The Monad Transformer Library
mtl-2.3.1-rc1 (https://github.com/haskell/mtl/releases/tag/v2.3.1-rc1) is up on Github. We'll give this a 2 week window for issues relating to the changelog, and then do a release. Please review and upgrade if you're interested. Backported is also a migration doc for people interested in migrating to mtl-2.3. You can find it in the repo.
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2 projects | reddit.com/r/haskell | 31 Oct 2022
Confusion about StateT
1 project | reddit.com/r/haskell | 8 Aug 2022
Draft mtl-2.3 migration guide
3 projects | reddit.com/r/haskell | 5 Jul 2022
Application-managed call stacks, without polluting the business logic
2 projects | reddit.com/r/haskell | 22 Nov 2021
Tagless Final vs OOP (snippet)
1 project | reddit.com/r/scala | 20 Jan 2021