coq-community/vscoq

VsCoq is an extension for Visual Studio Code (VS Code) and VSCodium with support for the Coq Proof Assistant.

This extension is currently developed and maintained as part of Coq Community by Maxime Dénès, Paolo G. Giarrusso, Huỳnh Trần Khanh, Enrico Tassi, Romain Tetley, Laurent Théry, and contributors.

Status

• VsCoq 1 (versions 0.x.y) is based on the original VsCoq implementation by C.J. Bell and compatible with Coq 8.7 or more recent. It uses the legacy XML protocol spoken by CoqIDE. For more information, see the VsCoq 1 branch.
• VsCoq 2 (beta releases versions 1.9.x) is a full reimplementation around a language server which natively speaks the LSP protocol. VsCoq 2 is compatible with Coq 8.18 or more recent, and supports manual or continuous mode checking.

Installing a VsCoq 2 beta release

To use a beta release of VsCoq 2, you need to (1) install the VsCoq 2 language server and (2) install and configure the VsCoq extension in either VS Code or VSCodium.

Installing the language server

The beta releases of the language server are available in the extra-dev Coq opam repository, and relies on Coq 8.18+rc1 from the core-dev Coq opam repository.

After creating an opam switch, activate these repositories, pin Coq, and install the vscoq-language-server package:

$ opam repo add coq-core-dev https://coq.inria.fr/opam/core-dev
$ opam repo add coq-extra-dev https://coq.inria.fr/opam/extra-dev
$ opam pin add coq 8.18+rc1
$ opam install vscoq-language-server

After installation, check that you have vscoqtop in your shell and note the path to this executable:

$ which vscoqtop

Installing and configuring the extension

To install the VS Code or VSCodium extension, first run code or codium. Then press F1 to open the command palette, start typing "Extensions: Install Extension", press enter, and search for "vscoq". Switch to the pre-release version of the extension and enable it. Finally, go to the extension settings and enter the vscoqtop full path from above in the field "Vscoq: Path".

If you want top-down processing of Coq files as in VsCoq1, you can go to the "Proof: Mode" and select "Manual". Otherwise, processing will asynchronous.

Features

• Syntax highlighting
• Asynchronous proof checking
• Continuous and incremental checking of Coq documents

The new version of vscoq allows for continuous checking, see the goal panel update as you scroll or edit your document.

Note that users can opt out and choose to use the classic step by step checking mode.

• Customisable goal panel

Users can choose their preferred display mode, see goals in accordion lists...

... Or organized in tabs.

• Dedicated panel for queries and their history

We now support a dedicated panel for queries. We currently support Search, Check, About, Locate and Print with plans to add more in the future.

• Supports _CoqProject

Settings

After installation and activation of the extension:

(Press F1 and start typing "settings" to open either workspace/project or user settings.)

• "vscoq.path": "" -- specify the path to vscoqtop (e.g. path/to/vscoq/bin/vscoqtop)
• "vscoq.args": [] -- an array of strings specifying additional command line arguments for vscoqtop (typically accepts the same flags as coqtop)

License

Unless mentioned otherwise, files in this repository are distributed under the MIT License.

The files client/syntax/coq.tmLanguage and client/coq.configuration.json are also distributed under the MIT License, Copyright (c) Christian J. Bell and contributors.