Downloads of v 0.9.6.0
F*: An ML-like language aimed at program verification
This package will install F* language with compatable version of z3.
It is recommended that you remove your z3 package and then install F*
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
--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.
Users can also ask questions on the
#fstar Slack channel at
< http://fpchat.com/ >
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
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;
LICENSE for more details.
To install F* language, run the following command from the command line or from PowerShell:
C:\> choco install fstar
To upgrade F* language, run the following command from the command line or from PowerShell:
C:\> choco upgrade fstar
$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'
Virus Scan Results
- FStar.0.9.6.0.nupkg (652f2056bde1) - ## / 60 - Log in or click on link to see number of positives
This package has no dependencies.
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.Reflectionlibraries. 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
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
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
|F* language 0.9.6.001||109||Wednesday, October 17, 2018||approved|
|F* language 0.9.6.0||50||Tuesday, August 28, 2018||approved|
|F* language 0.9.5.0||290||Tuesday, September 5, 2017||approved|
|F* language 0.9.4.0||241||Wednesday, May 3, 2017||approved|
Discussion for the F* language Package
- 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.
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