haskell-jp / random #103

GHC Users Guide 見ると GHC 9.6.1 から -Wloopy-superclass-solve って警告が増えたみたいですけど、実際に使おうとすると:thinking_face:
> cabal build
Resolving dependencies...
Build profile: -w ghc-9.6.1 -O1
In order, the following will be built (use -v for more details):
 - haskell-project-template-0.1.0.0 (lib) (configuration changed)
 - haskell-project-template-0.1.0.0 (exe:app) (configuration changed)
Configuring library for haskell-project-template-0.1.0.0..
Preprocessing library for haskell-project-template-0.1.0.0..
Building library for haskell-project-template-0.1.0.0..

on the commandline: error: [-Wunrecognised-warning-flags, Werror=unrecognised-warning-flags]
    unrecognised warning flag: -Wloopy-superclass-solve
Error: cabal-3.10.1.0.exe: Failed to build haskell-project-template-0.1.0.0
(which is required by exe:app from haskell-project-template-0.1.0.0).

https://downloads.haskell.org/ghc/latest/docs/users_guide/using-warnings.html#ghc-flag--Wloopy-superclass-solve
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Haskell Language Server 2.0.0.0 (変更点はあまり大きくなく、バージョン番号のルールを変更したことによるリリースらしい)
https://github.com/haskell/haskell-language-server/releases/tag/2.0.0.0
空のコレクションに対するanyとandの話、Haskell以外も含めて定期的に見かける気がします
https://twitter.com/graninas/status/1662050645166424074
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今週のHaskell Weeklyから。まだ執筆中のようですが、有用そう

Haskell Optimization Handbook
https://haskell.foundation/hs-opt-handbook.github.io/
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