The Rocq Prover

Summary of changes

The Rocq Prover version 9.0 is the first Rocq Prover release after the renaming from The Coq Proof Assistant. The Rocq Prover 9.0 command line interface is backwards compatible with Coq 8.20, providing compatibility shims so that developments depending on Coq can be easily ported, see Porting to The Rocq Prover for details. The 9.0 version is based on a new single binary rocq that dispatches commands to previously separate binaries, a split and renaming of the standard library to Stdlib and improvements to the handling of template-polymorphism, bringing it closer to a complete subsumption by sort polymorphism.

We highlight some of the most impactful changes here:

Notable breaking changes:

See the Changes in 9.0.0 section below for the detailed list of changes, including potentially breaking changes marked with Changed. Rocq's reference manual for 9.0, documentation of the 9.0 core and standard libraries, reference manual of the 9.0 standard library and developer documentation of the 9.0 ML API are also available.

Théo Zimmermann, with help from Jason Gross and Gaëtan Gilbert, maintained coqbot used to run Coq's CI and other pull request management tasks.

Jason Gross maintained the bug minimizer and its automatic use through coqbot.

Ali Caglayan, Emilio Jesús Gallego Arias, Rudi Grinberg and Rodolphe Lepigre maintained the Dune build system for OCaml and Coq/Rocq used to build the Rocq Prover itself and many Rocq projects.

The opam repository for Rocq packages has been maintained by Guillaume Claret, Guillaume Melquiond, Karl Palmskog, Matthieu Sozeau and Enrico Tassi with contributions from many users. The up-to-date list of packages is available on the Rocq website.

Erik Martin-Dorel and Jaime Arias maintained the Rocq Docker images. Erik Martin-Dorel maintained the docker-keeper compiler used to build and keep those images up to date (note that the tool is not Rocq specific). Erik Martin-Dorel and Théo Zimmermann maintained the docker-coq-action container action (which is applicable to any opam project hosted on GitHub).

Cyril Cohen, Vincent Laporte, Pierre Roux and Théo Zimmermann maintained the Nix toolbox. The docker-coq-action and the Nix toolbox are used by many Rocq projects for continuous integration.

Rocq 9.0 was made possible thanks to the following 27 reviewers: Yves Bertot, Ali Caglayan, Tej Chajed, Andres Erbsen, Jim Fehrle, Emilio Jesús Gallego Arias, Gaëtan Gilbert, Jason Gross, Samuel Gruetter, Hugo Herbelin, Thomas Lamiaux, Olivier Laurent, Rodolphe Lepigre, Erik Martin-Dorel, Guillaume Melquiond, Guillaume Munch-Maccagnoni, Karl Palmskog, Pierre-Marie Pédrot, Pierre Rousselin, Pierre Roux, Marcello Seri, Michael Soegtrop, Matthieu Sozeau, Enrico Tassi, Romain Tetley, Oliver Turner and Théo Zimmermann.

See the Rocq Team page for more details on Rocq's development teams.

The 48 contributors to the 9.0 version are: Jean Abou Samra, Tanaka Akira, David Allsopp, Frédéric Besson, Mathis Bouverot, Sylvain Chiron, Cyril Cohen, Lucas Donati, Andrej Dudenhefner, Arya Elfren, Andres Erbsen, Siegmentation Fault, Jim Fehrle, Gaëtan Gilbert, Tomaz Gomes Mascarenhas, Jason Gross, Hugo Herbelin, Florent Hivert, Daniil Iaitskov, Emilio Jesús Gallego Arias, Jan-Oliver Kaiser, Rodolphe Lepigre, Yann Leray, Felix Loyau-Kahn, Erik Martin-Dorel, Guillaume Melquiond, Guillaume Munch-Maccagnoni, Aleksandar Nanevski, Charles Norton, Karl Palmskog, Pierre-Marie Pédrot, Pierre Rousselin, Pierre Roux, Kazuhiko Sakaguchi, Gabriel Scherer, Marcello Seri, Benny Smit, Michael Soegtrop, Matthieu Sozeau, Nicolas Tabareau, Enrico Tassi, Oliver Turner, Quentin Vermande, Daneel Yaitskov, Remzi Yang, Tan Yee Jian and Théo Zimmermann.

The Coq/Rocq community at large helped improve this new version via the GitHub issue and pull request system, the coq-club@inria.fr mailing list, the Discourse forum and the Coq Zulip chat.

Version 9.0's development spanned 7 months from the release of Coq 8.20.0. Pierre-Marie Pédrot and Matthieu Sozeau are the release managers of Rocq 9.0. This release is the result of 491 merged PRs, closing 68 issues.