COQ DEVELOPMENT TEAM SESSION Coq Development Team Coq Workshop 2019 Portland Sep 8th, 2019
OUTLINE 1. Coq 8.10 2. Coq 8.11 3. Q & A Coq Development Team 2
Coq 8.10 New Features: ● Proof-irrelevant propositions SProp (G. Gilbert) ○ 63-bit machine integers (M. Dénès, B. Grégoire, V. Laporte, L. Théry) ○ Numeral notations for strings (J. Gross) and decimals (P. Roux) ○ Improvements: ● More complete termination checking (E. Tassi) ○ Simplex-based algorithm for lia, nia, lra, nra (F. Besson) ○ New intro patterns in ssreflect (+, [^foo], >, /ltac:foo, ...) (E. Tassi) ○ New ssreflect tactic under (E. Martin-Dorel, E. Tassi) ○ Combined Scheme in Type (T. Winterhalter) ○ GTK3 port of CoqIDE (H. Herbelin) based on lablgtk3 (J. Garrigue) ○ Ltac backtraces (P-M. Pédrot) ○ Coq Development Team 3
Coq 8.10 ~2500 commits ● ~650 PRs merged ● 150+ issues closed ● 61 contributors ● Coq Development Team 4
Coq 8.10 Schedule Sep May 15 Jan 2019 2019 2019 8.10.0 Feature freeze 8.10beta2 8.10beta1 8.10.0 release 8.10beta3 April Oct June 20 2019 2019 2019 Delays because of: CoqIDE stability issues (fixed by M. Soegtrop) ● Soundness bug in template polymorphism (WIP by M. Sozeau) ● Coq Development Team 5
Coq 8.11 Ltac2 (P-M. Pédrot, integration by M. Dénès) ● Primitive floating point numbers* (G. Bertholon, E. ● Martin-Dorel, P. Roux) Compiled interfaces (A. Charguéraud) ● Bidirectionnality hints (M. Dénès) ● Disabling termination/positivity checking (S. Boulier) ● Better extraction of strings* (X. Leroy) ● Improved ambiguous coercion path warning (K. Sakaguchi) ● Stricter syntax for disjunctive patterns (G. Gonthier) ● Better control on canonical projections (V. Laporte) ● (*) Not integrated yet Coq Development Team 6
Q&A Ask any Coq-related question! Coq Development Team 7
Thank you!
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