
Gaetan Gilbert engineered and maintained build and packaging workflows for the coq/opam repository, focusing on stability, portability, and modernization across the Rocq Prover ecosystem. He implemented relocatable builds, standardized opam metadata, and aligned dependencies to support evolving Coq and Rocq components, using technologies such as Make, Shell scripting, and OCaml. Gaetan addressed build reproducibility and CI reliability by refining configuration hygiene, decoupling dependencies, and introducing compatibility layers. His work included formal verification support and proof engineering, ensuring seamless onboarding and maintainability. The depth of his contributions is reflected in robust, reproducible development environments and streamlined release processes.

In 2025-10, delivered targeted improvements in coq/opam to boost build portability and stability. Implemented relocatable builds for rocq-runtime.dev and added a dependency safeguard to pin Menhir for coq-compcert.dev, reducing breakages across environments and CI.
In 2025-10, delivered targeted improvements in coq/opam to boost build portability and stability. Implemented relocatable builds for rocq-runtime.dev and added a dependency safeguard to pin Menhir for coq-compcert.dev, reducing breakages across environments and CI.
Monthly summary for 2025-09 focusing on coq/opam work: Key feature delivered: Build Configuration Cleanup removing the defunct '-mandir' option from rocq-runtime.dev opam. No major bugs fixed this month. Impact: Simplified build configuration, reduced future maintenance, and alignment with dune-based workflow, improving pipeline reliability and contributor onboarding. Technologies/skills demonstrated: opam configuration hygiene, dune migration alignment, commit hygiene, repository maintenance.
Monthly summary for 2025-09 focusing on coq/opam work: Key feature delivered: Build Configuration Cleanup removing the defunct '-mandir' option from rocq-runtime.dev opam. No major bugs fixed this month. Impact: Simplified build configuration, reduced future maintenance, and alignment with dune-based workflow, improving pipeline reliability and contributor onboarding. Technologies/skills demonstrated: opam configuration hygiene, dune migration alignment, commit hygiene, repository maintenance.
Month: 2025-07 — Focused on Opam packaging standardization and dependency updates across rocq-* packages in coq/opam. Completed cross-package metadata consolidation, removed dev-version fields, and updated constraints to improve compatibility and packaging reliability. Notable commits include removing dune 3.14 upper bound, removing version fields from 9.1.dev packages, updating rocq-elpi.dev, and removing rocq-prover dep.
Month: 2025-07 — Focused on Opam packaging standardization and dependency updates across rocq-* packages in coq/opam. Completed cross-package metadata consolidation, removed dev-version fields, and updated constraints to improve compatibility and packaging reliability. Notable commits include removing dune 3.14 upper bound, removing version fields from 9.1.dev packages, updating rocq-elpi.dev, and removing rocq-prover dep.
In June 2025, Rocq Prover packaging work in the coq/opam repository focused on release readiness and rename compatibility for the 9.1.dev cycle. Packaging definitions and configurations were added for core components (coq-core, coqide-server, rocq-core, rocq-devtools, rocq-prover, rocq-runtime) and aligned with the renaming from Coq to Rocq Prover. No major bug fixes were required this month; activity centered on packaging stability, release automation groundwork, and ecosystem alignment.
In June 2025, Rocq Prover packaging work in the coq/opam repository focused on release readiness and rename compatibility for the 9.1.dev cycle. Packaging definitions and configurations were added for core components (coq-core, coqide-server, rocq-core, rocq-devtools, rocq-prover, rocq-runtime) and aligned with the renaming from Coq to Rocq Prover. No major bug fixes were required this month; activity centered on packaging stability, release automation groundwork, and ecosystem alignment.
May 2025 monthly summary for coq/opam: Focused on stabilizing and modernizing opam packaging for the Coq-metacoq integration within the coq/opam repository. Delivered packaging modernization that standardizes opam metadata to prevent spurious recompilations and introduced a compatibility layer for Coq-metacoq development definitions by replacing dependencies with rocq-metarocq packages and removing build/install sections. This work improves build reproducibility, reduces CI noise, and simplifies downstream maintenance. No major bugs fixed this month; the emphasis was on groundwork and stability to enable smoother future releases.
May 2025 monthly summary for coq/opam: Focused on stabilizing and modernizing opam packaging for the Coq-metacoq integration within the coq/opam repository. Delivered packaging modernization that standardizes opam metadata to prevent spurious recompilations and introduced a compatibility layer for Coq-metacoq development definitions by replacing dependencies with rocq-metarocq packages and removing build/install sections. This work improves build reproducibility, reduces CI noise, and simplifies downstream maintenance. No major bugs fixed this month; the emphasis was on groundwork and stability to enable smoother future releases.
In April 2025, delivered targeted improvements across coq/opam and perennial to stabilize development tooling and improve cross-repo compatibility. Key outcomes include decoupling development tooling from rocq-prover, cleaning up packaging, updating OCaml tooling requirements, and encapsulating solve_unsafe in SetSolveUnsafe with an adapted Ltac2 solver, aligning with upstream rocq-prover changes. These changes reduce maintenance burden, speed onboarding, and enable faster iteration on core verification tooling.
In April 2025, delivered targeted improvements across coq/opam and perennial to stabilize development tooling and improve cross-repo compatibility. Key outcomes include decoupling development tooling from rocq-prover, cleaning up packaging, updating OCaml tooling requirements, and encapsulating solve_unsafe in SetSolveUnsafe with an adapted Ltac2 solver, aligning with upstream rocq-prover changes. These changes reduce maintenance burden, speed onboarding, and enable faster iteration on core verification tooling.
February 2025 monthly summary for coq/opam focusing on build workflow improvements and dependency alignment to support benchmarking-ready rocq-stdlib.dev and stable dev environments. Implemented a makefile-based build path and ensured proper packaging and install steps, alongside aligning opam dependencies for correct linking.
February 2025 monthly summary for coq/opam focusing on build workflow improvements and dependency alignment to support benchmarking-ready rocq-stdlib.dev and stable dev environments. Implemented a makefile-based build path and ensured proper packaging and install steps, alongside aligning opam dependencies for correct linking.
January 2025 monthly summary: Focused on improving build reliability for coq/opam. No new features released. Major bug fix implemented to derive the package name from the opam file instead of hardcoding 'rocq', preventing mismatches during builds. Commit 1a8c982aa6fcb27da0b1feba64651e10726ffd19. Impact: more reliable CI, easier maintenance, and alignment with opam metadata. Technologies/skills: opam metadata, build script improvements, scripting discipline, and packaging integrity.
January 2025 monthly summary: Focused on improving build reliability for coq/opam. No new features released. Major bug fix implemented to derive the package name from the opam file instead of hardcoding 'rocq', preventing mismatches during builds. Commit 1a8c982aa6fcb27da0b1feba64651e10726ffd19. Impact: more reliable CI, easier maintenance, and alignment with opam metadata. Technologies/skills: opam metadata, build script improvements, scripting discipline, and packaging integrity.
Concise monthly summary for 2024-12 focusing on business value and technical achievements for coq/opam.
Concise monthly summary for 2024-12 focusing on business value and technical achievements for coq/opam.
November 2024: Stabilized the opam-based Coq development workflow by delivering a critical build environment configuration fix to COQ_SPLIT=1 for the coq/opam repository. The change ensures the dunestrap build and development environment can be built reliably after upstream Coq changes, reducing local dev and CI failures and maintaining engineering velocity.
November 2024: Stabilized the opam-based Coq development workflow by delivering a critical build environment configuration fix to COQ_SPLIT=1 for the coq/opam repository. The change ensures the dunestrap build and development environment can be built reliably after upstream Coq changes, reducing local dev and CI failures and maintaining engineering velocity.
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