Instead of failing with 409 on version conflicts, use "first version wins"
strategy. This allows resolution to succeed for complex dependency trees
like tensorflow where transitive dependencies may have overlapping but
not identical version requirements.
The resolver now:
- Checks if an already-resolved version satisfies a new constraint
- If yes, reuses the existing version
- If no, logs the mismatch and uses the first-encountered version
This matches pip's behavior of picking a working version rather than
failing on theoretical conflicts.
When packages like pytest have extras (e.g., pytest[testing]) that depend
on the base package, the resolution was incorrectly detecting this as a
circular dependency.
Added additional check to skip dependencies that resolve to an artifact
already in the visiting set, preventing the false cycle detection while
still catching real circular dependencies.
When auto_fetch=true and the root artifact doesn't exist locally in a
system project (_pypi), now attempts to fetch it from upstream before
starting dependency resolution. Also fixed a bug where fetched_artifacts
was being redeclared, which would lose the root artifact from the list.
- Fix upload response to return actual version (not requested version)
when artifact already has a version in the package
- Update ref_count tests to use multiple packages (one version per
artifact per package design constraint)
- Remove allow_public_internet references from upstream caching tests
- Update consistency check test to not assert global system health
- Add versions field to artifact schemas
- Fix dependencies resolution to handle removed tag constraint
Tags were mutable aliases that caused confusion alongside the immutable
version system. This removes tags entirely, keeping only PackageVersion
for artifact references.
Changes:
- Remove tags and tag_history tables (migration 012)
- Remove Tag model, TagRepository, and 6 tag API endpoints
- Update cache system to create versions instead of tags
- Update frontend to display versions instead of tags
- Remove tag-related schemas and types
- Update artifact cleanup service for version-based ref_count
The circular dependency error '_pypi/psutil → _pypi/psutil' occurred because
dependencies with extras like 'psutil[test]' weren't being recognized as
self-dependencies. The comparison 'psutil[test] != psutil' failed.
- Add _normalize_pypi_package_name() helper that strips extras brackets
and normalizes separators per PEP 503
- Update _detect_package_cycle to use normalized names for cycle detection
- Update check_circular_dependencies to use normalized initial path
- Simplify self-dependency check in resolve_dependencies to use helper
- Add artifact: prefix handling in resolve_dependencies for direct artifact
ID references, enabling dependency resolution for tagless artifacts
- Refactor PackagePage from tag-based to artifact-based data display
- Add PackageArtifact type with tags array for artifact-centric API responses
- Update download URLs to use artifact:ID prefix when no tags exist
- Conditionally show "View Ensure File" only when artifact has tags
- Add artifact-level self-dependency check (skip if dep resolves to same artifact)
- Close dependency graph modal if package has no dependencies to show
(only root package with no children and no missing deps)
PyPI packages can have self-referential dependencies for extras
(e.g., pytest[testing] depends on pytest). These were incorrectly
detected as circular dependencies. Now we skip them.
When dependencies are not cached on the server (common since we removed
proactive caching), the dependency graph now:
- Continues resolving what it can find
- Shows missing dependencies in a separate section with amber styling
- Displays the constraint and which package required them
- Updates the header stats to show "X cached • Y not cached"
This provides a better user experience than showing an error when
some dependencies haven't been downloaded yet.
When a dependency has an invalid version constraint like '>=' (without
a version number), the resolver now treats it as a wildcard and returns
the latest available version instead of failing with 'Dependency not found'.
This handles malformed metadata that may have been stored from PyPI packages.
- Deduplicate dependencies by package name before inserting
- Some packages (like anyio) list the same dep (trio) multiple times with
different version constraints for different extras
- The unique constraint on (artifact_id, project, package) rejected these
- Also removed debug logging from dependencies.py
- Parse version constraints like >=1.9, <2.0 using packaging library
- Find the latest version that satisfies the constraint
- Support wildcard (*) to get latest version
- Fall back to exact version and tag matching
