Inject base-directory seam for workspace resolution and migrate last EnvLock users off CWD mutation (#493) - #581
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`resolve_absolute_workspace_root` and `open_manifest_workspace` now accept an `Option<&Path>` base that anchors relative manifest parents. `None` keeps the ambient `env::current_dir()` fallback, so production behaviour is unchanged (query.rs passes `None`); tests inject the temporary directory through the seam instead of mutating the process CWD. The manifest workspace unit tests drop the local `CurrentDirGuard` struct and the `EnvLock` import entirely, satisfying the AGENTS.md mandate that no test mutates in-process environment or working-directory state. Part of #493; unblocks the EnvLock/CwdGuard deletions in #494.
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Summary
WalkthroughUpdate manifest workspace resolution to accept an optional base directory. Use the temporary workspace in relative-path tests. Pass ChangesManifest workspace path resolution
Suggested labels: Poem
🚥 Pre-merge checks | ✅ 17 | ❌ 3❌ Failed checks (3 warnings)
✅ Passed checks (17 passed)
✨ Finishing Touches📝 Generate docstrings
🧪 Generate unit tests (beta)
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Reviewer's GuideInjects an optional base-directory parameter into manifest workspace resolution to avoid relying on process CWD, updates the single production caller, and refactors workspace tests to use the new seam instead of mutating global environment/CWD state, thereby eliminating remaining EnvLock usage in this area. Sequence diagram for injected manifest workspace base resolutionsequenceDiagram
participant Caller as Manifest caller
participant Workspace as open_manifest_workspace
participant Resolver as resolve_absolute_workspace_root
participant CWD as Process current directory
participant FS as Workspace filesystem
Caller->>Workspace: open_manifest_workspace(path, base)
Workspace->>Resolver: resolve_absolute_workspace_root(parent, base)
alt base is Some(dir)
Resolver->>Resolver: anchor.join(parent)
else base is None
Resolver->>CWD: current_dir()
CWD-->>Resolver: ambient directory
Resolver->>Resolver: anchor.join(parent)
end
Resolver-->>Workspace: absolute workspace root
Workspace->>FS: Dir::open_ambient_dir(root)
FS-->>Workspace: capability-scoped workspace
Workspace-->>Caller: ManifestWorkspace
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leynos
marked this pull request as ready for review
August 23, 2026 01:18
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Comment on lines
+54
to
+58
| /// `base` anchors relative manifest paths for tests; `None` keeps the ambient | ||
| /// current-directory resolution used by production callers. | ||
| pub(super) fn open_manifest_workspace( | ||
| path: &Path, | ||
| base: Option<&Path>, |
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This introduces a new injection seam, but the commit does not update any architecture, design, or developer documentation to define its ownership, permitted call sites, and composition rules. The inline statement that it is “for tests” does not establish whether production callers may reuse it or how it relates to the repository's existing environment-seam taxonomy; document that policy in the appropriate indexed guide as required.
AGENTS.md reference: AGENTS.md:L111-L119
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Inline comments:
In `@src/manifest/workspace.rs`:
- Around line 25-30: Update the workspace root resolution around the anchor
construction to convert a relative Some(base) path into an absolute path
anchored at env::current_dir() before joining utf8_parent, while preserving
absolute base paths and the existing error context. Add coverage for
Some(Path::new(".")) asserting workspace.root.is_absolute().
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📒 Files selected for processing (3)
src/manifest/query.rssrc/manifest/tests/workspace.rssrc/manifest/workspace.rs
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A relative `Some(base)` (for example `Path::new(".")`) was joined verbatim
onto the parent, which could yield a relative workspace root and violate
`ManifestWorkspace::root`'s documented absolute-path contract. Anchor a
relative base at `env::current_dir()` before joining, keep absolute bases
as-is, and preserve the existing error context for the `None` fallback.
The absolute-parent fast path is unchanged.
Add rstest coverage for `Some(Path::new("."))` asserting the reported root
is absolute, plus property tests over generated relative and absolute
parents and optional bases pinning absolute-parent precedence, verbatim
base anchoring, and the always-absolute guarantee for relative parents.
Addresses the code-review findings on #493.
Record the `base: Option<&Path>` working-directory seam introduced on `resolve_absolute_workspace_root` and `open_manifest_workspace`: its ownership, permitted call sites (production passes `None`; tests inject a directory), composition rules (absolute parent wins, relative parent joins onto the base, relative bases anchor at the working directory), and its relation to the environment-seam taxonomy in ADR-008. Addresses the developer-documentation review finding on #493.
The pinned toolchain's clippy `manual-main-separator-str` lint rejects taking a reference to `MAIN_SEPARATOR.to_string()`. Join with the `&'static str` `MAIN_SEPARATOR_STR` instead, keeping the `char` `MAIN_SEPARATOR` only for the inline `format!` placeholders. Resolves the lint failure surfaced by `make lint` on the workspace-root property tests.
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leynos
marked this pull request as draft
August 23, 2026 21:03
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Closes #493
Summary
Adds an
Option<&Path>base-directory seam to manifest workspace resolution soresolve_absolute_workspace_rootandopen_manifest_workspaceno longer need toread the process working directory unconditionally.
Nonekeeps the ambientenv::current_dir()fallback, preserving production behaviour (the soleproduction call site in
src/manifest/query.rspassesNone).This is the final step in retiring the two last
EnvLock/CwdGuardusersoutside
tests/bdd/:src/manifest/tests/workspace.rs— the localCurrentDirGuardstruct (whichheld an
EnvLockand mutated the process CWD viastd::env::set_current_dir)is deleted. Tests now inject the temp directory through the base seam or pass
absolute manifest paths, and no test in the file touches in-process
environment or CWD state.
tests/env_path_tests.rs— confirmed already free ofEnvLock(it uses the pure
prepend_path_value+CommandEnvseam); unchanged.Both migrations together unblock the
env_lock.rs/cwd_guard.rsdeletionsin #494.
Changes
src/manifest/workspace.rs: addbase: Option<&Path>toresolve_absolute_workspace_rootandopen_manifest_workspace; keep theenv::current_dir()fallback forNoneand the absolute-parent fast pathunchanged. A relative base is anchored at the working directory before
joining, so
ManifestWorkspace::rootstays absolute.src/manifest/query.rs: passNoneat the soleopen_manifest_workspacecall.src/manifest/tests/workspace.rs: migrate the CWD-dependent tests onto thebase seam / absolute paths; delete
CurrentDirGuardand theEnvLockimport.Add coverage that a relative base (
Some(Path::new("."))) yields an absoluteroot.
src/manifest/tests/workspace_property.rs: property tests over generatedrelative and absolute parents and optional bases, pinning absolute-parent
precedence, verbatim base anchoring, and the always-absolute guarantee for
relative parents.
docs/developers-guide.md: document the workspace base seam — ownership,permitted call sites, and composition rules — under "Environment and template
ports".
Acceptance criteria
std::env::set_var/remove_varcall remains undertests/outsideCommand::envusage. Verified: zero matches undertests/.EnvLock. Verified: the only remainingEnvLockusers aretests/bdd/andtests/manifest_glob_tests/capability_scope.rs, both tracked by Migrate rstest-bdd scenarios off in-process environment and CWD mutation #492/Retire EnvLock and the env mutation guards from test_support #494and out of scope for this ticket.
make check-fmt,make lint, andmake testall pass locally.Validation
make check-fmt— passmake lint(rustdoc + clippy + Whitaker,-D warnings) — passmake test(cargo-nextest workspace + doctests) — passReview follow-up
Code-review findings from the first pass were verified and resolved as follows:
Some(base)was joined verbatim, which could yield a relativeManifestWorkspace::root, violating its documented absolute-path contract.Fixed by anchoring a relative base at
env::current_dir()before joining,preserving absolute bases and the
Noneerror context. AddedSome(Path::new("."))coverage asserting the root is absolute.relative/absolute parents and optional bases asserting base anchoring,
absolute-parent precedence, and the always-absolute guarantee.
docs/developers-guide.md(ownership, permitted call sites, compositionrules, relation to ADR-008).
tests/env_path_tests.rs: INVALID /STALE — the file already uses the pure
prepend_path_value+CommandEnvseam and references
EnvLockonly in a doc comment; no edit was needed.References
https://lody.ai/leynos/sessions/0c8c5e67-f5fa-4ebd-a01c-3ca4143a1924