FUNARCH 2026

The Fourth ACM SIGPLAN Workshop on Functional Software Architecture - FP in the Large

“Functional Software Architecture” refers to methods of construction and structure of large and long-lived software projects that are implemented in functional languages and released to real users, typically in industry.

The goals for the workshop are:

• To assemble a community interested in software architecture techniques and technologies specific to functional programming;

• To identify, categorize, and document topics relevant to the field of functional software architecture;

• To connect the functional programming community to the software architecture community to cross-pollinate between the two.

FUNARCH 2026 will be co-colocated with ICFP 2026 in Indianapolis in August 2026.

News is available on Mastodon, Bluesky, and Twitter.

Call for Lightning Talks

“Functional Software Architecture” refers to methods of construction and structure of large and long-lived software projects that are implemented in functional languages and released to real users, typically in industry.

The goals for the workshop are:

• To assemble a community interested in software architecture techniques and technologies specific to functional programming;

• To identify, categorize, and document topics relevant to the field of functional software architecture;

• To connect the functional programming community to the software architecture community to cross-pollinate between the two.

Lightning talks describe topics related to the workshop goals but allow participants to present preliminary research, projects, or ideas in a five to ten minute presentation. Lightning talk submissions will not be part of the peer review process and will not be part of the formal proceedings. Notification of acceptance will be continuous.

Lightning talks can be delivered remotely.

Submission

Lightning talk proposals may be submitted here

The deadline for proposals is August 10th, AoE.

Accepted lightning talks will be posted on the workshops website but will not be included in the published proceedings.

Call for Papers

FUNARCH 2026, Exact Date to be announced

Co-located with ICFP 2026

Timeline (Dates are estimates and subject to change)

Paper submission: 1st June 2026

Author notification: 3rd July 2026

Camera ready copy: 7th August 2026

Workshop: Exact date to be determined

All deadlines are 23:59 UTC-12, anywhere on Earth.

Background

“Functional Software Architecture” refers to methods of construction and structure of large and long-lived software projects that are implemented in functional languages and released to real users, typically in industry.

The goals for the workshop are:

• To assemble a community interested in software architecture techniques and technologies specific to functional programming;

• To identify, categorize, and document topics relevant to the field of functional software architecture;

• To connect the functional programming community to the software architecture community to cross-pollinate between the two.

Scope

The workshop seeks submissions in a range of categories:

You’re a member of the FP community and have thought about how to support programming in the large, for example by framing functional ideas in architectural terms or vice verse, comparing different languages in terms of their architectural capabilities, clarifying architectural roles played by formal methods, proof assistants and DSLs, or observing how functional concepts are used in other language and architecture communities.

Great, submit a research paper!

You’re a member of the architecture community, and have thought about how your discipline might help functional programmers, for example by applying domain-driven design, implementing hexagonal architecture, or designing self-contained systems.

Excellent, submit a research paper!

You’ve worked on a large project using functional programming, and it’s worked out well, or terribly, or a mix of both; bonus points for deriving architectural principles from your experience.

Wonderful, submit an experience report!

You know a neat architectural idiom or pattern that may be useful to others developing large functional software systems.

Fabulous, submit an architectural pearl!

You have something that doesn’t fit the above categories, but that still relates to functional software architecture, such as something that can be written up, or that could be part of the workshop format like a panel debate or a fishbowl.

Superb, submit to the open category!

Research papers should explain their research contributions in both general and technical terms, identifying what has been accomplished, explaining why it is significant, and relating it to previous work, and to other languages where appropriate.

Experience reports and architectural pearls need not necessarily report original research results. The key criterion for such papers is that they make a contribution from which others can benefit. It is not enough simply to describe a large software system, or to present ideas that are specific to a particular system.

Open category submissions that are not intended for publication are not required to follow the formatting guidelines, and can submit in PDF, word or plain text format as preferred. Not knowing what kinds of submissions we will receive, we cannot be specific as to how they will be evaluated. However, submissions that seem likely to stimulate discussion around practices in functional architecture are encouraged.

If you are unsure whether your contribution is suitable, or if you need any kind of help with your submission, please email the program chairs (Jeff and Nicolas).

Submission

Papers must be submitted by 1st June 2026 using the hotcrp submission page.

Formatting: submissions intended for publication must be in PDF format and follow the ACM SIGPLAN style guidelines, using the acmart format and the sigplan sub-format. Please use the review option when submitting, as this enables line numbers for easy reference in reviews. For further details, see SIGPLAN’s author information.

If your submission is not a research paper, please mark this using a subtitle (Experience Report, Architectural Pearl, Open Category).

Length: submissions must adhere to the limits specified below. However, there is no requirement or expectation that all pages are used, and authors are encouraged to strive for brevity. The page limit includes the paper and references but not an appendix.

Research papers: 5 to 12 pages

Architectural pearls: 5 to 12 pages

Experience reports: 3 to 6 pages

Open category: 1 to 6 pages

Publication: The proceedings of FUNARCH 2026 will be published in the ACM Digital Library, and authors of accepted papers are required to agree to one of the standard ACM licensing options. Accepted papers must be presented at the workshop by one of the authors, but in special cases we may consider remote presentation.

The official publication date is the date the papers are made available in the ACM Digital Library. This date may be up to two weeks prior to the first day of the conference. The official publication date affects the deadline for any patent filings related to published work.

Program Chairs

• Jeffrey Young (Unaffiliated)
• Nicolas Wu (University of Melbourne)

Program Committee

• Isabella Stilkerich (Schaeffler Technologies)
• Ryan Scott (Galois)
• Facundo Dominguez (Tweag)
• J. Garrett Morris (University of Iowa)
• Laurent P. René de Cotret (Bitnomial)
• Christiaan Baaij (QBayLogic)