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Reynald Affeldt

PROFILE

Reynald Affeldt

Reynald Affeldt engineered and maintained packaging, release, and dependency management for mathematical and robotics libraries in the coq/opam repository, focusing on MathComp-Analysis, Infotheo, and Robot Rocq. He delivered reproducible builds and streamlined downstream integration by refining opam metadata, aligning dependency constraints, and automating release workflows. Using OCaml, Nix, and formal verification tools, Reynald addressed compatibility issues, improved build reliability, and enabled broader adoption of formal methods in Coq. His work demonstrated depth in release engineering and package management, ensuring that complex mathematical components and robotics models could be reliably distributed and integrated across the OCaml/Coq ecosystem.

Overall Statistics

Feature vs Bugs

90%Features

Repository Contributions

43Total
Bugs
3
Commits
43
Features
28
Lines of code
4,544
Activity Months13

Your Network

600 people

Same Organization

@aist.go.jp
2
Bagus Tris AtmajaMember
Yoshihiro ImaiMember

Shared Repositories

598

Work History

March 2026

4 Commits • 3 Features

Mar 1, 2026

March 2026: Delivered major feature releases across coq/opam that strengthen information theory tooling, robotics modeling foundations, and Coq ecosystem compatibility, while stabilizing upgrades for MathComp-Analysis. These efforts enable richer analytics, formal robotics reasoning, and smoother user transitions, driving business value through improved capabilities and reduced upgrade friction.

January 2026

3 Commits • 2 Features

Jan 1, 2026

January 2026 performance summary for the coq/opam repository. Delivered two major ecosystem releases with packaging improvements and enhanced mathematical libraries, improving distribution reliability and enabling advanced formal work for users. Key outcomes: - Robot Rocq 0.3.1 release with a new OPAM package for formal foundations in modeling robot manipulators using Rocq, plus updated OPAM metadata (release URL and checksum) to ensure package integrity.

November 2025

3 Commits • 3 Features

Nov 1, 2025

November 2025 monthly summary for coq/opam: delivered three library releases strengthening Real Analysis, Information Theory, and Robotics modeling within the Coq ecosystem; introduced packaging enhancements to improve reproducibility and onboarding; overall impact: expanded capabilities, streamlined integration, and stronger foundation for downstream projects.

September 2025

1 Commits • 1 Features

Sep 1, 2025

September 2025 — Monthly summary for coq/opam: Delivered Opam packaging for Infotheo library 0.9.5. Implemented a complete opam package definition with metadata (maintainer, homepage, license, synopsis), dependencies, and build/install instructions, plus a defined source URL and checksum to enable reproducible builds and reliable installations. Release details captured in commit a93e54759a9b621346afc98d1776a2ed8676fb27. No major bugs reported this month. This work improves upgrade paths, reduces install friction, and strengthens release discipline across the OCaml/OPAM ecosystem.

August 2025

2 Commits • 2 Features

Aug 1, 2025

In August 2025, packaging and release automation in the coq/opam repository delivered two official opam-packaged releases, strengthening build reproducibility and downstream integration within the Coq ecosystem.

July 2025

4 Commits • 1 Features

Jul 1, 2025

In 2025-07, delivered end-to-end packaging and releases for Coq libraries in the opam repository, enabling downstream distribution and ecosystem compatibility. Specifically, released MathComp-Analysis 1.12.0 with new package definitions; coq-infotheo 0.9.4 release with opam metadata; dependency constraint alignment for coq-infotheo; and coq-monae 0.9.1 release. Implemented a critical fix for Infotheo 0.9.3 to restore stability. These changes improve build reproducibility, reduce dependency conflicts, and broaden the ecosystem's distribution readiness.

May 2025

5 Commits • 3 Features

May 1, 2025

May 2025 — Release engineering and dependency management for the coq/opam repository. Delivered three major releases and compatibility updates to enable MathComp 2.4.0 adoption, improved packaging metadata, and reduced downstream risk. Key outcomes include: (1) MathComp-Analysis 1.11.0 Release with new package definitions for analysis, classical logic, and real-number libraries, including dependencies and metadata; (2) Opam compatibility updates lifting upper bounds for coq-mathcomp-ssreflect to support MathComp 2.4.0, enabling newer versions for zify and algebra-tactics (commits: zify with 2.4.0; algebra-tactics compatible; note on lra incompatibility); (3) Infotheo 0.9.3 Packaging Release with updated opam metadata, dependencies, and source URL. These changes reduce build-time failures, accelerate downstream adoption, and demonstrate strong tooling in opam metadata, release commits, and ecosystem compatibility.

April 2025

3 Commits • 3 Features

Apr 1, 2025

April 2025 (2025-04) monthly summary for the coq/opam repository. Focused release engineering and packaging improvements across MathComp and Infotheo components, driving distribution readiness and reduced maintenance overhead. No critical defects were observed; the month emphasized feature delivery, dependency simplification, and packaging metadata to streamline downstream usage.

February 2025

6 Commits • 2 Features

Feb 1, 2025

Month: 2025-02 — concise monthly summary focusing on packaging improvements for Coq/opam and Nixpkgs, improved dependencies, and cross-repo collaboration. Delivered new opam packaging for Infotheo, MathComp-Analysis, and coq-monae; upgraded Nixpkgs mathcomp components; fixed packaging edge-case bug. Result: faster, more reliable installations; reproducible builds; improved downstream developer experience.

January 2025

1 Commits • 1 Features

Jan 1, 2025

January 2025: Focused on packaging and release readiness for coq-monae 0.7.2 via opam to enable distribution, reproducible builds, and clear library documentation.

December 2024

4 Commits • 2 Features

Dec 1, 2024

December 2024 monthly summary for coq/opam: Delivered major releases with updated opam metadata across the MathComp-Analysis and Infotheo packages, plus a critical dependency constraint fix to ensure compatibility with current releases. These efforts improve install reliability, reproducibility, and cross-package compatibility for Coq users.

November 2024

4 Commits • 2 Features

Nov 1, 2024

November 2024 performance summary for coq/opam: delivered critical release and packaging improvements to stabilize the Coq ecosystem. Key features include MathComp-Analysis 1.7.0 and coq-infotheo 0.7.5 releases with updated opam metadata and dependencies. Major fixes addressed source integrity and opam constraint issues across MathComp packages, reducing build failures and improving reproducibility for downstream projects. The work strengthens ecosystem stability, supports ongoing research initiatives, and demonstrates solid release engineering and automation readiness.

October 2024

3 Commits • 3 Features

Oct 1, 2024

October 2024 — Release-focused month for the coq/opam repository, delivering three key packaging updates with strong emphasis on reproducible builds and dependency integrity. No critical defects reported; focus was on packaging quality, release engineering, and enabling downstream developers with reliable metadata and build instructions.

Activity

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Quality Metrics

Correctness98.2%
Maintainability99.0%
Architecture97.6%
Performance97.2%
AI Usage20.0%

Skills & Technologies

Programming Languages

NixOCamlOcamlopam

Technical Skills

Build SystemsCoqDependency ManagementDevOpsFormal MethodsFormal VerificationMathematicsNixOCaml EcosystemPackage ManagementProof AssistantRelease EngineeringRelease Managementdependency resolutionformal methods

Repositories Contributed To

2 repos

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

coq/opam

Oct 2024 Mar 2026
13 Months active

Languages Used

OCamlOcamlopam

Technical Skills

OCaml EcosystemPackage ManagementRelease EngineeringCoqRelease Managementpackage management

Saghen/nixpkgs

Feb 2025 Feb 2025
1 Month active

Languages Used

Nix

Technical Skills

NixPackage Management