BIbirdculture·Dec 24, 2025Submission
Granule, a statically-typed linear functional language with graded modal types
1 points · Open discussiongranule-project
granule
Haskell2019–2025
granule-project / granule
granule
A statically-typed linear functional language with graded modal types for fine-grained program reasoning
4Distinct people
4Mentions
0Explicit recommenders
746GitHub stars
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A statically-typed linear functional language with graded modal types for fine-grained program reasoning
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Nov 7–Nov 14 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/14/2026, 3:56:07 PM UTC.
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HN mentions by year4 dated mentions
Observed mentions: 2019-04-14 06:15:06 UTC to 2025-12-24 14:00:44 UTC.
Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.
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| Period | Start (UTC) | End (exclusive, UTC) | Mentions | Submissions | Comments |
|---|---|---|---|---|---|
| 2019 | 2019-01-01 00:00:00 UTC | 2020-01-01 00:00:00 UTC | 1 | 0 | 1 |
| 2020 | 2020-01-01 00:00:00 UTC | 2021-01-01 00:00:00 UTC | 0 | 0 | 0 |
| 2021 | 2021-01-01 00:00:00 UTC | 2022-01-01 00:00:00 UTC | 0 | 0 | 0 |
| 2022 | 2022-01-01 00:00:00 UTC | 2023-01-01 00:00:00 UTC | 0 | 0 | 0 |
| 2023 | 2023-01-01 00:00:00 UTC | 2024-01-01 00:00:00 UTC | 0 | 0 | 0 |
| 2024 | 2024-01-01 00:00:00 UTC | 2025-01-01 00:00:00 UTC | 1 | 0 | 1 |
| 2025 | 2025-01-01 00:00:00 UTC | 2026-01-01 00:00:00 UTC | 2 | 2 | 0 |
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4 sourcesGranule – A statically-typed linear functional language with graded modal types
2 points · Open discussionI'd recommend by starting with the talk by Daniel Marshall (one of the authors) from Lambda Days 2023, "A Hitchhiker's Guide to Linearity", https://www.youtube.com/watch?v=QtlkqJGdnuM
The Granule Project's website, https://granule-project.github.io/, links relevant resources, too, in particular https://granule-project.github.io/granule.html and https://github.com/granule-project/granule/blob/main/example...
The latter tutorial is based on "Quantitative program reasoning with graded modal types" (ICFP 2019), with the talk and paper available at https://dl.acm.org/doi/10.1145/3341714
See also "Linearity and Uniqueness: An Entente Cordiale" (ESOP 2022), https://granule-project.github.io/papers/esop22-paper.pdf
In Functional ownership through fractional uniqueness> A language with dependent types and borrow checking
I'm definitely interested in this! There are significant challenges here though, particularly with respect to combining dependent types with effects and coeffects! This is open research, but significant progress is being made, and I'm hopeful. I'm currently keeping an eye on https://github.com/granule-project/granule, which seems like it might have some interesting things to say about this.
Currently I'm trying to learn how to implement dependent types in my programming language, Pikelet: https://github.com/pikelet-lang/pikelet (currently doing a rebuild of the front-end in https://github.com/brendanzab/rust-nbe-for-mltt). I'm hoping that once I've done this I might eventually be able to start looking at implementing something to do with borrow checking in it, but who knows! The more I
Read the rest
learn the less I seem to know! Always interested in chatting to people about this at our Gitter channel: https://gitter.im/pikelet-lang/Lobby
> Idris is perhaps the most famous dependently typed language.
I'd probably put Coq and Agda ahead of Idris in terms of being well known and established, but Idris is certainly pretty cool in how it tries to target practical programming.