May 2024 - ghc-devs - Haskell.org

Haddock now lives full-time in the GHC repository
by Hécate 17 May '24

17 May '24

Hello devs, As of today, Haddock now lives in the GHC repository, and not anymore as a submodule from another Gitlab repository which itself was rebased on top of a Github repository. You are encouraged to migrate our currently opened PRs to the GHC repo. If you have any trouble, please do ping me on Matrix (@acidalia:matrix.org), on GitLab (@kleidukos), or by email directly. Read more here: https://discourse.haskell.org/t/haddock-now-lives-in-the-ghc-repository/9576 My thanks to Ben Gamari who was essential in making this migration happen! Cheers, Hécate -- Hécate ✨ 🐦: @TechnoEmpress IRC: Hecate WWW: https://glitchbra.in RUN: BSD

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account approval
by Davide Pancotto 16 May '24

16 May '24

Hello, I registered on gitlab as davide-pn because I want to report a bug. If you want to know it, you can approve it.

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GHC notes plugin for Haskell language server
by Jan van Brügge 13 May '24

13 May '24

Hi all, a few days ago, version 2.8.0.0 of HLS was released and with that the new notes plugin. With this, you can use "Go to Definition" not only on Haskell types and identifiers, but also on Note references and you editor will jump to the relevant file and the position of the full note. Some of you might remember that I created the initial proof of concept at last year's ZuriHac/GHC contributor's Workshop. TL;DR: Update HLS and you dont need to search for notes any more. Cheers, Jan

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GHC 9.10.1 is now available
by Ben Gamari 11 May '24

11 May '24

The GHC developers are very pleased to announce the release of GHC 9.10.1. Binary distributions, source distributions, and documentation are available at [downloads.haskell.org] and shortly via [GHCup]. GHC 9.10 brings a number of new features and improvements, including: * The introduction of the `GHC2024` language edition, building upon `GHC2021` with the addition of a number of widely-used extensions. * Partial implementation of the [GHC Proposal #281], allowing visible quantification to be used in the types of terms. * [Extension] of LinearTypes to allow linear `let` and `where` bindings * The implementation of the [exception backtrace proposal], allowing the annotation of exceptions with backtraces, as well as other user-defined context * Further improvements in the info table provenance mechanism, reducing code size to allow IPE information to be enabled more widely * Javascript FFI support in the WebAssembly backend * Improvements in the fragmentation characteristics of the low-latency non-moving garbage collector. * ... and many more A full accounting of changes can be found in the [release notes]. As always, GHC's release status, including planned future releases, can be found on the [GHC Wiki]. We would like to thank GitHub, IOG, the Zw3rk stake pool, Well-Typed, Tweag I/O, Serokell, Equinix, SimSpace, the Haskell Foundation, and other anonymous contributors whose on-going financial and in-kind support has facilitated GHC maintenance and release management over the years. Finally, this release would not have been possible without the hundreds of open-source contributors whose work comprise this release. As always, do give this release a try and open a [ticket] if you see anything amiss. [release notes]: https://downloads.haskell.org/ghc/9.10.1/docs/users_guide/9.10.1-notes.html [GHC Wiki]: https://gitlab.haskell.org/ghc/ghc/-/wikis/GHC-status [exception backtrace]: https://github.com/ghc-proposals/ghc-proposals/pull/330 [GHC Proposal #281]: https://github.com/ghc-proposals/ghc-proposals/pull/281 [linear let]: https://github.com/ghc-proposals/ghc-proposals/pull/624 [downloads.haskell.org] https://downloads.haskell.org/ghc/9.10.1 [ticket]: https://gitlab.haskell.org/ghc/ghc/-/issues/new [GHCup]: https://www.haskell.org/ghcup/

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Reasoning on unicode static data compression at GHC-side
by Serge S. Gulin 10 May '24

10 May '24

Hi, dear ghc-devs subscribers! Propose a discussion about unicode size https://gitlab.haskell.org/ghc/ghc/-/issues/24789. It seems we should do nothing with it in code in the general case but it has its own approaches on how to control the size of resulting bundles/executions. -- Serge S. Gulin https://gitlab.haskell.org/gulin.serge

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[ghc-9.10-rc] foldl' ambiguities in several packages
by Shayne Fletcher 10 May '24

10 May '24

using the ghc-9.10 release candidate, at least all of text-short, unordered-containers and vector-stream fail to compile with ambiguities around the export of symbol `foldl'`. example: ``` unordered-containers> [1 of 8] Compiling Data.HashMap.Internal.Array unordered-containers> /private/var/folders/rj/q93vlym52875_k7nwz_c3wth0000gn/T/stack-da6d6d11ecd50280/unordered-containers-0.2.19.1/Data/HashMap/Internal/Array.hs:66:7-12: error: [GHC-87543] unordered-containers> Ambiguous occurrence ‘foldl'’. unordered-containers> It could refer to unordered-containers> either ‘Prelude.foldl'’, unordered-containers> imported from ‘Prelude’ at Data/HashMap/Internal/Array.hs:(97,1)-(98,48) unordered-containers> (and originally defined in ‘ghc-internal-9.1001.0:GHC.Internal.Data.Foldable’), unordered-containers> or ‘Data.HashMap.Internal.Array.foldl'’, unordered-containers> defined at Data/HashMap/Internal/Array.hs:380:1. unordered-containers> | unordered-containers> 66 | , foldl' unordered-containers> | ^^^^^^ ``` so far i've found all such errors can be overcome by qualification at the export site but is this expected? -- Shayne Fletcher

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