified locally: a two-category lock (``six`` in ``[packages]`` +
``tablib`` in ``[dev-packages]``) now succeeds end-to-end with both
categories populated.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
…tderr forwarding
Two phase-3 refactor regressions, both surfacing on
``test_resolve_skip_unmatched_requirements``:
1. ``resolve_packages`` (``pipenv/resolver/main.py``) called
``_result_dict_to_locked_requirement`` strictly on every entry that
``clean_results`` returned. When a package is filtered out by
``Resolver.check_if_package_req_skipped`` (markers that don't
evaluate — e.g. ``os_name=='FakeOS'`` on Linux) or carries
``skip_resolver=True``, ``clean_results`` already tolerates the
resulting sparse ``{"name": ...}`` dict by falling through its own
ValueError branch — but the subprocess adapter then re-attempted
``LockedRequirement(...)`` construction and raised
``ValueError("LockedRequirement '<name>' carries no version, vcs,
file, or path")``, killing the resolve. Catch the ValueError at
the adapter boundary and drop those entries (they can't survive
the typed wire anyway).
2. ``_run_resolver_subprocess`` (``pipenv/utils/resolver.py``)
stopped forwarding the subprocess's captured stderr to the
parent's stderr stream on the success path. Pre-refactor (see
``main`` branch ``venv_resolve_deps`` body), after a returncode-0
resolve and when non-verbose, the parent printed
``Warning: <subprocess stderr>`` so user-actionable notices
emitted from inside the resolver (most prominently
``check_if_package_req_skipped``'s "Could not find a matching
version of <pkg>; <markers>" message) reached the user's
terminal. ``read_stderr`` captures every line into
``stderr_lines`` for in-memory access via
``CompletedProcess.stderr`` but only echoes verbose /
download-progress lines live, so without the explicit forward
the warning was effectively swallowed. Restore the forward
inside the structured-response success branch.
Verified locally:
- ``test_resolve_skip_unmatched_requirements`` now passes (was the
last remaining failure after the prior ``resolved_default_deps``
dict-shape and diagnostic-recovery commits).
- Unit suite (785 tests) and resolver protocol golden still pass.
- Two-category lock reproducer (``six`` + ``tablib``) still
succeeds.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Contributor
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Pull request overview
This PR modernizes Pipenv’s resolver subsystem by migrating the parent↔subprocess protocol to a typed JSON schema and consolidating resolver execution behind a single canonical driver. It also adds wall-clock timeout enforcement and structured resolver diagnostics capture, with extensive new unit/integration coverage and pinned golden fixtures to keep the protocol stable over time.
Changes:
- Introduces
pipenv/resolver/as a package with a typedResolverRequest/ResolverResponseschema and a unifiedresolve_for_pipenv()driver used by both subprocess and in-process adapter paths. - Adds T_F.6 wall-clock timeout plumbing end-to-end (Pipfile/env/default precedence → request metadata → subprocess/in-process enforcement).
- Populates structured resolver diagnostics (
Diagnostics.resolver_log) and adds protocol/schema tests + golden-fixture integration canary.
Reviewed changes
Copilot reviewed 56 out of 56 changed files in this pull request and generated 3 comments.
Show a summary per file
| File | Description |
|---|---|
pipenv/resolver/schema.py |
New typed dataclass schema for resolver request/response envelopes and lock-entry representation. |
pipenv/resolver/core.py |
New unified resolver driver (resolve_for_pipenv) plus timeout guard + structured log capture. |
pipenv/resolver/main.py |
New subprocess entry point reading/writing typed JSON request/response files. |
pipenv/resolver/__init__.py |
Re-export shim for the resolver package surface. |
pipenv/resolver.py |
Removes the legacy monolithic resolver module in favor of the package. |
pipenv/utils/locking.py |
Removes legacy lockfile formatter; prepare_lockfile now consumes LockedRequirement (with transitional dict fallback). |
pyproject.toml |
Updates the pipenv-resolver console-script entry to point at pipenv.resolver.main:main. |
tests/unit/test_utils.py |
Ports legacy lockfile-entry formatter tests to LockedRequirement.from_install_requirement + adds typed prepare_lockfile smoke tests. |
tests/unit/test_resolver_schema.py |
New schema-focused unit tests: invariants, JSON round-trips, dispatch, golden parity, version mismatch, VCS coverage, comma-in-marker regression. |
tests/unit/test_resolver_core.py |
New tests for unified driver behavior (success, resolution error, internal error, marker override). |
tests/unit/test_resolver_parent_dispatch.py |
New parent-side dispatcher tests (request building, argv shape, structured-response dispatch). |
tests/unit/test_resolver_protocol_smoke.py |
New subprocess protocol smoke tests (stubbed success + schema mismatch + optional live network test). |
tests/unit/test_resolver_timeout.py |
New timeout enforcement tests (subprocess timeout → structured failure, precedence, request stamping, in-process SIGALRM guard). |
tests/unit/test_resolver_diagnostics.py |
New diagnostics capture tests (format, cap, handler cleanup, propagation behavior, JSON survivability). |
tests/unit/test_resolver_regressions.py |
Removes a regression test tied to deleted legacy functions, replaced by schema-level coverage. |
tests/unit/test_dependencies.py |
Removes legacy Entry-based tests, replaced by typed schema tests/fixtures. |
tests/unit/test_locking_no_mutation.py |
Updates resolver stub shape to return typed LockedRequirement results. |
tests/unit/test_core.py |
Updates documentation text referencing the canonical formatter. |
tests/unit/fixtures/resolver_schema/format_requirement_for_lockfile/*.json |
Adds/updates golden snapshots for parity gating of typed lockfile dict output. |
tests/unit/fixtures/resolver_schema/entry_get_cleaned_dict/*.json |
Adds/updates golden snapshots for parity gating of subprocess-side legacy shapes. |
tests/integration/test_resolver_protocol.py |
New integration canary capturing and pinning resolver request/response wire JSON with regen workflow. |
tests/integration/fixtures/resolver_protocol/request.json |
Golden request envelope fixture (normalized). |
tests/integration/fixtures/resolver_protocol/response.json |
Golden response envelope fixture (normalized). |
news/T_F.3.behavior.rst |
News fragment for structured conflict output. |
news/T_F.6.behavior.rst |
News fragment for resolver timeout enforcement behavior change. |
docs/dev/modernization-plan.md |
Updates the modernization plan with completed phases and implementation details. |
docs/dev/initiative-f-execution-plan.md |
Updates execution-plan status/log with completed waves and notes. |
.github/workflows/ci.yaml |
Updates GitHub Actions versions used in CI. |
.github/workflows/pypi_upload.yml |
Updates GitHub Actions versions used in release workflow. |
💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.
Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>
… not resolver sub-package Agent-Logs-Url: https://github.com/pypa/pipenv/sessions/e754d1f7-8ed9-42e9-8fdc-46a2c30157e9 Co-authored-by: matteius <479892+matteius@users.noreply.github.com>
…ct_url instead of duplicate lr.file Agent-Logs-Url: https://github.com/pypa/pipenv/sessions/495a8f65-b59e-4846-b0a8-39ddf4b4013f Co-authored-by: matteius <479892+matteius@users.noreply.github.com>
…ce/code-cleanup-phase3-resolver-typed-schema-2026-05
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Summary
Phase 3 of the pipenv maintenance-mode modernization stack. Bases on top of PR #6665 (Phase 2). Bundles the full T_F.3 typed-schema migration plus the four follow-up items from the prior phase-4 branch (T_F.4, T_F.5a design, T_F.6, T_F.7) merged in.
28 commits, +6735 / −1053 across
pipenv/andtests/, plus design doc updates and 2 news fragments. Touches zero vendored or patched files. 780 unit tests pass (was 651 baseline at start of Phase 2, 758 after T_F.3 alone → +22 from T_F.4/6/7).What's in this PR
T_F.3 — Execute the typed resolver subprocess schema (17 commits)
The structural rewrite of the pipenv ↔
pipenv-resolversubprocess protocol. Designed in PR #6665'sdocs/dev/initiative-f-typed-design.md(886 lines, maintainer-approved); executed here per the swarm-ready plan indocs/dev/initiative-f-execution-plan.md(4 waves: foundation, parallel-3, parallel-4, plan-bump).pipenv/resolver.py→pipenv/resolver/package with four modules:__init__.py(re-export shim for one-PR compatibility)schema.py(NEW, 899 lines) — 14 stdlib@dataclass(frozen=True)types:ResolverRequest,ResolverResponse, discriminatedResolverResult(ResolverSuccess/ResolutionError/InternalError),LockedRequirement,VCSPin,PackageSpecs,Source,ResolverOptions,ResolvedDeps,RequestMetadata,ConflictRecord,Diagnostics, +SCHEMA_VERSION = 1. Manualto_json_dict/from_json_dictround-trip (notdataclasses.asdict— breaks the discriminated union pattern).main.py(the oldpipenv/resolver.pyminus 156 lines of dead plumbing) — thin subprocess adapter: parses argv, reads--request-file, dispatches toresolve_for_pipenv, writes--response-file.core.py(NEW, 555 lines, from T_F.4) —resolve_for_pipenv(request) -> ResolverResponseis the single canonical driver. Both the subprocess adapter and the parent's in-process branch call it.Single canonical formatter
LockedRequirement.from_install_requirementabsorbs the behaviour from BOTH formerly-competing formatters:Entry.get_cleaned_dict(subprocess side) andformat_requirement_for_lockfile(parent side). Both deleted in this PR.prepare_lockfilenow consumesSequence[LockedRequirement]via the typedto_lockfile_dict()adapter.Dead surface deleted from the subprocess:
--pre,--clear,--system,--verbose,--category,--constraints-file,--resolved-default-deps-file,--parse-only,--pipenv-site, positionalpackagesPIPENV_RESOLVER_PYTHON_VERSION,PIPENV_EXTRA_PIP_ARGS,PIPENV_SITE_DIR(folded into typed request fields)Entry,PackageRequirement,process_resolver_results,whichstubFailure semantics fixed: today's non-zero-exit-as-only-failure-indicator is replaced with the discriminated
ResolverResultunion written to the response file on exit 0. Genuine subprocess crashes still produce non-zero exit + the legacy stderr-fallback path. Schema-version mismatch produces a structuredInternalErrorresponse AND non-zero exit (per Q2 sign-off).Tests:
tests/unit/test_resolver_schema.py(NEW, 678 lines / 62 tests) — invariants, JSON round-trip, golden-fixture parity against 27 committed snapshots, dispatch, schema-version-mismatch, VCS pins, comma-in-marker regression (Q7)tests/unit/test_resolver_parent_dispatch.py(NEW, 427 lines)tests/unit/test_resolver_protocol_smoke.py(NEW, 261 lines)tests/integration/test_resolver_protocol.py(NEW, 200 lines) — golden-fixture canary withPIPENV_REGEN_PROTOCOL_FIXTURES=1regen mechanismtests/unit/test_utils.py— 17format_requirement_for_lockfilecases ported to 20 typed cases (coverage grew)news/T_F.3.behavior.rst— one-line behavior note about structured error messages on dependency conflictsT_F.4 — Fold in-process and subprocess branches into one implementation
pipenv/resolver/core.py :: resolve_for_pipenv(request) -> ResolverResponseis now the only place the resolve plumbing lives. Eliminates duplication of:_apply_python_marker_overridedeleted frommain.py)resolve_packagesinvocation + result normalization (was in both_mainand thePIPENV_RESOLVER_PARENT_PYTHONbranch)ResolverResponsewrapping + variant dispatch (was duplicated in_mainexception handler)Both adapters are now thin:
pipenv/resolver/main.py:mainis 5 lines; the in-process branch inpipenv/utils/resolver.py:venv_resolve_depsis 8 lines.Stub-injection compatibility preserved across three existing test patterns (the dispatcher walks
sys.modulesin preference order sotest_resolver_core.py,test_locking_no_mutation.py, andtest_resolver_protocol_smoke.pycontinue to work).T_F.5a — Pluggable resolver backends DESIGN doc (sign-off gate)
No code change.
docs/dev/initiative-f-backends-design.md(NEW, 948 lines) proposes the architecture for landing alternative resolver backends (uv being the prime candidate) on top of the typed-schema substrate. Resolves the 4 open questions from F.2 §6a and surfaces 10 sign-off questions for the maintainer:[pipenv] resolver_backendvs[pipenv.resolver]vs[tool.pipenv.resolver]--backend NAMEvs--resolver-backend NAMEvs--use-uvPipfile.lock+_meta.resolver_backendvs distinct files_meta.resolver_backendvalue — omit vs explicit"pip"--allow-backend-switchLockedRequirement.resolver_backend/Diagnostics.resolver_name? (recommendation: neither).featurevs.behaviorConcerns from the existing
origin/uv-backendWIP (1000-line exploration that predates the typed schema) called out in the design:install/sync/update/auditwhenPIPENV_USE_UV=1because it writes onlypylock.toml. Other subcommands readPipfile.lock. Hidden by integration tests only runningpipenv lock.T_F.5 execution is gated on maintainer answers to the 10 questions and is NOT in this PR.
T_F.6 — Wall-clock timeout enforcement
Honours
request.metadata.deadline_secondsend-to-end:[pipenv] resolver_timeout_seconds> envPIPENV_RESOLVER_TIMEOUT_S> 1800s default. Stamped intoRequestMetadata.deadline_secondsso the schema records it.subprocess.run(timeout=deadline_seconds).TimeoutExpiredconverts to a structuredResolutionFailurewhose message names both override channels so the user knows how to extend.PIPENV_RESOLVER_PARENT_PYTHON=1):signal.SIGALRMdeadline guard. Unix only; no-op on Windows (subprocess path is the production one).tests/unit/test_resolver_timeout.py.news/T_F.6.behavior.rst— user-visible behaviour change: previously-hanging installs now die after the deadline with a structured error.T_F.7 —
Diagnostics.resolver_logpopulationT_F.3 reserved the field but left it as an empty tuple per Q9. This populates it:
pipenv+pip._internal.resolutionloggers (NOT pip download chatter — stderr remains that channel)"[LEVELNAME] message"per record"... (N records elided)"sentinelresolve_for_pipenvso both adapters get identical logs--verbosemode prints the structured log alongside the existing stderr stream.tests/unit/test_resolver_diagnostics.pyNo news fragment needed — purely additive (field went from empty to populated; no user-visible breakage outside verbose mode).
Still-queued work (not in this PR; not on a sibling branch yet)
docs/dev/initiative-f-backends-design.md. Will land on its own branch.Lockfilesubsystem fromProject.Pipfilesubsystem fromProject.unpack_url/get_http_url; delete the (then-empty)requirementslib.py.Test plan
pytest tests/unit/); was 651 baseline at start of Phase 2, 679 after Phase 2 alone, 758 after T_F.3 alone, +22 from T_F.4/6/7--request-fileand--response-filecontent against committed golden fixtures (tests/integration/fixtures/resolver_protocol/) withPIPENV_REGEN_PROTOCOL_FIXTURES=1regen workflowpipenv locksmoke: byte-identical lockfile (shaf162d2e398108da068327e701ee9472102db75565b86c0415420968db20ef679) produced via both subprocess andPIPENV_RESOLVER_PARENT_PYTHON=1in-process pathsEntry.get_cleaned_dict, zeroformat_requirement_for_lockfile, zeroPIPENV_RESOLVER_PYTHON_VERSION/PIPENV_EXTRA_PIP_ARGS/PIPENV_SITE_DIRreferences, zero dead argv flags inpipenv/resolver/main.pypip install -e . --force-reinstallis required after this lands so thepipenv-resolverconsole script on$PATHresolves to the newpipenv.resolver.main:mainentry (waspipenv.resolver:main)🤖 Generated with Claude Code