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Auto-detect global sidecarDir default for opencode-lossless - #14
Default sidecar dir is now global auto-detected; explicit sidecarDir still wins. Adds startup legacy-dir warn and diagnose source line, plus docs and patch changeset.
packages/opencode/src/{default-sidecar-dir.ts,plugin.ts,lifecycle.ts}
packages/opencode/test/{default-sidecar-dir.test.ts,lifecycle.test.ts}
packages/opencode/{README.md,skills/opencode-lossless/SKILL.md}
apps/docs/content/_snippets/.../opencode*.mdx + seo faqs
.changeset/*.md
Evidence
Before: default ./.lossless scatters one dir per cwd; 872-test baseline.
After: global auto-detect with source in diagnose; 872 tests green, full CI green.
Merge Danger
Door: two-way. Old behavior pinnable with one explicit line: sidecarDir: "./.lossless".
Blast Radius: every default install now shares one dir; gc residual risk documented with reopen triggers (cross-process locking deferred).
Summary by CodeRabbit
New Features
Sidecars now default to a shared, automatically detected location, with platform-specific paths. You can still configure ./.lossless for project-local storage.
If existing sidecars are found in the previous location, a startup warning identifies both paths. Sidecars are not moved automatically; use /lossless-migrate once per affected project.
Diagnostic output now identifies the sidecar directory and its source.
Documentation
Updated setup, configuration, troubleshooting, and command guides to explain storage locations, migration, and cleanup.
Confidence Score: 5/5
The PR appears safe to merge with the documented cleanup limits.
Summary
OpenCode sidecars now default to a shared directory chosen from environment settings and the user's home directory. An explicit sidecarDir still wins.
OpenCode stores sidecars in a shared location chosen for the machine.
/lossless-gc checks recent activity before removing sidecars.
Diagnostics name the active sidecar directory and where it came from.
Documentation and comments use clearer wording without changing their behavior.
No new actionable issues were found since the previous review. SutuSebastian deferred cross-process locking after adding the cleanup guards, export-before-delete, and documented conditions for revisiting that decision.
Resolver auto-detects the global OpenCode data dir; explicit sidecarDir wins.
Adds startup warn line and diagnose line; docs sweep plus patch changeset.
The OpenCode plugin now uses an auto-detected global sidecar directory when sidecarDir is blank or unset. It reports the selected directory and source, warns about files in the legacy directory when applicable, and includes the directory and source in diagnose output. Documentation describes the defaults and migration command.
Changes: OpenCode sidecar directory
Layer / File(s)
Summary
Directory resolution and option handling packages/opencode/src/default-sidecar-dir.ts, packages/opencode/src/plugin.ts, packages/opencode/test/default-sidecar-dir.test.ts
The resolver selects an absolute XDG_DATA_HOME first, then platform-specific locations based on the home directory. It uses ./.lossless if no home resolves. Explicit sidecarDir values remain supported, and tests cover the platform selections and option handling.
Startup reporting and diagnostics packages/opencode/src/plugin.ts, packages/opencode/src/lifecycle.ts, packages/opencode/test/lifecycle.test.ts
The plugin logs the selected directory and source, and warns if the legacy directory contains files and differs from the selection. Lifecycle diagnostics prefix the output with the directory and source.
Default-path and migration guidance .changeset/*, apps/docs/components/seo/*, apps/docs/content/_snippets/guides/*, apps/docs/content/_snippets/reference/*, packages/opencode/README.md, packages/opencode/skills/opencode-lossless/SKILL.md
The documentation describes the global default, project-local sidecars, /lossless-migrate, and the fact that the plugin does not move sidecars. It also clarifies several command and configuration descriptions.
sequenceDiagram
participant setupOpencodeLossless
participant readSidecarDir
participant defaultSidecarDir
participant legacyFilesystem
participant lifecycleDiagnose
participant diagnosticsBundle
setupOpencodeLossless->>readSidecarDir: resolve configured sidecarDir
readSidecarDir->>defaultSidecarDir: resolve when the configured value is blank or unset
defaultSidecarDir-->>readSidecarDir: return directory and source
readSidecarDir-->>setupOpencodeLossless: return directory and source
setupOpencodeLossless->>legacyFilesystem: inspect legacy fallback directory when applicable
setupOpencodeLossless->>lifecycleDiagnose: pass sidecarSource
lifecycleDiagnose->>diagnosticsBundle: prefix directory and source
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Possibly related PRs
stainless-code/lossless#12: Adds OpenCode sidecar dump and integrity-diagnose behavior that uses the sidecar directory resolved by this change.
Suggested labels:enhancement, documentation
Merge Risk: Moderate · previous review 4e66c
Upgrading projects that stored sidecars in ./.lossless will not see their old history under the new global default, and the documented fix (/lossless-migrate) does not relocate them. Correct the upgrade guidance to say to keep sidecarDir set to "./.lossless", or describe a real relocation step, before merging.
Pre-merge checks: 4 · 1
Failed checks: 1 warning
Check name
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Explanation
Resolution
Docstring Coverage
Docstring coverage is 4.55% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Documentation-only edits and deletions within survi…
Write docstrings for the functions missing them to satisfy the coverage threshold.
Passed checks: 4 passed
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Explanation
Description Check
Check skipped - CodeRabbit’s high-level summary is enabled.
Title check
The title clearly and concisely describes the primary change: automatic detection of a global default for sidecarDir in opencode-lossless.
Linked Issues check
Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check
Check skipped because no linked issues were found for this pull request.
Full details: Docstring Coverage
Explanation
Docstring coverage is 4.55% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Documentation-only edits and deletions within surviving functions are included; unchanged diff context and fully deleted functions are excluded. Analyzed 22 functions across 7 files. (7 skipped: 7 unsupported.)
Resolution
Write docstrings for the functions missing them to satisfy the coverage threshold.
Finishing Touches: 💡 1
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Actionable comments posted: 2
🪄 Fix comments: Fix CodeRabbit comments on this PR
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Inline comments:
Review comments at
@apps/docs/content/_snippets/guides/configuration/opencode.mdx:
- Line 37: Update the migration guidance in the opencode configuration snippet
to tell users to retain sidecarDir set to "./.lossless" to keep using existing
history; clarify that /lossless-migrate upgrades schemas only in the selected
directory, defaults to dry-run, and does not move sidecars.
Review comments at @packages/opencode/src/default-sidecar-dir.ts:
- Around line 33-34: Update isAbsoluteAny to validate paths using the active
platform’s absolute-path rules, so Windows-style paths are not accepted as
absolute on POSIX. Add a cross-platform test covering this behavior.
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SutuSebastian
added
enhancement
Summary
Default sidecar dir is now global auto-detected; explicit
sidecarDirstill wins. Adds startup legacy-dir warn and diagnose source line, plus docs and patch changeset.Changed areas:
Evidence
Before: default
./.losslessscatters one dir per cwd; 872-test baseline.After: global auto-detect with source in diagnose; 872 tests green, full CI green.
Merge Danger
Door: two-way. Old behavior pinnable with one explicit line:
sidecarDir: "./.lossless".Blast Radius: every default install now shares one dir; gc residual risk documented with reopen triggers (cross-process locking deferred).
Summary by CodeRabbit
New Features
./.losslessfor project-local storage./lossless-migrateonce per affected project.Documentation
The PR appears safe to merge with the documented cleanup limits.Summary
OpenCode sidecars now default to a shared directory chosen from environment settings and the user's home directory. An explicit
sidecarDirstill wins./lossless-gcchecks recent activity before removing sidecars.No new actionable issues were found since the previous review.
SutuSebastiandeferred cross-process locking after adding the cleanup guards, export-before-delete, and documented conditions for revisiting that decision.Reviews (6) · Last reviewed commit: "Add gc verdict additions: skipped metric..." · Reviewed by Greptile