[ANN] Cabal-3.12.0.0 released!

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HLS is prepared for cabal’s multi-repl feature. There are some small caveats, though:

  • HLS 2.8.0.0 (not available in ghcup yet, iirc) supports the multi-repl feature but doesn’t use it by default. You have to enable it by explicitly setting the LSP option "sessionLoading": "multiComponent". How you specify this option depends on your LSP client. The respective vscode-haskell release that adds support for this option is yet to happen, as we are bogged down by GitHub CI issues.

  • HLS 2.7.0.0 also supports the mutli-repl feature already, and will use it by default if cabal-install 3.12 is installed on your system and you load more than one component. In other words, you use the experimental multi-repl feature if you load a library and executable into the HLS session and cabal-install 3.12 is on the $PATH.

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