Unpacking Software Livestream

Join our monthly Unpacking Software livestream to hear about the latest news, chat and opinion on packaging, software deployment and lifecycle management!

Learn More

Chocolatey Product Spotlight

Join the Chocolatey Team on our regular monthly stream where we put a spotlight on the most recent Chocolatey product releases. You'll have a chance to have your questions answered in a live Ask Me Anything format.

Learn More

Chocolatey Coding Livestream

Join us for the Chocolatey Coding Livestream, where members of our team dive into the heart of open source development by coding live on various Chocolatey projects. Tune in to witness real-time coding, ask questions, and gain insights into the world of package management. Don't miss this opportunity to engage with our team and contribute to the future of Chocolatey!

Learn More

Calling All Chocolatiers! Whipping Up Windows Automation with Chocolatey Central Management

Webinar from
Wednesday, 17 January 2024

We are delighted to announce the release of Chocolatey Central Management v0.12.0, featuring seamless Deployment Plan creation, time-saving duplications, insightful Group Details, an upgraded Dashboard, bug fixes, user interface polishing, and refined documentation. As an added bonus we'll have members of our Solutions Engineering team on-hand to dive into some interesting ways you can leverage the new features available!

Watch On-Demand
Chocolatey Community Coffee Break

Join the Chocolatey Team as we discuss all things Community, what we do, how you can get involved and answer your Chocolatey questions.

Watch The Replays
Chocolatey and Intune Overview

Webinar Replay from
Wednesday, 30 March 2022

At Chocolatey Software we strive for simple, and teaching others. Let us teach you just how simple it could be to keep your 3rd party applications updated across your devices, all with Intune!

Watch On-Demand
Chocolatey For Business. In Azure. In One Click.

Livestream from
Thursday, 9 June 2022

Join James and Josh to show you how you can get the Chocolatey For Business recommended infrastructure and workflow, created, in Azure, in around 20 minutes.

Watch On-Demand
The Future of Chocolatey CLI

Livestream from
Thursday, 04 August 2022

Join Paul and Gary to hear more about the plans for the Chocolatey CLI in the not so distant future. We'll talk about some cool new features, long term asks from Customers and Community and how you can get involved!

Watch On-Demand
Hacktoberfest Tuesdays 2022

Livestreams from
October 2022

For Hacktoberfest, Chocolatey ran a livestream every Tuesday! Re-watch Cory, James, Gary, and Rain as they share knowledge on how to contribute to open-source projects such as Chocolatey CLI.

Watch On-Demand

F* language

This is not the latest version of F* language available.

  • 1
  • 2
  • 3 | Updated: 28 Aug 2018



Downloads of v


Software Author(s):

  • FStarLang

F* language

This is not the latest version of F* language available.

  • 1
  • 2
  • 3

All Checks are Passing

3 Passing Tests

Validation Testing Passed

Verification Testing Passed


Scan Testing Successful:

No detections found in any package files

Learn More

Deployment Method: Individual Install, Upgrade, & Uninstall

To install F* language, run the following command from the command line or from PowerShell:


To upgrade F* language, run the following command from the command line or from PowerShell:


To uninstall F* language, run the following command from the command line or from PowerShell:


Deployment Method:


This applies to both open source and commercial editions of Chocolatey.

1. Enter Your Internal Repository Url

(this should look similar to https://community.chocolatey.org/api/v2/)

2. Setup Your Environment

1. Ensure you are set for organizational deployment

Please see the organizational deployment guide

2. Get the package into your environment

  • Open Source or Commercial:
    • Proxy Repository - Create a proxy nuget repository on Nexus, Artifactory Pro, or a proxy Chocolatey repository on ProGet. Point your upstream to https://community.chocolatey.org/api/v2/. Packages cache on first access automatically. Make sure your choco clients are using your proxy repository as a source and NOT the default community repository. See source command for more information.
    • You can also just download the package and push it to a repository Download

3. Copy Your Script

choco upgrade fstar -y --source="'INTERNAL REPO URL'" --version="''" [other options]

See options you can pass to upgrade.

See best practices for scripting.

Add this to a PowerShell script or use a Batch script with tools and in places where you are calling directly to Chocolatey. If you are integrating, keep in mind enhanced exit codes.

If you do use a PowerShell script, use the following to ensure bad exit codes are shown as failures:

choco upgrade fstar -y --source="'INTERNAL REPO URL'" --version="''" 

Write-Verbose "Exit code was $exitCode"
$validExitCodes = @(0, 1605, 1614, 1641, 3010)
if ($validExitCodes -contains $exitCode) {
  Exit 0

Exit $exitCode

- name: Install fstar
    name: fstar
    version: ''
    state: present

See docs at https://docs.ansible.com/ansible/latest/modules/win_chocolatey_module.html.

chocolatey_package 'fstar' do
  action    :install
  source   'INTERNAL REPO URL'
  version  ''

See docs at https://docs.chef.io/resource_chocolatey_package.html.

cChocoPackageInstaller fstar
    Name     = "fstar"
    Version  = ""
    Source   = "INTERNAL REPO URL"

Requires cChoco DSC Resource. See docs at https://github.com/chocolatey/cChoco.

package { 'fstar':
  ensure   => '',
  provider => 'chocolatey',
  source   => 'INTERNAL REPO URL',

Requires Puppet Chocolatey Provider module. See docs at https://forge.puppet.com/puppetlabs/chocolatey.

4. If applicable - Chocolatey configuration/installation

See infrastructure management matrix for Chocolatey configuration elements and examples.


Private CDN cached downloads available for licensed customers. Never experience 404 breakages again! Learn more...

Package Approved

This package was approved by moderator gep13 on 31 Aug 2018.


F*: An ML-like language aimed at program verification

Build status


This package will install F* language with compatable version of z3.
It is recommended that you remove your z3 package and then install F*

F* website

More information on F* can be found at www.fstar-lang.org




The F* tutorial provides a first taste of verified programming in
F*, explaining things by example.


The F* wiki contains additional, usually more in-depth, technical
documentation on F*.

Editing F* code

You can edit F* code using your favourite text editor, but Emacs,
Atom, and Vim have extensions that add special support for F*,
including syntax highlighting and interactive development. More
details on editor support on the F* wiki .

Executing F* code

By default F* only verifies the input code, it does not compile or execute it.
To execute F* code one needs to translate it to either OCaml or F#, using
F*'s code extraction facility---this is invoked using the command line
argument --codegen OCaml or --codegen FSharp. More details on
executing F* code on the F* wiki .

Community mailing list

The fstar-club mailing list is dedicated to F* users. Here is where
all F* announcements are made to the general public (e.g. for
releases, new papers, etc) and where users can ask questions, ask for
help, discuss, provide feedback, announce jobs requiring at least 10
years of F* experience, etc.

List archives are public, but only members can post.
Join here!

Slack channel

Users can also ask questions on the #fstar Slack channel at
< http://fpchat.com/ >

Reporting issues

Please report issues using the F* issue tracker on GitHub.
Before filing please use search to make sure the issue doesn't already exist.
We don't maintain old releases, so if possible please use the
online F* editor or directly the GitHub sources to check
that your problem still exists on the master branch.


The F* for the masses blog is also expected to become an important
source of information and news on the F* project.


This new variant of F* is released under the Apache 2.0 license;
see LICENSE for more details.

$ErrorActionPreference = 'Stop'; # stop on all errors

Install-ChocolateyZipPackage -packageName 'FStar' -UnzipLocation $(Split-Path -Parent $MyInvocation.MyCommand.Definition) -Url64 'https://github.com/FStarLang/FStar/releases/download/v0.9.6.0/fstar_0.9.6.0_Windows_x64.zip' -checksum64 '566139126C1F8DCB0B2A398E6C3779FA16EE15E2B9C96EA7749DADE5B7F05806' -checksumType64 'sha256'

Log in or click on link to see number of positives.

In cases where actual malware is found, the packages are subject to removal. Software sometimes has false positives. Moderators do not necessarily validate the safety of the underlying software, only that a package retrieves software from the official distribution point and/or validate embedded software against official distribution point (where distribution rights allow redistribution).

Chocolatey Pro provides runtime protection from possible malware.

Add to Builder Version Downloads Last Updated Status
F* language 2023.9.3 52 Monday, September 4, 2023 Approved
F* language 2023.04.25 123 Tuesday, April 25, 2023 Approved
F* language 2023.04.08 49 Monday, April 10, 2023 Approved
F* language 2023.02.01 44 Thursday, February 2, 2023 Approved
F* language 2022.11.19 60 Saturday, November 19, 2022 Approved
F* language 2022.11.07 55 Tuesday, November 8, 2022 Approved
F* language 2022.10.07 38 Saturday, November 5, 2022 Approved
F* language 2022.08.10 75 Thursday, August 11, 2022 Approved
F* language 2022.07.13 57 Wednesday, July 13, 2022 Approved
F* language 2022.05.06 87 Saturday, May 7, 2022 Approved
F* language 2022.04.23 66 Sunday, April 24, 2022 Approved
F* language 2022.04.14 60 Sunday, April 17, 2022 Approved
F* language 2022.04.02 72 Sunday, April 3, 2022 Approved
F* language 2022.03.24 90 Sunday, March 27, 2022 Approved
F* language 2022.03.19 75 Sunday, March 20, 2022 Approved
F* language 2022.03.12 71 Sunday, March 13, 2022 Approved
F* language 2022.03.05 74 Sunday, March 6, 2022 Approved
F* language 2022.03.01 73 Tuesday, March 1, 2022 Approved
F* language 2022.02.12 73 Sunday, February 13, 2022 Approved
F* language 2022.02.05 80 Sunday, February 6, 2022 Approved
F* language 2022.01.29 66 Sunday, January 30, 2022 Approved
F* language 2022.01.22 79 Sunday, January 23, 2022 Approved
F* language 2022.01.15 71 Sunday, January 16, 2022 Approved
F* language 2022.01.08 66 Sunday, January 9, 2022 Approved
F* language 2022.01.01 63 Sunday, January 2, 2022 Approved
F* language 2021.12.25 64 Sunday, December 26, 2021 Approved
F* language 2021.12.18 66 Sunday, December 19, 2021 Approved
F* language 2021.12.11 61 Sunday, December 12, 2021 Approved
F* language 2021.12.10 62 Friday, December 10, 2021 Approved
F* language 2021.11.30 63 Sunday, December 5, 2021 Approved
F* language 2021.11.27 63 Thursday, December 2, 2021 Approved
F* language 2021.11.13 73 Sunday, November 14, 2021 Approved
F* language 2021.11.06 67 Sunday, November 7, 2021 Approved
F* language 2021.10.30 72 Sunday, October 31, 2021 Approved
F* language 2021.10.23 60 Sunday, October 24, 2021 Approved
F* language 2021.10.16 63 Sunday, October 17, 2021 Approved
F* language 2021.09.30 74 Sunday, October 3, 2021 Approved
F* language 2021.09.25 64 Sunday, September 26, 2021 Approved
F* language 2021.09.18 65 Sunday, September 19, 2021 Approved
F* language 2021.09.11 72 Sunday, September 12, 2021 Approved
F* language 2021.09.04 72 Sunday, September 5, 2021 Approved
F* language 2021.08.27 78 Monday, August 30, 2021 Approved
F* language 2021.07.31 93 Tuesday, August 17, 2021 Approved
F* language 261 Thursday, June 27, 2019 Exempted
F* language 585 Wednesday, October 17, 2018 Approved
F* language 198 Tuesday, August 28, 2018 Approved
F* language 476 Tuesday, September 5, 2017 Approved
F* language 450 Wednesday, May 3, 2017 Approved

A large number of people contributed to this release: thanks to all!

Here are a few highlights:

Main new features

  • Meta-F*: A metaprogramming and tactic framework, as described in this report. Code samples are in examples/tactics, examples/native_tactics and the FStar.Tactics and FStar.Reflection libraries. Many people contributed a lot to this work, especially Guido Martinez.

  • Improved type inference with two-phase typechecking: We now build verification conditions for a program after a first phase of type inference. This improves inference of implicit arguments and reduces our trust in the type inference. Thanks to Aseem Rastogi!

  • Caching typechecked modules: F* emits ".checked" files, an on-disk representation of a typechecked module that can be read back later. This significantly reduces the time to load a module's dependences.

Many other improvements

A sampling of improvements across the entire tool chain:

  • Resolving several syntactic ambiguities in the parser

  • A correct pretty printer for surface terms, using fstar --indent

  • A new dependence analysis to support incremental compilation for larger projects

  • Overhauling the higher order unification algorithm, both in the representation of meta-variables and in the handling of unfolding, leading to significant performance and robustness improvements (see https://github.com/FStarLang/FStar/wiki/Design-note:-Revising-the-unifier)

  • Automatic generation of interfaces for modules and tighter enforcement of abstraction boundaries (see https://github.com/FStarLang/FStar/wiki/Revised-checking-of-a-module's-interface)

  • Improvements to the SMT encoding, removing axioms that lead to performance problems and reducing brittleness related to optimizations in the encoding, notably shallow vs deep encodings

  • Improved type-based erasure for extraction

  • Several new and improved libraries, including a revised treatment of footprints for Low* programs, in FStar.Modifies

  • And work by many people in Project Everest whose use of F* drove a lot of the work in this release.

  • Plus many other improvements and changes as described in https://github.com/FStarLang/FStar/blob/v0.9.6.0/CHANGES.md

  • And 180 closed github issues

This package has no dependencies.

Discussion for the F* language Package

Ground Rules:

  • This discussion is only about F* language and the F* language package. If you have feedback for Chocolatey, please contact the Google Group.
  • This discussion will carry over multiple versions. If you have a comment about a particular version, please note that in your comments.
  • The maintainers of this Chocolatey Package will be notified about new comments that are posted to this Disqus thread, however, it is NOT a guarantee that you will get a response. If you do not hear back from the maintainers after posting a message below, please follow up by using the link on the left side of this page or follow this link to contact maintainers. If you still hear nothing back, please follow the package triage process.
  • Tell us what you love about the package or F* language, or tell us what needs improvement.
  • Share your experiences with the package, or extra configuration or gotchas that you've found.
  • If you use a url, the comment will be flagged for moderation until you've been whitelisted. Disqus moderated comments are approved on a weekly schedule if not sooner. It could take between 1-5 days for your comment to show up.
comments powered by Disqus