coq/opam
Jan 2025 – Mar 2026
4 Months active
Languages Used
OcamlShellOCaml
Technical Skills
Build SystemsFormal VerificationPackage ManagementCoqRepository ManagementSoftware Release
Andrew Appel
PROFILE
Andrew Appel
Worked on the coq/opam repository to deliver four feature updates focused on formal verification tooling and package management. Over four months, maintained and enhanced the Verified Software Toolchain (VST) ecosystem by releasing new versions, aligning dependencies, and ensuring compatibility with evolving Coq and CompCert versions. Leveraged OCaml, Shell scripting, and build systems expertise to update opam package definitions, manage version control, and streamline dependency resolution. The work improved build reliability, reduced maintenance overhead, and enabled smoother CI and downstream adoption. Emphasis was placed on reproducible builds, metadata accuracy, and robust support for users upgrading within the Coq ecosystem.
Overall Statistics
Feature vs Bugs
100%Features
Repository Contributions
8Total
Bugs
0
Commits
8
Features
4
Lines of code
350
Activity Months4
Your Network
147 peopleWork History
March 2026
1 Commits • 1 Features
Mar 1, 2026March 2026 monthly summary for coq/opam focusing on business value and technical achievements. Key feature delivered: Opam compatibility update for Coq-VST to support coq-compcert.3.17, enabling smoother adoption with newer dependency versions. Major bugs fixed: none reported for this period. Overall impact: aligns opam metadata with current dependency ecosystem, reducing build failures and improving CI reliability, thereby accelerating downstream adoption and maintenance efficiency. Technologies/skills demonstrated: opam packaging updates, dependency compatibility testing, and version pinning considerations (notably IGNORECOMPCERTVERSION) to improve resilience.
1 Commits • 1 Features
Mar 1, 2026March 2026 monthly summary for coq/opam focusing on business value and technical achievements. Key feature delivered: Opam compatibility update for Coq-VST to support coq-compcert.3.17, enabling smoother adoption with newer dependency versions. Major bugs fixed: none reported for this period. Overall impact: aligns opam metadata with current dependency ecosystem, reducing build failures and improving CI reliability, thereby accelerating downstream adoption and maintenance efficiency. Technologies/skills demonstrated: opam packaging updates, dependency compatibility testing, and version pinning considerations (notably IGNORECOMPCERTVERSION) to improve resilience.
March 2026
November 2025
2 Commits • 1 Features
Nov 1, 2025November 2025 — coq/opam: Achieved cross-component Rocq 9 compatibility and release-date alignment for the Coq VST ecosystem. Implemented Rocq 9 compatibility across coq-vst, coq-vst-lib, coq-vcfloat, and coq-vst-zlist; introduced a new coq-vst version to improve toolchain reliability; corrected release date metadata for coq-vst.2.16 to reflect Nov 13, 2025. Result: more stable toolchains, reproducible builds, and smoother CI across the Coq ecosystem.
November 2025
2 Commits • 1 Features
Nov 1, 2025November 2025 — coq/opam: Achieved cross-component Rocq 9 compatibility and release-date alignment for the Coq VST ecosystem. Implemented Rocq 9 compatibility across coq-vst, coq-vst-lib, coq-vcfloat, and coq-vst-zlist; introduced a new coq-vst version to improve toolchain reliability; corrected release date metadata for coq-vst.2.16 to reflect Nov 13, 2025. Result: more stable toolchains, reproducible builds, and smoother CI across the Coq ecosystem.
February 2025
4 Commits • 1 Features
Feb 1, 2025February 2025 monthly summary for coq/opam: Implemented targeted packaging updates to improve build reliability and future maintenance. Key changes include upgrading Coq library versions, updating package checksums, renaming versioned directories, and removing obsolete package definitions to simplify maintenance and reduce build failures. Resulting work aligns packaging with updated opam conventions and supports smoother downstream deployments.
4 Commits • 1 Features
Feb 1, 2025February 2025 monthly summary for coq/opam: Implemented targeted packaging updates to improve build reliability and future maintenance. Key changes include upgrading Coq library versions, updating package checksums, renaming versioned directories, and removing obsolete package definitions to simplify maintenance and reduce build failures. Resulting work aligns packaging with updated opam conventions and supports smoother downstream deployments.
February 2025
January 2025
1 Commits • 1 Features
Jan 1, 2025Month 2025-01 monthly summary focusing on delivering the VST 2.15 release and opam packaging updates for the coq/opam repository, including dependency alignment and Coq compatibility improvements. This work enhances tooling stability, simplifies upgrades for users, and strengthens the ecosystem around VST 2.15.
January 2025
1 Commits • 1 Features
Jan 1, 2025Month 2025-01 monthly summary focusing on delivering the VST 2.15 release and opam packaging updates for the coq/opam repository, including dependency alignment and Coq compatibility improvements. This work enhances tooling stability, simplifies upgrades for users, and strengthens the ecosystem around VST 2.15.
Activity
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Quality Metrics
Correctness100.0%
Maintainability97.6%
Architecture100.0%
Performance97.6%
AI Usage20.0%
Skills & Technologies
Programming Languages
OCamlOcamlShell
Technical Skills
Build SystemsCoqFormal VerificationPackage ManagementRepository ManagementSoftware Releasebuild systemsdependency managementdependency resolutionformal verificationpackage managementversion control
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