# Core Libraries Committee

**URL:** https://discourse.haskell.org/c/clc/13.md

[Latest](https://discourse.haskell.org/latest.md) · [Categories](https://discourse.haskell.org/categories.md) · [Tags](https://discourse.haskell.org/tags.md)

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## [About the Core Libraries Committee category](https://discourse.haskell.org/t/about-the-core-libraries-committee-category/5844)

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**Author:** [@Kleidukos](https://discourse.haskell.org/u/Kleidukos)\
**Replies:** 0

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This category is made for announcements related to the Core Libraries Committee (CLC). It is to be used for cross-posting CLC proposals from GitHub, or other types of announcement.

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## [Status of servant-multipart / Call for co-maintainers (blocking downstream Stackage packages)](https://discourse.haskell.org/t/status-of-servant-multipart-call-for-co-maintainers-blocking-downstream-stackage-packages/14698)

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**Author:** [@tusharad](https://discourse.haskell.org/u/tusharad)\
**Replies:** 4\
**Last updated:** [September 18, 2026, 5:12pm UTC](https://discourse.haskell.org/t/status-of-servant-multipart-call-for-co-maintainers-blocking-downstream-stackage-packages/14698 "2026-09-18T17:12:53Z")

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Hi everyone, I’m writing to check on the current maintenance status of haskell-servant/servant-multipart and see if we can help get maintenance moving again, or find co-maintainers who can help with triage and releases. …

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## [CLC proposals RFC](https://discourse.haskell.org/t/clc-proposals-rfc/14334)

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**Author:** [@TeofilC](https://discourse.haskell.org/u/TeofilC)\
**Replies:** 17\
**Last updated:** [September 17, 2026, 9:13am UTC](https://discourse.haskell.org/t/clc-proposals-rfc/14334 "2026-09-17T09:13:04Z")

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CLC proposals are the process for changing the interface of base. They have a broad impact and often benefit from the perspectives of members of the community, although the decision on whether to accept or reject them li…

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## [CLC Proposal #341: Strict variants of mutable data types](https://discourse.haskell.org/t/clc-proposal-341-strict-variants-of-mutable-data-types/12403)

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**Author:** [@tchoutri](https://discourse.haskell.org/u/tchoutri)\
**Replies:** 1\
**Last updated:** [August 10, 2026, 8:28pm UTC](https://discourse.haskell.org/t/clc-proposal-341-strict-variants-of-mutable-data-types/12403 "2026-08-10T20:28:23Z")

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At Scrive, we have found on several occasions – due to the efforts of @arybczak – space leaks coming from the default, lazy-evaluated implementation of the MVar API. This has been the initial motivator to create the mut…

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## [Split base into GHC and non-GHC parts](https://discourse.haskell.org/t/split-base-into-ghc-and-non-ghc-parts/14339)

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**Author:** [@augustss](https://discourse.haskell.org/u/augustss)\
**Replies:** 2\
**Last updated:** [July 6, 2026, 3:19pm UTC](https://discourse.haskell.org/t/split-base-into-ghc-and-non-ghc-parts/14339 "2026-07-06T15:19:46Z")

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A general comment. It would be nice if base was split into GHC and non-GHC parts. But I’m just day dreaming.

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## [CLC Elections January 2026](https://discourse.haskell.org/t/clc-elections-january-2026/13492)

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**Author:** [@TeofilC](https://discourse.haskell.org/u/TeofilC)\
**Replies:** 7\
**Last updated:** [March 5, 2026, 3:29pm UTC](https://discourse.haskell.org/t/clc-elections-january-2026/13492 "2026-03-05T15:29:02Z")

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Happy new year! The Core Libraries Committee seeks nominations for three seats. What is CLC? CLC is a volunteer body, primarily tasked with management of the API of base package, but also owning so-called Core Librarie…

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## [Proposal: add Data.List\[.NonEmpty\].unfoldM](https://discourse.haskell.org/t/proposal-add-data-list-nonempty-unfoldm/9738)

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**Author:** [@Bodigrim](https://discourse.haskell.org/u/Bodigrim)\
**Replies:** 0\
**Last updated:** [June 15, 2024, 4:27pm UTC](https://discourse.haskell.org/t/proposal-add-data-list-nonempty-unfoldm/9738 "2024-06-15T16:27:19Z")

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## [Informal discussion about the progression of \`base\`](https://discourse.haskell.org/t/informal-discussion-about-the-progression-of-base/6439)

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**Author:** [@mixphix](https://discourse.haskell.org/u/mixphix)\
**Replies:** 157\
**Last updated:** [May 6, 2024, 11:57am UTC](https://discourse.haskell.org/t/informal-discussion-about-the-progression-of-base/6439 "2024-05-06T11:57:28Z")

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The Haskell community has struggled with its base library since time immemorial (1), as evidenced by the number of alternative Preludes, the (modern) lack of alternative compilers, and recent comments in CLC issues. I’d…

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## [Early feedback: left-biasing \`max\`](https://discourse.haskell.org/t/early-feedback-left-biasing-max/7392)

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**Author:** [@rhendric](https://discourse.haskell.org/u/rhendric)\
**Replies:** 78\
**Last updated:** [September 21, 2023, 9:16pm UTC](https://discourse.haskell.org/t/early-feedback-left-biasing-max/7392 "2023-09-21T21:16:20Z")

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tl;dr: Looking for early feedback on making max and maximumBy left-biased; read this for more. It is a little-known\*, and possibly rarely-relevant, fact that the default implementation of max in the Ord class is right-b…

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## [CLC Update (August 2023)](https://discourse.haskell.org/t/clc-update-august-2023/7210)

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**Author:** [@ChShersh](https://discourse.haskell.org/u/ChShersh)\
**Replies:** 0\
**Last updated:** [August 4, 2023, 1:29pm UTC](https://discourse.haskell.org/t/clc-update-august-2023/7210 "2023-08-04T13:29:01Z")

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As part of my Core Libraries Committee (CLC) involvement, I committed to writing monthly CLC updates. Previous update: CLC Update (July 2023) All CLC work is done by volunteers in their free time. :gem: Featured d…

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## [Feedback wanted: Module naming conventions for GHC base libraries](https://discourse.haskell.org/t/feedback-wanted-module-naming-conventions-for-ghc-base-libraries/7208)

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**Author:** [@adamgundry](https://discourse.haskell.org/u/adamgundry)\
**Replies:** 0\
**Last updated:** [August 4, 2023, 7:38am UTC](https://discourse.haskell.org/t/feedback-wanted-module-naming-conventions-for-ghc-base-libraries/7208 "2023-08-04T07:38:28Z")

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The GHC team would like input on module/package naming for the planned restructuring of the libraries shipped with GHC. Please take a look at the proposal and let us know what you think!

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## [CLC Proposal to add firstA and secondA to Bitraversable](https://discourse.haskell.org/t/clc-proposal-to-add-firsta-and-seconda-to-bitraversable/7083)

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**Author:** [@googleson78](https://discourse.haskell.org/u/googleson78)\
**Replies:** 1\
**Last updated:** [July 24, 2023, 1:23pm UTC](https://discourse.haskell.org/t/clc-proposal-to-add-firsta-and-seconda-to-bitraversable/7083 "2023-07-24T13:23:08Z")

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Hey all! I’ve made a proposal to extend bases Bitraversable with firstA and secondA, mimicking the first and second of Bifunctor - Extend Data.Bitraversable API with firstA and secondA · Issue #172 · haskell/core-librar…

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## [Adding Fix to the standard library](https://discourse.haskell.org/t/adding-fix-to-the-standard-library/7052)

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**Author:** [@romes](https://discourse.haskell.org/u/romes)\
**Replies:** 1\
**Last updated:** [July 20, 2023, 9:11pm UTC](https://discourse.haskell.org/t/adding-fix-to-the-standard-library/7052 "2023-07-20T21:11:43Z")

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Hello all, I’ve made a CLC proposal to add the definition of Fix to the standard library, under the Data.Recursion.Fix or Data.Fix.Type modules (do speak up if you think there’s a better name space for it, it’s open for…

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## [CLC Update (July 2023)](https://discourse.haskell.org/t/clc-update-july-2023/6905)

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**Author:** [@ChShersh](https://discourse.haskell.org/u/ChShersh)\
**Replies:** 0\
**Last updated:** [July 8, 2023, 1:50pm UTC](https://discourse.haskell.org/t/clc-update-july-2023/6905 "2023-07-08T13:50:56Z")

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As part of my Core Libraries Committee (CLC) involvement, I committed to writing monthly CLC updates. Previous update: CLC Update (June 2023) All CLC work is done by volunteers in their free time. :gem: Featured…

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## [CLC Update (June 2023)](https://discourse.haskell.org/t/clc-update-june-2023/6395)

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**Author:** [@ChShersh](https://discourse.haskell.org/u/ChShersh)\
**Replies:** 0\
**Last updated:** [June 10, 2023, 9:46am UTC](https://discourse.haskell.org/t/clc-update-june-2023/6395 "2023-06-10T09:46:24Z")

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As part of my Core Libraries Committee (CLC) involvement, I committed to writing monthly CLC updates, and this is the 4th update. Previous update: CLC Update (May 2023) All CLC work is done by volunteers in their f…

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## [CLC Update (May 2023)](https://discourse.haskell.org/t/clc-update-may-2023/6248)

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**Author:** [@ChShersh](https://discourse.haskell.org/u/ChShersh)\
**Replies:** 0\
**Last updated:** [May 7, 2023, 12:40pm UTC](https://discourse.haskell.org/t/clc-update-may-2023/6248 "2023-05-07T12:40:41Z")

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As part of my Core Libraries Committee (CLC) involvement, I committed to writing monthly CLC updates, and this is the 3rd update. Previous update: CLC Update (April 2023) All CLC work is done by volunteers in their …

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## [CLC: Status of \*\*ALL\*\* proposals](https://discourse.haskell.org/t/clc-status-of-all-proposals/6049)

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**Author:** [@ChShersh](https://discourse.haskell.org/u/ChShersh)\
**Replies:** 6\
**Last updated:** [April 5, 2023, 5:37am UTC](https://discourse.haskell.org/t/clc-status-of-all-proposals/6049 "2023-04-05T05:37:09Z")

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A couple of weeks ago, I started the initiative to track the progress of all approved proposals in the new CLC process, and I’d like to share the final results. You can see an example of my tracked progress in the follo…

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## [CLC Update (April 2023)](https://discourse.haskell.org/t/clc-update-april-2023/6086)

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**Author:** [@ChShersh](https://discourse.haskell.org/u/ChShersh)\
**Replies:** 0\
**Last updated:** [April 3, 2023, 9:40am UTC](https://discourse.haskell.org/t/clc-update-april-2023/6086 "2023-04-03T09:40:35Z")

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As part of my CLC involvement, I committed to writing monthly CLC updates, and this is the 2nd update. Previous update: CLC Update (March 2023) All CLC work is done by volunteers in their free time. Status of all …

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## [CLC Update (March 2023)](https://discourse.haskell.org/t/clc-update-march-2023/5920)

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**Author:** [@ChShersh](https://discourse.haskell.org/u/ChShersh)\
**Replies:** 2\
**Last updated:** [March 6, 2023, 10:35am UTC](https://discourse.haskell.org/t/clc-update-march-2023/5920 "2023-03-06T10:35:00Z")

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I would like to start publishing monthly Core Libraries Committee (CLC) digests to increase transparency and visibility around CLC. This is my personal initiative but all other CLC members are welcome to join and publis…