haskell/haskell-language-server
Feb 2026 – Mar 2026
2 Months active
Languages Used
Haskell
Technical Skills
HaskellSoftware DevelopmentTestingError HandlingIDE Plugin DevelopmentPlugin Development
Jatin Kumar
PROFILE
Jatin Kumar
During a two-month period, Herora Oshab contributed to the haskell/haskell-language-server repository by implementing level-aware module graph edges to align with GHC 9.14+ import semantics, improving module dependency resolution and test reliability. Using Haskell and focusing on error handling and plugin development, Herora addressed GHC-specific panics and stabilized the test suite through deduplication and regression testing. In addition, Herora enhanced error reporting for external formatters like Fourmolu and Ormolu, ensuring parse errors surfaced clearly in IDE notifications. The work also included refining IDE code actions, particularly by correcting argument suggestions for qualified names, demonstrating careful attention to long-term maintainability.
Overall Statistics
Feature vs Bugs
67%Features
Repository Contributions
3Total
Bugs
1
Commits
3
Features
2
Lines of code
291
Activity Months2
Work History
March 2026
2 Commits • 1 Features
Mar 1, 2026March 2026: Delivered targeted reliability and UX improvements in haskell-language-server with a dual focus on external formatter error handling and IDE code-action accuracy. Implementations include enhanced error reporting for external Fourmolu/Ormolu formatters and a fix to the IDE's Add Argument suggestion for qualified Haskell names, accompanied by regression tests and test refinements to ensure long-term correctness.
2 Commits • 1 Features
Mar 1, 2026March 2026: Delivered targeted reliability and UX improvements in haskell-language-server with a dual focus on external formatter error handling and IDE code-action accuracy. Implementations include enhanced error reporting for external Fourmolu/Ormolu formatters and a fix to the IDE's Add Argument suggestion for qualified Haskell names, accompanied by regression tests and test refinements to ensure long-term correctness.
March 2026
February 2026
1 Commits • 1 Features
Feb 1, 2026February 2026 — haskell/haskell-language-server Key deliverables: - Level-aware module graph edges for GHC 9.14+: Implemented level-aware module graph edges to align with GHC 9.14+ import semantics. This enhances correctness of module dependency resolution and stabilizes the test suite. The change includes deduplicated edge construction and regression tests. Also updated imports to fix GHC-specific issues (GenWithIsBoot from GHC.Unit.Types instead of GHC.Types.Basic). Major bugs fixed: - Fixed GHC 9.14.1 panics related to module graph construction and import handling. - Reduced test noise and flakiness by correcting import paths and hardening test-suite reliability (notably THTests diagnostics). Overall impact and accomplishments: - Improved reliability and developer experience when using HLS with GHC 9.14+, enabling faster iteration and fewer flaky test runs. - Strengthened long-term compatibility with upcoming GHC changes, reducing maintenance burden for CI and contributors. Technologies/skills demonstrated: - Haskell, GHC 9.14+ API usage, module graph modeling - Regression testing, test-suite hardening, and import management - Code quality improvements through deduplication and targeted fixes to improve reliability
February 2026
1 Commits • 1 Features
Feb 1, 2026February 2026 — haskell/haskell-language-server Key deliverables: - Level-aware module graph edges for GHC 9.14+: Implemented level-aware module graph edges to align with GHC 9.14+ import semantics. This enhances correctness of module dependency resolution and stabilizes the test suite. The change includes deduplicated edge construction and regression tests. Also updated imports to fix GHC-specific issues (GenWithIsBoot from GHC.Unit.Types instead of GHC.Types.Basic). Major bugs fixed: - Fixed GHC 9.14.1 panics related to module graph construction and import handling. - Reduced test noise and flakiness by correcting import paths and hardening test-suite reliability (notably THTests diagnostics). Overall impact and accomplishments: - Improved reliability and developer experience when using HLS with GHC 9.14+, enabling faster iteration and fewer flaky test runs. - Strengthened long-term compatibility with upcoming GHC changes, reducing maintenance burden for CI and contributors. Technologies/skills demonstrated: - Haskell, GHC 9.14+ API usage, module graph modeling - Regression testing, test-suite hardening, and import management - Code quality improvements through deduplication and targeted fixes to improve reliability
Activity
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Quality Metrics
Correctness93.4%
Maintainability80.0%
Architecture80.0%
Performance80.0%
AI Usage26.6%
Skills & Technologies
Programming Languages
Haskell
Technical Skills
Error HandlingHaskellIDE Plugin DevelopmentPlugin DevelopmentRefactoringSoftware DevelopmentTestingUnit Testing
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