[GHC Proposals] GHC Maintainer preview

• ghc-proposals

  0 1 2.5 Python

  Proposed compiler and language changes for GHC and GHC/Haskell (by Kleidukos)

• ghc-proposals

  6 668 9.1 Python

  Proposed compiler and language changes for GHC and GHC/Haskell

  

  Discussion in GHC Proposals: https://github.com/ghc-proposals/ghc-proposals/pull/417

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• stackage

  2 518 9.9 Dockerfile

  Stable Haskell package sets: vetted consistent packages from Hackage

  

  On the contrary, I think this is standard practice for packages which are part of stackage. When stackage nightly switches to a new version of ghc, all the packages which are incompatible with the new ghc are dropped from nightly. My understanding is that maintainers are then expected to fix their packages, at which point more and more packages are included in the nightly snapshot. The next lts to include that version of ghc is only released later, once most packages have been added back, so unlike ghc users who diligently upgrade to the latest ghc, stackage users who diligently upgrade the latest lts snapshot shouldn't see a big drop in the number of compatible packages.

• typelevel-rewrite-rules

  0 61 3.0 Haskell

  rewrite rules for type-level equalities

  Until then, I guess we can simply poll. Here's a GitHub Action I wrote today which checks if the latest report for a given package includes a failure: https://github.com/gelisam/typelevel-rewrite-rules/blob/main/.github/workflows/check-hackage-matrix.yml

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