COQ DEVELOPMENT TEAM SESSION Coq Development Team Coq Workshop - - PowerPoint PPT Presentation

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

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Coq Development Team

Coq Development Team

Coq 8.10

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• 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

Coq 8.10

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• ~2500 commits
• ~650 PRs merged
• 150+ issues closed
• 61 contributors

Coq Development Team

Coq 8.10 Schedule

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Feature freeze 8.10.0 release Jan 2019 April 2019 May 15 2019 8.10beta1 8.10beta2 June 20 2019 8.10beta3 Sep 2019 Oct 2019 8.10.0

Delays because of:

• CoqIDE stability issues (fixed by M. Soegtrop)
• Soundness bug in template polymorphism (WIP by M. Sozeau)

Coq Development Team

Coq 8.11

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• 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

Q&A

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Ask any Coq-related question!

Thank you!