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2026-05-03fix(resolver): apply root "X as Y" aliases via pool second passnsfisis
Mirrors Composer's `RootPackageLoader::extractAliases` + `PoolBuilder::loadPackage` flow: strip the `as` clause from each root require so the SAT side sees only the LEFT-hand constraint, and after every package is loaded run a second pass that materializes an alias entry for any input matching `(name, version_normalized)`. Locked-only packages in a partial update are excluded via a new `ResolveRequest::locked_package_names` so they don't pick up the alias (`propagateUpdate=false` in Composer). Two adjacent fixes uncovered while making `install_aliased_alias` green: - `Version::cmp` treated unnamed wildcard branches (`1.0.x-dev`, `is_dev_branch=true && name=None`) as below every numeric version. They are semantically the same as the four-segment `*-dev` form Composer's `normalizeBranch` emits, so let only *named* branches take the shortcut. - `Constraint::Exact` / `NotEqual` used the derived `==`, which compared `is_dev_branch` field-by-field and missed the wildcard/numeric equivalence. Switch to `cmp` so both forms count as equal. - `Pool::matches_package` now falls back to parsing `pretty_version` when the `version` parse doesn't match the constraint, so a `dev-master` query lines up with a pool entry stored as the internal `9999999.x.x.x-dev` expansion. Net effect on installer fixtures: `install_aliased_alias` newly green, plus `aliased_priority`, `aliased_priority_conflicting`, and `install_dev_using_dist` come along for the ride. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-03fix(resolver): carry root composer.json conflicts onto the in-pool root entrynsfisis
The root pool entry now seeded from composer.json carried provides and replaces but no conflicts, so a root-level conflict like \`{"some/dep": ">=1.3"}\` was silently dropped. Composer keeps these on the RootPackage (which lives in the pool via RootPackageRepository), and the SAT generator turns them into rules that forbid any candidate matching the constraint — including a branch alias that would resolve to a matching version. Without that, Mozart cheerfully installs both the required dev branch and its conflicting alias. Plumb composer.json's \`conflict\` map through ResolveRequest as root_conflict and project it onto the root pool entry as PoolLink conflicts; all callers updated. Unblocks conflict_on_root_with_alias_prevents_update_if_not_required and conflict_with_alias_prevents_update installer fixtures. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-03fix(install): emit MarkAliasUninstalled and fix dev-branch upgrade directionnsfisis
Two pieces of Composer's update-trace machinery were missing: 1. VersionParser::isUpgrade in Composer\Package\Version (which overrides the upstream Semver one) substitutes dev-master / dev-trunk / dev-default with the 9999999-dev default-branch alias, then returns true whenever either side starts with `dev-`. Mozart's is_upgrade compared via the generic version order, so dev-master → dev-foo came out as Downgrading. Port the override. 2. Transaction::calculateOperations seeds removeAliasMap from the currently-installed AliasPackages and emits MarkAliasUninstalled for every entry not covered by the new lock. Mozart never emitted those, so updating away from a branch-aliased package produced no trace line for the alias retirement. Walk installed.json's `extra.branch-alias` map, compare against the new lock's aliases[] block, and emit a MarkAliasUninstalled PackageOperation (a new variant on the executor surface — no filesystem effects, only the trace recorder cares). Unblocks update_alias, update_alias_lock2, and update_no_dev_still_resolves_dev installer fixtures. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-03fix(resolver): seed root package into pool as fixed entrynsfisis
Composer's RootPackageRepository puts a clone of the root package into the pool as a fixed entry — its `require` / `require-dev` cleared, but its name, version, provides, and replaces preserved. That way a transitive `require` pointing back at the root resolves through the pool the same way any other reference would, and legal circular dependencies (root requires A, A requires root) work. Mozart had no such seed: the rule generator only knew about the root through the explicit root-require / root-provide / root-replace tables, so a transitive consumer requiring the root by name failed with no provider. Plumb root_version through ResolveRequest (RawPackageData gains a matching `Option<String>` field), build a fixed PoolPackageInput for the root with provides/replaces lifted from request.root_provide / root_replace, and skip the root by name when collecting the resolver's output so it doesn't leak into the lock file. Falls back to `1.0.0+no-version-set` (Composer's RootPackage::DEFAULT_PRETTY_VERSION) when the root composer.json omits `version`. Unblocks circular_dependency2, conflict_against_replaced_package_problem, and provider_conflicts installer fixtures. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-03fix(install): switch update trace to dist-ref mode when source refs matchnsfisis
Composer's UpdateOperation::format renders the from/to versions through DISPLAY_SOURCE_REF_IF_DEV first, but if both sides come out identical it re-renders in DISPLAY_SOURCE_REF (when source refs differ) or DISPLAY_DIST_REF (when only dist refs differ) so the trace doesn't show a useless `pkg (X => X)` line. Mozart skipped the switch and emitted the default form on both halves, so a same-version-different-dist-ref update showed up as `dev-master def000 => dev-master def000` instead of `dev-master def000 => dev-master`. Add format_update_pretty_versions to render the pair Composer's way and plumb the resolved to_full_pretty through PackageOperation::Update so the trace recorder uses it verbatim. Unblocks update_installed_reference and update_picks_up_change_of_vcs_type installer fixtures. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-03fix(install): treat dev-reference shifts as upgradesnsfisis
Composer's Transaction fires an UpdateOperation when an installed package's source/dist reference moved, even if the version string is unchanged — that is how a `dev-main#abcd` root require pinning a new commit propagates through `composer install`. Mozart was checking only (name, version) and short-circuiting to Skip, so the package stayed pinned to whatever reference installed.json carried. Compare references in compute_operations and route mismatches into Action::Update. The trace recorder needs the from-side display string to include the reference suffix (`dev-master abc123`) so the EXPECT output matches Composer's UpdateOperation::format; thread that through PackageOperation::Update as a separate from_full_pretty field while keeping from_version (sans suffix) for the upgrade-vs-downgrade direction check, which has to compare normalized versions like Composer's VersionParser::isUpgrade does. Unblocks update_reference, update_reference_picks_latest, and updating_dev_updates_url_and_reference installer fixtures. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-03refactor: switch internal maps/sets from HashMap to IndexMapnsfisis
Adopt indexmap workspace-wide so iteration order is deterministic and follows insertion order. The non-deterministic order of std HashMap otherwise leaks into resolver decisions when multiple valid solutions exist (e.g. cyclic require pairs under prefer-lowest), making behavior flaky and divergent from Composer's PHP-array semantics. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-03feat(resolver): apply config.platform overrides on top of detected platformnsfisis
Mirrors `Composer\Repository\PlatformRepository`'s `$overrides` handling: each override either replaces a detected platform package version or adds a virtual one (e.g. ext-dummy), and `false` disables the package. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-03fix(resolver): fail when a root require has no matching providersnsfisis
Mirror Composer's `Solver::checkForRootRequireProblems`: a root require that resolves to zero pool providers produces no SAT rule, so the solver previously succeeded with an empty plan instead of reporting the unresolvable requirement. `RuleSetGenerator::generate` now returns those misses alongside the rule set, and `resolve()` short-circuits into `ResolveError::NoSolution` so install/update exit with code 2 to match Composer. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-03fix(registry): respect priority order across inline package reposnsfisis
When a `type: package` repository declares a name already declared by a higher-priority `type: package` entry, drop it. Mirrors Composer's RepositorySet first-repo-wins semantics so duplicate names across inline repositories cannot promote a lower-priority version into the pool. Greens 4 installer fixtures: install_prefers_repos_over_package_versions, repositories_priorities2, repositories_priorities4, update_package_present_in_lower_repo_prio_but_not_main_due_to_min_stability. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-03fix(resolver): substitute self.version in pool link constraintsnsfisis
Composer's ArrayLoader and AliasPackage rewrite "self.version" to the declaring package's own version when building Link objects, so a package's replace/provide/conflict/require constraints carry a concrete "= <version>" rather than the literal string. Mozart was passing "self.version" through verbatim, which then failed to parse in Pool::matches_package and caused replace_alias.test to fail to find a provider for c/c 1.* via a/a's branch alias. Push the substitution into make_pool_links, threading the source package's normalized version through the call sites in resolver.rs (packagist/inline/composer-repo) and vcs_bridge.rs. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-02fix(resolver): honor root self-provide/replace as require fulfilmentnsfisis
Port Composer's RuleSetGenerator::createRequireRule self-fulfilling branch: when the root composer.json's `provide` or `replace` covers a name it also requires (with intersecting constraints), skip emitting an install-one-of rule for that root require. Composer relies on the root package being a fixed entry in the pool so whatProvides() includes it; Mozart does not yet add the root to the pool, so the same decision is made via explicit `root_provide` / `root_replace` tables threaded through ResolveRequest. Without this, an inline repo package whose name matches the root's provide was being force-installed. Fixes installer fixtures `provider_satisfies_its_own_requirement` and `replacer_satisfies_its_own_requirement`.
2026-05-02feat(resolver): support inline #ref pin and default-branch aliasnsfisis
Adds the missing pieces for installer fixtures that pin a dev package via `dev-foo#hex` or rely on Composer's `default-branch: true` synthetic `9999999-dev` alias. Mirrors Composer at four layers: 1. `mozart_semver::parse_single` strips `dev-...#hex` / `....x-dev#hex` suffixes from constraints (Composer's `parseConstraint` regex). 2. `PackagistVersion` carries `default_branch`. When set on a `dev-` package with no numeric prefix, `packagist_to_pool_inputs` emits the synthetic `9999999-dev` alias — but skips it when an explicit `extra.branch-alias` already covers the version (matches `ArrayLoader::getBranchAlias`). 3. `RuleSetGenerator::generate` picks up `addRulesForRootAliases`: any pool alias whose target was added gets its own alias↔target rules so the SAT solver pulls them in together. 4. `lockfile::generate_lock_file` extracts root `#hex` overrides from `require`/`require-dev` and rewrites source/dist references (and github/gitlab/bitbucket archive URLs) on the matched package, the `setSourceDistReferences` ladder Composer runs in `PoolBuilder`. Resolver also infers `Stability::Dev` from a `dev-foo` style single-atom constraint when no explicit `@flag` is given, mirroring the second loop of `RootPackageLoader::extractStabilityFlags` so the package isn't filtered out under default `stable` minimum-stability. Newly green: install_branch_alias_composer_repo, install_reference, conflict_with_alias_prevents_update_if_not_required, unbounded_conflict_matches_default_branch. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-02feat(resolver): add branch-alias support across the resolution pipelinensfisis
Plumb Composer's `extra.branch-alias` mechanism end-to-end so a dev branch (e.g. `dev-foobar`) can be installed alongside its numeric alias (e.g. `3.2.x-dev`) and resolve constraints written against the alias target. Concretely: - `mozart-semver`: stop treating pure-numeric `-dev` as a wildcard branch — `3.2.9999999.9999999-dev` (the form `normalizeBranch` emits) now parses as a classical version with `is_dev_branch=false`, so constraints like `3.2.*` match it. - `mozart-registry/composer_repo`: load `type: composer` repositories from `file://` URLs (legacy embedded `packages.json`). - `mozart-registry/resolver`: emit pool entries in pairs for dev branches with `extra.branch-alias`, link them via `is_alias_of`, and apply `@dev`/`@beta` etc. stability suffix flags from root requires. - `mozart-sat-resolver`: alias rules (`PackageAlias` / `PackageInverseAlias`) so alias and target install together; alias packages skipped from same-name conflict indexing. - `mozart-sat-resolver/policy`: `DefaultPolicy` now honors `prefer_stable` via Composer's stability-tier comparison. - `mozart-registry/lockfile`: split resolved set into real packages vs. alias entries; populate the `aliases[]` block. - `mozart-registry/installer_executor`: new `MarkAliasInstalled` operation; `format_full_pretty_version` mirroring `BasePackage::getFullPrettyVersion` (appends source ref[0..7] for dev/git packages). - Test harness rewrites fixture-relative `file://` URLs to absolute paths. Newly green fixtures: `install_branch_alias_composer_repo`, `alias_solver_problems`, `alias_solver_problems2`, `conflict_with_all_dependencies_option_dont_recommend_to_use_it`, `unbounded_conflict_does_not_match_default_branch_with_branch_alias`, `unbounded_conflict_does_not_match_default_branch_with_numeric_branch`. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-02fix(installer): match Composer's transaction order and uninstall labelnsfisis
Three coupled changes that bring `compute_operations` + the in-process trace recorder into byte-parity with Composer's `Transaction::__toString` output: - `TraceRecorderExecutor`: emit "Removing X (V)" instead of "Uninstalling X (V)" — Composer's `UninstallOperation::__toString` uses "Removing". - `install_from_lock`: run removals before installs/updates to mirror `Transaction::moveUninstallsToFront`. Both dry-run and real-execution branches now emit the same prefix order. - `topological_sort`: replace recursive DFS with the stack-based DFS that Composer uses in `Transaction::calculateOperations`. Roots are seeded reverse-alphabetically (matching `setResultPackageMaps`'s uasort with `strcmp(b, a)`), and `getProvidersInResult` is mirrored by treating a package's `provide`/`replace` keys as additional name targets when resolving a `require` link. To make the third change work end-to-end, `LockedPackage` gains typed `provide` and `replace` fields (Composer's lock preserves them; Mozart was silently dropping them). `packagist_version_to_locked_package` now copies them through. Unignores 13 installer fixtures (10 newly green from the fix, 3 that were already green-but-still-flagged): conflict_downgrade_nested, install_from_lock_removes_package, install_security_advisory_matching_dependency, load_replaced_package_if_replacer_dropped, partial_update_keeps_older_dep_* (×2), partial_update_security_advisory_matching_locked_dep, provider_packages_can_be_installed_together_with_provided_if_both_installable, remove_deletes_unused_deps, replace_priorities, update_allow_list_require_new_replace, update_allow_list_with_dependencies_require_new_replace, update_requiring_decision_reverts_and_learning_positive_literals. Installer scoreboard: 75/187 → 88/187. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-02test(installer): switch fixtures to in-process harnessnsfisis
Replaces the spawn-based runner in tests/installer.rs with the in-process harness from Step E. Every fixture now goes through mozart::commands::{install,update}::run with an empty RepositorySet (Composer's `'packagist' => false` test config) and a TraceRecorderExecutor (Composer's InstallationManagerMock), and the EXPECT section is now asserted against the recorder's trace - load-bearing for behavior parity, not just exit-code. The original CI failure (suggest_replaced) is now legitimately tested: the empty RepositorySet makes b/b unreachable just like Composer's test config, the inline package repo's eager preload finds c/c which replaces b/b, and the topological install order in compute_operations produces the c/c -> a/a trace the fixture pins. Strict trace assertion surfaced 60 Mozart-vs-Composer divergences that the exit-code-only spawn runner had been silently ignoring. Each is marked `installer_fixture\!(name, ignore)` for now; the categories break down roughly as: - alias handling (alias_in_lock2, install_aliased_alias, update_alias*) - replace / provider trace shape (replace_priorities, provider_satisfies_its_own_requirement, replacer_*) - update direction strings (update_changes_url, update_reference, update_dev_*) - partial-update + lock interactions (partial_update_*) - allow-list with replace/dependency interactions (update_allow_list_with_dependencies_require_new*) These each become individual follow-up Mozart bugs rather than mass silent-pass. Also marks prefer_lowest_branches as ignore: it's a real flake driven by HashSet iteration order in the resolver, where two equivalent candidates can be picked in either order. That's a separate determinism bug worth its own fix. The proxy-hack env-vars in mozart-test-harness::runner are removed - no test currently spawns the binary, and the in-process harness expresses Packagist disablement directly via RepositorySet::empty rather than relying on TCP failure to suppress network calls. Headline numbers: 75 passed (in-process, exit-code + EXPECT trace) + 112 ignored, vs prior 136 passed (spawn, exit-code only) + 51 ignored. The drop in passing count reflects the stricter assertion bar, not new regressions. Also removes tests/installer_in_process.rs - its single proof-of- concept fixture (suggest_replaced) is now part of the unified installer.rs harness. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-02feat(installer): add trace recorder and topo install ordernsfisis
Adds TraceRecorderExecutor (Composer's InstallationManagerMock analog), which records every install/update/uninstall as a string matching Composer's *Operation::__toString output (after strip_tags) - the load-bearing assertion target for in-process fixture tests. Two changes were needed to make the recorder useful: - InstallerExecutor::uninstall_package gains a version parameter, and install_from_lock now looks up both the uninstall and the Update-from-version from installed.json. Previously the Update path passed the new version as a placeholder; the recorder needs the real old version to emit `Upgrading pkg (old => new)`. - compute_operations now topologically sorts the lock contents (deps before dependents) before computing actions, mirroring Composer's Transaction::calculateOperations. Without this, packages would install in alphabetical order and the trace would diverge from Composer's expectation. Also adds crates/mozart/tests/installer_in_process.rs with the in-process harness scaffold: parses the same .test fixtures, builds a tempdir, calls commands::install::run / update::run with an empty RepositorySet (no Packagist) and a TraceRecorderExecutor, then asserts exit code + EXPECT trace. One fixture wired up: suggest_replaced - the original CI failure that motivated this whole DI refactor. It now passes on the in-process path because the empty RepositorySet makes b/b unreachable just like Composer's `'packagist' => false` test config, and the resolver finds c/c (which replaces b/b) via the inline package repo's eager preload. Step F will migrate every fixture currently in installer.rs to the new harness; remaining divergences (alias handling, output ordering, replace trace shape, etc.) will surface as individual follow-ups. All 136 existing spawn-based fixtures + 114 mozart-registry tests + 541 mozart lib tests still green; clippy clean. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-02refactor(registry): plumb RepositorySet and executor through callersnsfisis
ResolveRequest and LockFileGenerationRequest now take Arc<RepositorySet> instead of a raw Cache. install_from_lock now accepts &mut dyn InstallerExecutor instead of constructing FilesystemExecutor internally. Both changes expose the DI injection points needed by the upcoming in-process test harness, where Packagist must be replaced with an empty RepositorySet (Composer's `'packagist' => false` test config) and filesystem install execution must be replaced with a tracing recorder (Composer's InstallationManagerMock). The eager VCS scan and inline-package preload still happen inside resolve(), so the RawRepository array is kept on ResolveRequest as raw_repositories - migrating those through RepositorySet remains a follow-up. RepositorySet gains with_packagist and empty constructors so production callers and future tests have a uniform construction shape. All 136 enabled installer fixtures + 114 mozart-registry tests + 541 mozart lib tests still green; clippy clean. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-02refactor(registry): route Packagist queries through RepositorySetnsfisis
Replace direct packagist::fetch_package_versions calls in resolver::resolve (seed + transitive loops) and lockfile::generate_lock_file with repo_set.load_packages calls. PackagistRepository now propagates errors instead of swallowing them, so the seed loop's strictness and the transitive loop's local-leniency are both preserved exactly. VCS and inline-package repositories are still preloaded directly into the pool builder for now, with their names tracked in skip lists so we don't double-load them through the trait. Migrating them through RepositorySet is a follow-up - vcs_to_pool_inputs and packagist_to_pool_inputs differ in dev-branch handling that needs to be unified first. All 136 enabled installer fixtures + 114 mozart-registry tests + 541 mozart lib tests remain green; clippy clean. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-02refactor(registry): introduce Repository and InstallerExecutor traitsnsfisis
Sets up DI scaffolding for in-process installer E2E tests, mirroring how Composer's PHPUnit suite swaps Packagist (FactoryMock) and the install manager (InstallationManagerMock) without touching the network or filesystem. Additions: - Repository trait + RepositorySet (Composer's RepositoryInterface analog), with PackagistRepository, InlinePackageRepository, VcsRepository impls. - InstallerExecutor trait (Composer's InstallationManager analog) with FilesystemExecutor extracted from install_from_lock. install_from_lock now delegates per-package install/uninstall verbs to FilesystemExecutor; console output orchestration stays in the caller so existing --EXPECT-OUTPUT-shape assertions remain comparable. No behavior change - all 136 enabled installer fixtures still pass. Also tightens the installer_fixture\! ignore form to a single token (installer_fixture\!(name, ignore)) for readability. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-02feat(resolver): honor --ignore-platform-reqs and wildcard patternsnsfisis
The pool builder and rule-set generator only consulted an exact-match HashSet, so `--ignore-platform-reqs` (no value) and `--ignore-platform-req=ext-foo-*` fell through to the SAT layer and produced "no matching package found" for transitive platform deps. Track the bool flag separately and run each platform name through `mozart_core::matches_wildcard` against the configured patterns. Unblocks four installer fixtures: install-{ignore-platform-package-requirement-wildcard,ignore-platform-package-requirements} update-{ignore-platform-package-requirement-wildcard,ignore-platform-package-requirements}. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-01feat(registry): support inline 'type: package' repositoriesnsfisis
Composer's PackageRepository lets composer.json embed full package metadata under repositories[].package, mirroring the on-disk Packagist response shape. The vast majority of installer fixtures under composer/tests/Composer/Test/Fixtures/installer (179 of 189) rely on this — they declare every package they need inline rather than hitting the network. Three pieces wire this into Mozart: 1. mozart-core::package::RawRepository: relax `url` to Option<String> (Composer enforces presence per repo type, not at JSON parse) and add `package: Option<Value>` to receive the inline definition, which can be a single object or an array. 2. mozart-registry::inline_package: a new module that walks `&[RawRepository]`, picks out type=package entries, and reshapes each `package` payload into a PackagistVersion (auto-computing version_normalized when omitted, matching Packagist's output). 3. resolver::resolve and lockfile::generate_lock_file: feed inline packages into the SAT pool builder and short-circuit the Packagist fetch when generating the lock entry for a resolved inline package. The package-name set is shared with the existing VCS-skip logic so the seed and transitive loops don't double-fetch. One additional install-time change: in install_from_lock, packages that have neither dist nor source are now skipped silently instead of bailing with "no dist or source information". This mirrors Composer's MetapackageInstaller (no installer for type=metapackage) and is also what Composer's own AllFunctionalTest exercises via InstallationManagerMock — most inline-package fixtures define synthetic packages with no download metadata, expecting the install operation to be recorded but not actually run. Net effect: installer fixture scoreboard jumps from 7/187 to 103/187. The 84 fixtures still ignored hit issues unrelated to inline-package plumbing — aliases, replace/provide chains, dev-reference handling, allow-list updates, etc. — and are tracked separately. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-01fix(registry): accept composer.lock without content-hashnsfisis
Composer's `Locker` treats `content-hash` as optional with BC support (see Locker::isLocked() / isFresh() lines 142-147): if a lock predates the field — or, in the case of installer fixtures, deliberately omits it — Composer simply considers the lock "not fresh" against any composer.json. Mozart's deserializer was strict, rejecting the lock with `missing field content-hash` before any of the install-time checks could run. Default the field to empty via `#[serde(default)]`. With an empty hash, `is_fresh()` returns false (matching Composer's BC behavior, so the freshness warning still fires) and downstream code that overwrites `content_hash` continues to work unchanged. Closes the parsing barrier exercised by the updating-dev-from-lock-removes-old-deps installer fixture. Note: matching Composer's exact operations trace ("Upgrading a/devpackage …", alias-removal lines) requires a `compute_operations` that compares package source references — out of scope for this change and tracked in .ken/test_design.md §7.2 under "EXPECT (operations trace) 比較". Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-01feat(install): verify lock file satisfies composer.json requiresnsfisis
Mirrors Composer's Installer::doInstall() check: before installing from an existing composer.lock, walk every root require (and require-dev in dev mode) and confirm the lock contains a satisfying package. If any are missing or fail the constraint, print the standard bullet-list diagnostic and exit with LOCK_FILE_INVALID (4) instead of blindly attempting to install and failing later with a misleading "no dist or source information" error. Closes the gap exercised by the outdated-lock-file-fails-install installer fixture. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-01refactor: fix clippy warningsnsfisis
Replace if-let/else-return with `?`, swap `as_ref().map(|k| k.as_slice())` for `as_deref()`, and switch test fixtures from `vec\![]` to array literals where ownership is unneeded. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-01fix(registry): default missing composer.lock _readme to canonical textnsfisis
Composer treats _readme as write-only metadata: Locker.php injects it on write but the loader never requires it. Mozart's deserializer was strict, so any composer.lock without _readme failed to parse — including most fixtures under composer/tests/.../installer/*.test. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-01feat(registry): accept v1 (bare array) installed.jsonnsfisis
Composer's FilesystemRepository::initialize branches on isset($data['packages']) — object form is v2, bare array is v1 — and treats dev-package-names/dev as optional. Mirror that in InstalledPackages::read so Mozart consumes shared .test fixtures (which use v1) without harness preprocessing, and so installs over v1-era vendor directories keep working. Drop the v1→v2 wrapper that was added to mozart-test-harness for the same reason. Removes #[ignore] from update_to_empty_from_locked (2/187 green). Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-02-24fix(cache): enable dist archive caching for all commandsnsfisis
files_cache was Option<&Cache> and install_from_lock always passed None, so downloaded zip/tar archives were never cached. Make the parameter non-optional (&Cache) and wire it through every command that downloads dist archives (install, update, require, remove, create-project, archive). The Cache internally respects --no-cache via its enabled flag, so the Option wrapper was unnecessary. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-02-24fix(solver): iterate live watch chain to prevent infinite loop in propagationnsfisis
The watch graph's propagateLiteral used a cloned chain for iteration while checking the live chain for bounds. After move_watch removed a node, the stale clone kept re-reading the same node index, causing an infinite loop on large dependency sets (e.g. laravel/laravel). Now re-fetch the live chain each iteration, matching Composer's SplDoublyLinkedList semantics where remove() advances the iterator. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-02-24feat(cache): enable repo cache for all Packagist API callsnsfisis
Remove the Option wrapper from repo_cache in ResolveRequest, LockFileGenerationRequest, and fetch_package_versions. All commands now initialize a Cache via build_cache_config(cli.no_cache), ensuring Packagist metadata is cached to disk (respecting --no-cache flag). Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-02-23feat(tracing): instrument network requests with tracing spansnsfisis
Add #[tracing::instrument] and debug logs to all HTTP-calling functions in mozart-registry and mozart-vcs for request-level observability (URL, status code, cache hits, download size). Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-02-23refactor(vcs): convert VcsDriver trait to native asyncnsfisis
Replace manual tokio::runtime::Handle::current().block_on() calls with native async/await throughout all VCS drivers. Introduce AnyVcsDriver enum for static dispatch to avoid dyn trait with async methods. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-02-23feat(vcs): add mozart-vcs crate for VCS repository supportnsfisis
Implement VCS driver/downloader infrastructure mirroring Composer's VCS subsystem. Includes drivers for GitHub, GitLab, Bitbucket, Forgejo, Git, Hg, and SVN with API-based metadata resolution, plus source downloaders for Git/Hg/SVN. Integrates into mozart-registry via vcs_bridge module to scan VCS repositories and feed discovered packages into the SAT resolver. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-02-23fix(update): implement --with constraints, inline shorthand, and APCu ↵nsfisis
passthrough - Parse and apply --with temporary constraints to the resolver - Support inline constraint shorthand (vendor/pkg:1.0.*) - Reject --lock combined with specific package names - Filter magic keywords (lock/nothing/mirrors) from package list - Pass APCu CLI flags through to InstallConfig instead of hardcoding Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-02-22feat(search): display abandoned package indicator in search resultsnsfisis
Parse the `abandoned` field from Packagist search API responses and show a "! Abandoned !" warning inline, matching Composer's behavior. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-02-22fix(resolver): handle virtual packages and deduplicate pool explorationnsfisis
Virtual/meta packages (e.g. "psr/http-client-implementation") don't exist on Packagist and caused a fatal error during transitive dependency exploration. These packages are resolved via provides/replaces from other packages already in the pool, so 404 errors are now skipped. Also fix PoolBuilder::next_pending() repeatedly returning the same virtual package name by tracking explored names in a HashSet, since virtual packages are never added to inputs and the old check (inputs.any(name)) never matched them. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-02-22fix(registry): handle Stability::Dev in version constraint buildernsfisis
Replace unreachable\!() with proper @dev suffix output. Although Dev is normally handled by an early return, this prevents a panic if the control flow is ever refactored. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-02-22fix(platform): inject composer pseudo packages into resolvernsfisis
composer-runtime-api, composer-plugin-api, and composer are Composer pseudo packages that don't exist on Packagist. The resolver was trying to fetch them remotely (HTTP 404) because PackageName::is_platform() didn't recognize them and detect_platform() didn't inject them. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-02-22feat(resolver): replace pubgrub with Composer-ported SAT solvernsfisis
Add mozart-sat-resolver crate implementing a CDCL SAT-based dependency resolver ported from Composer's DependencyResolver. This replaces the pubgrub library to ensure identical resolution behavior with Composer. The new crate includes: pool (package storage with integer IDs), rule/rule_set/rule_set_generator (constraint encoding), decisions (assignment tracking), rule_watch_graph (2-watched literal BCP), solver (CDCL loop with conflict analysis and clause learning), policy (version preference), problem (Composer-style error messages), and transaction (install/update/uninstall operation computation). The registry resolver is rewritten to use PoolBuilder → RuleSetGenerator → Solver pipeline instead of pubgrub's DependencyProvider trait. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-02-22fix(resolver): replace ComposerVersion(u16) with semver::Version(u64)nsfisis
ComposerVersion used u16 segments (max 65535), causing overflow for PHP extensions like ext-dom (version 20031129). The extension became invisible to the resolver, failing create-project with "depends on ext-dom" errors. Use mozart_semver::Version (u64 segments) directly as pubgrub's version type, eliminating the overflow and redundant conversion layer. Also fixes Ord for patch pre-releases (patch1 > stable) and adds Display impl required by pubgrub. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-02-22refactor: reorganize crates to match Composer subpackage structurensfisis
Rename mozart-constraint to mozart-semver (mirrors composer/semver) and extract mozart-class-map-generator from mozart-autoload (mirrors composer/class-map-generator). No logic changes. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-02-22fix(resolver): replace __root__ with actual package name in error messagesnsfisis
Composer never shows the internal __root__ identifier to users. Add root_name field to ResolveRequest so the resolver can substitute the real package name (e.g. "laravel/laravel") in pubgrub error reports. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-02-22fix(platform): detect PHP version from runtime instead of hardcoding 8.1nsfisis
PlatformConfig::new() was hardcoded to PHP 8.1 with a fixed extension list, causing resolution failures for packages requiring newer PHP (e.g. Laravel 12 requires >=8.2). Now calls detect_platform() to discover the actual PHP version, extensions and capabilities. Also adds a mutex to composer_home_dir tests to prevent env-var races. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-02-22chore: cargo fmtnsfisis
2026-02-22refactor(http): centralize User-Agent string in mozart-corensfisis
Add mozart_core::http::user_agent() that returns a consistent "Mozart/<version> (<os>; <arch>)" string. Replace all scattered user-agent definitions across mozart-registry and mozart CLI commands. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-02-22feat(metadata-minifier): add mozart-metadata-minifier cratensfisis
Port composer/metadata-minifier to Rust as an independent workspace crate. Implements expand() and minify() for Packagist's delta-encoded version metadata. Update mozart-registry to use the new crate for transparent minified response handling, and add __unset sentinel support to PackagistVersion deserialization. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-02-22refactor(async): migrate from blocking HTTP to async/await with tokionsfisis
Replace reqwest::blocking with async reqwest across the entire codebase. All command execute functions, registry API calls (packagist, downloader, resolver, lockfile), and the main entry point now use async/await with the tokio runtime. The pubgrub resolver runs on spawn_blocking since its DependencyProvider trait is synchronous, using Handle::block_on for async I/O within that context. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-02-22refactor(workspace): split monolithic crate into 6 workspace cratesnsfisis
Extract modules from the single `mozart` crate into 5 focused library crates to improve compilation parallelism and architectural clarity: - mozart-constraint: version constraint parser (independent) - mozart-core: base types, console, validation, platform utilities - mozart-archiver: archive creation (tar, zip, bzip2) - mozart-registry: Packagist API, cache, resolver, downloader, lockfile - mozart-autoload: autoloader generation and PHP scanner Refactor Console::from_cli and build_cache_config to accept primitive args instead of &Cli to break circular dependencies. Introduce [workspace.dependencies] for centralized version management. Remove 9 unused direct dependencies from the CLI crate. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>