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Chris Hathhorn

PROFILE

Chris Hathhorn

Over four months, contributed to GaloisInc/saw-script and GaloisInc/cryptol by building and refining formal verification tooling, focusing on Coq and Rocq integration, REPL enhancements, and robust JSON parsing for hardware workflows. Applied Haskell and Rust to expand test frameworks, improve output handling, and unify version reporting, while strengthening CI pipelines and code maintainability. Enhanced documentation and onboarding by correcting Cryptol’s BasicSyntax references and clarifying operator usage. Prioritized code quality through systematic refactoring, import reorganization, and deprecation of outdated commands, ensuring long-term reliability. Emphasized reproducibility, user experience, and technical clarity across backend development, functional programming, and formal methods.

Overall Statistics

Feature vs Bugs

74%Features

Repository Contributions

85Total
Bugs
9
Commits
85
Features
26
Lines of code
16,591
Activity Months4

Work History

February 2026

3 Commits

Feb 1, 2026

February 2026: Strengthened Cryptol documentation with targeted BasicSyntax fixes to improve onboarding, reduce support queries, and ensure reference accuracy. Delivered three documentation corrections covering len/len' usage and the not operator, aligning BasicSyntax.rst with implementation semantics. No code changes were required; the focus was on documentation quality and user experience.

January 2026

11 Commits • 3 Features

Jan 1, 2026

January 2026 monthly summary for GaloisInc/saw-script: Delivered user-facing REPL enhancements, hardened Yosys import parsing, and codebase cleanup to improve maintainability and test coverage. This work advances reliability for hardware verification workflows and reduces debugging time for developers.

December 2025

45 Commits • 15 Features

Dec 1, 2025

December 2025 summary: Focused feature delivery and foundational modernization across the saw-script and Rocq-integrated stack, with an emphasis on improved Coq integration, clearer documentation, stronger CI, and a streamlined codebase to support long-term maintainability and reliability.

November 2025

26 Commits • 8 Features

Nov 1, 2025

November 2025 monthly summary focused on stabilizing and expanding capabilities in the saw-script Coq integration and improving cross-repo reliability and test coverage. Key improvements across saw-script and mir-json include output handling flexibility, robust test frameworks, enhanced version reporting, and CI/build tooling. The combined work improves user experience, reduces support overhead, and strengthens reproducibility for verification pipelines.

Activity

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Quality Metrics

Correctness99.0%
Maintainability95.2%
Architecture96.2%
Performance95.2%
AI Usage21.4%

Skills & Technologies

Programming Languages

BashCoqCryptolHaskellJSONMakefileMarkdownNonePythonRST

Technical Skills

AST manipulationBash scriptingCI/CDCode CleanupCommand Line Interface (CLI) DevelopmentCommand parsingCoqCryptolDependency ManagementDevOpsDocumentationFormal VerificationFunctional ProgrammingHaskellJSON handling

Repositories Contributed To

3 repos

Overview of all repositories you've contributed to across your timeline

GaloisInc/saw-script

Nov 2025 Jan 2026
3 Months active

Languages Used

CoqCryptolHaskellMakefileNoneYAMLMarkdownPython

Technical Skills

CI/CDCoqCryptolFormal VerificationFunctional ProgrammingHaskell

GaloisInc/mir-json

Nov 2025 Nov 2025
1 Month active

Languages Used

BashMarkdownRustShell

Technical Skills

Bash scriptingCode CleanupCommand Line Interface (CLI) DevelopmentRustRust programmingShell Scripting

GaloisInc/cryptol

Feb 2026 Feb 2026
1 Month active

Languages Used

RSTreStructuredText

Technical Skills

documentationtechnical writing