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[Jacques-Henri Jourdan <jacques-henri.jourdan AT normalesup.org>]

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                       CALL FOR CONTRIBUTIONS

         3rd Workshop on the Implementation of Type Systems

                            WITS 2024

                         January 20, 2024
                      London, United Kingdom

https://popl24.sigplan.org/home/wits-2024

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WITS 2024 is the third Workshop on the Implementation of Type Systems. The
workshop will be held on January 20, 2024, in London, United Kingdom, 
co-located
with POPL. The goal of this workshop is to bring together the 
implementors of a
variety of languages with advanced type systems. The main focus is on the
practical issues that come up in the implementation of these systems, 
rather
than the theoretical frameworks that underlie them. In particular, we 
want to
encourage exchanging ideas between the communities around specific 
systems that
would otherwise be accessible to only a very select group.

The workshop will have a mix of invited and contributed talks, organized
discussion times, and informal collaboration time.

*Scope*

We invite participants to share their experiences, study differences 
among the
implementations, and generalize lessons from those. We also want to 
promote the
creation of a shared vocabulary and set of best practices for 
implementing type
systems.

Here are a few examples of topics we are interested to discuss:

* syntax with binders and substitution
* conversion modulo beta and eta
* implicit arguments and metavariables
* unification and constraint solving
* metaprogramming and tactic languages
* editor integration and automation
* discoverability of language features
* pretty printing and error messages

This list is not exhaustive, so please contact the PC chairs in case you 
are
unsure if a topic falls within the scope of the workshop.

*Submissions*

WITS solicits two kinds of submissions:

* Contributed talks on the basis of an abstract. This can be on recently
 published or submitted work, work in progress, or a project that is 
still in
 the idea phase.

* Proposals for roundtable discussions. This can be on any topic within the
 scope of the workshop, but should have a broader scope than a contributed
 talk. If accepted, you will be in charge of leading a discussion of 45 
minutes
 around the proposed topic together with other interested attendees.

Both kinds of proposals should be accompanied by an abstract of max. 1 page
(exclusive of references), formatted according to the guidelines for 
SIGPLAN
conferences: use the `sigplan` option to the `acmart` LaTeX document 
class. WITS
will have no published proceedings, so submitting to WITS does not 
interfere
with submission (before, after, or simultaneously) with other
venues. Submissions are handled via https://wits24.hotcrp.com/.

*Important Dates*

- Abstract submission deadline: 10 November, 2023 (AoE)
- Notification: 1 December, 2023
- Workshop in London: 20 January, 2024

*Attendance and registration*

WITS 2024 is colocated with POPL 2024 in London, UK. Information
on registration and attendance will be posted on the POPL website
at https://popl24.sigplan.org/.

*Program Committee*

Lennart Augustsson      Epic Games, Sweden
Edwin Brady             St. Andrews, UK
Jesper Cockx            TU Delft, Netherlands   co-chair
Richard Eisenberg       Jane Street, USA        co-chair
Jacques-Henri Jourdan   CRNS, France
Matthieu Sozeau         INRIA, France
Ningning Xie            U. of Toronto, Canada